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SonTek – a Xylem brand

FlowTracker2 User’s Manual (January 2019)

225

b) The velocity, V, represents the relative speed between source and receiver

(motion that changes the distance between the two).

i). If the distance between the two objects is decreasing, frequency increases.

ii). If the distance is increasing, frequency decreases.

iii). Motion perpendicular to the line connecting source and receiver does not

introduce a Doppler shift.

13.3. Bistatic Doppler Current Meters

Bistatic Doppler Operation

13.3.1

The FlowTracker2 is a Bistatic Doppler current meter with the 2D side looking probe
design and sampling volume shown in

Figure 13:1

a) Bistatic means separate acoustic transducers are used for transmitter and

receiver.

b) The transmitter generates sound concentrated in a narrow beam.

c) The receivers are sensitive to sound coming from a narrow beam.

d) The receivers are mounted such that the beams intersect at a volume of water

located a fixed distance (10 cm; 4 in) from the tip of the probe.

e) The beam intersection determines the location of the sampling volume (the

volume of water in which measurements are made).

The FlowTracker2 Measurement Principle

13.3.2

a) The transmitter generates a short pulse of sound at a known frequency.

b) The sound travels through the water along the transmitter beam axis.

c) As the pulse passes through the sampling volume, sound is reflected in all

directions by particulate matter (sediment, small organisms, bubbles).

d) Some portion of the reflected energy travels back along the receiver beam axes.

e) The reflected signal is sampled by the acoustic receivers.

f) The FlowTracker2 measures the change in frequency (Doppler shift) for each

receiver.

g) The Doppler shift is proportional to the velocity of the particles along the bistatic

axis of the receiver and transmitter. The bistatic axis is located halfway between
transmit and receive axes.

h) Knowing the relative orientation of the bistatic axes allows the FlowTracker2 to

calculate 2D or 3D water velocity.

Содержание SonTek FlowTracker2

Страница 1: ...no warranties with respect to this documentation and disclaims any implied war ranties of merchantability and fitness for a particular purpose Xylem shall not be liable for any errors or for incidental or consequential damages in connection with the furnishing performance or use of this manual or the examples herein The information in this document is subject to change without notice 9940 Summers ...

Страница 2: ...ed reproduced translated or reduced to any electronic medium or Machine readable form without prior consent in writing from Xylem Every effort has been made to ensure the accuracy of this manual However Xylem makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability and fitness for a particular purpose Xylem shall not be liable for any errors or...

Страница 3: ...e to the design nor does it cover any form of incidental damage as a result of errors in the measurements If your system is not functioning properly first try to identify the source of the problem If additional support is required we encourage you to contact us immediately and we will work to resolve the problem as quickly as possible If the system needs to be returned to the factory please contac...

Страница 4: ...ditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation The FlowTracker2 FCC license number can be found in two locations 1 on the shipping box label and 2 engraved on the back of the FlowTracker2 Examples of the shipping box label and engraving are shown below ...

Страница 5: ...ormation Main Menu 26 2 5 4 Measurement Main Menu 27 2 5 5 Data Files Main Menu 28 2 5 6 Device Configuration 30 Section 3 3 1 User Interface 30 Language 30 3 1 1 Use Beeper 31 3 1 2 Color Scheme 31 3 1 3 Font Size 32 3 1 4 3 2 Application Settings 32 Units 33 3 2 1 Wading Rod 33 3 2 2 File Naming 34 3 2 3 Folder Naming 35 3 2 4 GPS Station Tagging 36 3 2 5 Use Pressure Sensor Pressure Sensor 38 3...

Страница 6: ...3 4 4 1 Discharge Uncertainty 50 3 4 4 2 Discharge Reference 51 3 4 4 3 Max Station Q for Warning 51 3 4 4 4 Max Depth Change for Warning 51 3 4 4 5 Max Spacing Change for Warning 52 3 4 4 6 0 6 Method Depth 52 3 4 4 7 Displayed Velocity Methods 52 3 4 5 Utilities 54 Section 4 4 1 System Clock 54 Manual Change 54 4 1 1 Sync with GPS Time 55 4 1 2 4 2 Recorder 56 Manage Recorder 56 4 2 1 Erase Reco...

Страница 7: ...General Mode 82 Measurement Technique 82 5 2 1 Determining Mean Velocity 82 5 2 2 Quality Control 83 Section 6 6 1 Quality Control Parameters 83 Signal to Noise Ratio SNR 84 6 1 1 Velocity Standard Error 87 6 1 2 Boundary Interference 88 6 1 3 Velocity Spike Filter 90 6 1 4 Velocity Angle 91 6 1 5 Tilt Angle 93 6 1 6 Station Percent Discharge 93 6 1 7 Station Water Depth 94 6 1 8 Station Location ...

Страница 8: ...ment 117 Measurement 117 8 1 1 New File Type 117 8 1 2 New File Template 118 8 1 3 New Data File 118 8 1 4 8 2 Automated Beam Check 119 Start Automated Beam Check 120 8 2 1 Evaluate Beam Check Results 120 8 2 2 8 3 Data Collection 122 Data Collection Window 122 8 3 1 Add Station 123 8 3 1 1 Delete Station 123 8 3 1 2 Edit Station 124 8 3 1 3 Station Types 126 8 3 2 Bank left or right 127 8 3 2 1 I...

Страница 9: ...art Automated Beam Check 157 9 2 1 Evaluate Beam Check Results 157 9 2 2 9 3 Data Collection 159 Data Collection Window 159 9 3 1 Add Station 160 9 3 1 1 Delete Station 161 9 3 1 2 Station Measurement Wading Rod 161 9 3 2 Point Velocity Measurement 162 9 3 2 1 Review Point Measurement 164 9 3 2 2 Review Station Measurement 165 9 3 2 3 Station Measurement Pressure Sensor 166 9 3 3 Point Velocity Me...

Страница 10: ... 11 3 3 O rings 189 11 3 4 Housing 189 11 3 4 1 Battery Cap 189 11 3 4 2 Condensation in FlowTracker2 Housing 189 11 3 5 Zinc Anodes for Corrosion Protection 189 11 3 6 11 4 Seeding 190 Scattering Material 190 11 4 1 Field Applications 190 11 4 2 11 5 Troubleshooting 191 Cannot Turn System On 191 11 5 1 Cannot Communicate with the FlowTracker2 191 11 5 2 Handheld 191 11 5 2 1 Communication 191 11 ...

Страница 11: ...oking Probe Figure 30a 229 13 7 1 2D 3D Side Looking Probe Figure 30b 229 13 7 2 13 8 FlowTracker2 Data 230 Basic Sampling Strategy 230 13 8 1 Velocity Data 230 13 8 2 Accuracy of Velocity Data 230 13 8 3 Optimizing of FlowTracker2 230 13 8 3 1 Factors Influencing Accuracy 231 13 8 3 2 Quality Control Data 231 13 8 4 13 9 Special Considerations 231 Probe Configurations 231 13 9 1 Probe mounting 23...

Страница 12: ...clude these items in the file information 14 3 4 4 box 245 Include Charts and Tables Settings PDF Format Include these charts and tables 245 14 3 4 5 Include Information Boxes Settings PDF Format Include these information boxes on the 14 3 4 6 first page 245 14 4 Utilities 247 FlowTracker1 Import Utilities FlowTracker1 Import 247 14 4 1 Run Translator Utilities Run Translator 248 14 4 2 Import Lan...

Страница 13: ...lowTracker wad File Editing 276 14 9 1 2 Editing through the Settings Pane 277 14 9 2 Editing by Station 278 14 9 3 Editing Supplemental Data 281 14 9 4 14 10 Data Export and File Formats 281 Export Discharge Summary to PDF 281 14 10 1 Export Files to ASCII 283 14 10 2 Matlab Tools for JSON files 284 14 10 3 FlowTracker2 Lab ADV 285 Section 15 15 1 Lab ADV Software Feature 285 15 2 Enable Lab ADV ...

Страница 14: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 13 Appendix D Measurement Equipment List 302 Appendix E CE Declaration of Conformity 303 INDEX 305 ...

Страница 15: ...7 GPS Data Properties 66 Table 5 1 Predetermination of Measuring Intervals 74 Table 5 2 Determining Mean Station Velocity 76 Table 5 3 Correction Factors 78 Table 6 1 Quality Control Parameters 83 Table 6 2 SNR Data Types 85 Table 6 3 σV Data Types 87 Table 6 4 Quality Control Warning Messages 96 Table 6 5 Timing of Quality Control Warning Messages 98 Table 6 6 Automated Beam Check Quality Control...

Страница 16: ...mary 173 Table 9 9 Measurement Summary 177 Table 10 1 ADV Probe Specifications 179 Table 10 2 Handheld Specifications 180 Table 10 3 Cable and Connector Specifications 181 Table 12 1 CSV File Types 207 Table 12 2 CSV Row and Column 207 Table 12 3 Control File Variables 208 Table 12 4 Raw Data File Variables 209 Table 12 5 Discharge File Variables 209 Table 12 6 Summary File Variables 213 Table 13 ...

Страница 17: ...d 10m 74 Equation 5 4 Japanese Method 10m 74 Equation 5 5 Discharge Weighted 81 Equation 5 6 Time Weighted 81 Equation 13 1 Total Pressure 235 Equation 13 2 Dynamic Pressure 235 Equation 13 3 Corrected AdvWaterSpeed 235 Equation 13 4 Dynamic Pressure using AdvWaterSpeed 236 Equation 13 5 Static Pressure 236 Equation 13 6 Corrected Pressure 236 Equation 5 3 Japanese Method 10m 301 ...

Страница 18: ...ist of a water tight battery cap and an AA battery cartridge for quick access and battery replacement LCD Screen The LCD screen display the FlowTracker2 handheld software and real time graphical display of raw data Probe cable The probe is factory mounted to a 1500mm 59 in flexible cable The handheld connects to the probe cable with rugged underwater flexible connector The standard cable 1500mm su...

Страница 19: ... acoustic receivers for 2D or 3D probes See Beam Geometry and 3D Velocity Measurements for details Sampling volume The sampling volume is the physical location of the water velocity measurement See Principle of Operations for details Temperature sensor The temperature sensor is mounted inside the probe Temperature data is used to compensate for changes in sound speed Sound speed is used to convert...

Страница 20: ... spikes filtered from data and velocity angle For details about quality control data see Quality Control for details Salinity Water salinity is a user supplied value that is used for sound speed calculations Note If using the system in salt water a zinc anode should be installed on the probe for corrosion protection described in Zinc Anodes for Corrosion Protection Sample A sample refers to the me...

Страница 21: ...19 20 Temperature Water temperature in C is measured by the internal temperature sensor Temperature is used for sound speed calculations UTC Coordinated Universal Time abbreviated as UTC is the primary time standard by which the world regulates clocks and time ...

Страница 22: ... not used or stored for long periods remove the batteries to prevent unnecessary draining and potential battery leakage 2 2 Keypad a Navigation Keys The handheld has a number of keys that are assigned to operate handheld software The following keys are available for the user to either navigate or select options in the software i Left Soft Key The text directly above the soft key is associated with...

Страница 23: ... and will not be stored in the data files c Numbers 0 9 The keys allows the user to perform the following actions Numbers will default to the first option on the key if only numerical values are required in the entry field i Menu shortcut number next to text associated with each menu item ii Configuration of instrument such data collection settings quality control parameters and discharge settings...

Страница 24: ...2 key one time 2 A B C text fields it assumes letters first i e for B press 2 key two times A B C 2 3 Keypad Filter The FlowTracker2 handheld keypad filter enables the user to filter data or template files based on the keystrokes entered on the handheld This feature is available to all tables with row selection functionality rows that can be selected by using either the up or down arrows keys such...

Страница 25: ...s The options or information displayed may vary from one screen to the next based on the software features that are used Instrument Time FlowTracker2 Label GPS Top banner Software window of operation Left Soft Key Figure 2 4 Screen Layout Battery Level Selection yellow Right Soft Key Bottom banner 2 5 Main Menu When the FlowTracker2 handheld is switched on the FlowTracker2 image is displayed durin...

Страница 26: ...ress the Right Soft Key The number opposite each menu option is a shortcut key i e pressing 2 key will access the Utilities menu Device Configuration Menu Main Menu 2 5 1 The Device Configuration Menu configures how the FlowTracker2 collects data performs internal discharge calculations evaluate data against data quality parameters and finally determine uncertainty of the measurements based on the...

Страница 27: ...oft Key Figure 2 7 Utilities Menu The Utilities Menu provides access to functions that should be checked periodically but do not directly affect how data is collected Communication Main Menu 2 5 3 The Communication function permits communication between an external device equipped with the FlowTracker2 Desktop Software and the handheld Communication between the desktop software and handheld can be...

Страница 28: ... is the main component of the FlowTracker2 handheld software and includes two measurement modes The Discharge mode is for applications where the primary goal is to measure river stream discharge The technique involves taking a series of velocity measurements at different locations throughout the cross section These measurements are combined with location and water depth information to compute the ...

Страница 29: ...on the following user defined folder naming conventions Site Name Site Number Month Data Files screen displays a list of folders based on the naming convention Each folder can consist of either a single or multiple measurement files a To select a measurement folder i Use up or down scroll arrows keys to select folder ii The folder will be highlighted in yellow iii Press the enter key to access the...

Страница 30: ...ed Download all measurement files using the FlowTracker2 desktop software Ensure that measurement files are stored in a secure location on PC or Tablet Create a secondary backup of the measurement files by copying to external USB or network drive The delete process is irreversible and the user will not able to retrieve the measurement files once this action is performed ...

Страница 31: ...ing a Default language English US b Other Chinese Simplified Chinese Traditional French German Italian Japanese Korean Portuguese Russian Spanish and Catalan c More languages will be added to FlowTracker2 in subsequent revisions as SonTek receives translation files Please contact SonTek if you use the FlowTracker2 desktop software translator tool to create translation files you wish to share d To ...

Страница 32: ...er b Table 3 1 list the Beeper options and functions that will create a beep during operations Table 3 1 Beeper Options Option Function Always Major Events On startup Maximum screen brightness Measurement completed in point measurement view Tilt exceeds threshold in point measurement Automated BeamCheck completed Warning present in Report c To change the Beeper option i Use the left or right arrow...

Страница 33: ...es ii Press the Left Soft Key to return to Configuration for the software to accept the change 3 2 Application Settings Application Settings define the operator requirements with respect to the units system used management of measurement files and overall GPS operation during data collection Application Settings screen includes following parameters a Units b Wading Rod c File Naming d Folder Namin...

Страница 34: ... dbar Velocity ft s m s Standard error of velocity ft s m s Staff Gauge height feet meters Discharge ft3 s m3 s SNR dB dB d To change the Unit option i Use the left or right arrow key to scroll through the list of options ii Press the Left Soft Key to return to Configuration for the software to accept the change Wading Rod 3 2 2 Wading Rod function gives the operator the choice of what type of wad...

Страница 35: ...h wdepth Water Depth wdepth 0 783m fdepth 0 6 Rod 0 313 Channel Bed Ice 𝑤𝑑𝑑𝑑𝑑ℎ 𝑤𝑑𝑑𝑑𝑑ℎ 𝑤depth ice 1 𝑓𝑑𝑑𝑑𝑑ℎ fdepth Fractional Depth wdepth Water Depth Ithickness Ice Thickness wdepth ice Water Surface to Bottom of Ice wdepth 0 783m fdepth 0 5 Ithickness 0 2m wdepth ice 0 1m Rod 0 442 Water Surface c To change the Wading Rod type i Use the left or right arrow key to scroll through the list of options...

Страница 36: ...Naming convention i Use the left or right arrow key to scroll through the list of options ii Press the Left Soft Key to return to Configuration for the software to accept the change It s recommended that file the naming convention used contains both the date and time This will ensure that an unique file name is created for each measurement and can easily be sorted in Windows explorer when download...

Страница 37: ...tware starts averaging the positional information when the Add Station function is selected and stops when the station is completed from where the averaged position is recorded against the station The averaging process is performed for both Discharge and General modes When editing an existing station and Automatic GPS mode is selected the logic reverts to Manual GPS mode to ensure that a position ...

Страница 38: ...s defined in Table 3 5 Table 3 5 GPS Status Icons Icon Description Conditions Attempting to acquire satellite signal GPS has not acquired any satellite signal or GPS lock and is unable to determine positional information Acquiring satellite signal in progress GPS is acquiring additional satellite signals low quality positional information available number of satellites 4 and or HDOP 2 5 Satellite ...

Страница 39: ...robe and the wading rod base plate in the depth measurements Figure 3 4 Probe Offset From WR Bottom It s recommended that the offset selected should exceed the average size of obstacles on the channel bed If a two point method is performed during a measurement it is recommended that the offset should be equal to the average of all the 0 8 measurements to reduce adjustment time The user can make us...

Страница 40: ...FlowTracker2 User s Manual January 2019 39 Parameter Min Max Default Units Required Period If the period between calibrations is too long the change in atmospheric pressure can impact the accuracy of the depth measurements ...

Страница 41: ... that a unique template is created for each monitoring site The advantage of this is twofold operator does not have to enter in the site number and name for every measurement and ensure that site number and name is consistent Managing Templates 3 3 2 Accessing Templates 3 3 2 1 Templates are stored separately from the measurement files on the internal memory of the FlowTracker2 handheld and are ma...

Страница 42: ...fined The template name can be up to 50 characters long b Base Template defines the default configuration used for new template The user has the option to select the default SonTek configuration or from existing user configurations c To accept new Template i Press the Right Soft Key ii The software will return to template screen d To CANCEL new Template i Press the Left Soft Key Figure 3 7 New Tem...

Страница 43: ...e e Displayed Velocity Methods only for discharge mode f To select a menu option i Use up or down scroll arrows keys to select menu option ii The menu option selected will be highlighted in yellow iii Press the enter key to access the menu option g To navigate to Template Screen i Press the Left Soft Key h To Rename or DELETE a Template in Menu i Press the Right Soft Key ii To select menu option u...

Страница 44: ...operties Properties Parameter Description Field Size Default Required Site Number Enter unique site number e g Hydrometric Station Number 50 Number keypad No Site Name Enter unique site name e g Hydrometric Station Name 50 Alphabet keypad No Operator Operator name can be entered in this field e g Bees Blaas 50 Alphabet keypad No Data Collection Settings 3 4 2 The Data Collection Settings function ...

Страница 45: ... ii Type in the new value using the keypad The averaging time required for single point velocity measurement is usually from 40 to 60 seconds This however is site dependent and longer averaging times are required when measuring in turbulent flow conditions Salinity 3 4 2 2 The Salinity parameter specifies the salinity value in Practical Salinity Scale dimensionless used to compute sound speed a Sa...

Страница 46: ... temperature value used to compute sound speed is based on internal temperature sensor by default The temperature field will be populated with the value Measured to indicate it is based on internal temperature sensor b Water temperature measured by external devices can be entered in the temperature field The temperature value from the external sensor will then be used for sound speed calculations ...

Страница 47: ... velocity data d Enter external Sound Speed reading i If the default value Calculated is displayed start typing using keypad otherwise ii Use the backspace key to clear current entry iii Type in the new value using the keypad Mounting Correction 3 4 2 5 The Mounting Correction parameter specifies how to account for the device used to hold the FlowTracker2 in the water The type of mount may have a ...

Страница 48: ... 0 50 10 dB Yes Std Error Threshold 0 001 0 25 0 01 m s or ft s Yes Spike Threshold 0 01 50 10 Yes Velocity Angle for Warning 0 1 90 20 degrees Yes Tilt Angle Warning 0 1 5 5 degrees Yes SNR Threshold 3 4 3 1 The SNR Threshold parameter is a minimum threshold placed on the SNR variable during real time data collection a SNR is primarily a function of the amount of particulate matter in the water F...

Страница 49: ...ler velocity sensor such as the FlowTracker Spikes may have a variety of causes large particles air bubbles or acoustic anomalies b The default Spike Threshold applied in FlowTracker2 is 10 c To change the Spikes Threshold i Use the backspace key to clear current entry ii Type in the new value using the keypad d To DISABLE the Spikes Threshold i Use the backspace key to clear current entry until D...

Страница 50: ...ations discharge uncertainty analysis and quality control process Discharge settings function is only applicable to the Discharge Mode The General Mode does not contain any discharge calculation or uncertainty analysis Discharge Settings screen includes the following parameters a Discharge Equation b Discharge Uncertainty c Discharge Reference d Max Station Q for Warning e Max Depth Change for War...

Страница 51: ...easurement of liquid flow in open channels using current meters or floats WMO No 1044 Volume I Fieldwork 2010 Japanese Literature c To change the Discharge Equation method i Use the left or right arrow key to scroll through the list of options Discharge Uncertainty 3 4 4 2 The Discharge Uncertainty parameter allows the user to specify what type of uncertainty analysis must be applied in the discha...

Страница 52: ...s Max Station Q for Warning 3 4 4 4 The Max Station Q for Warning parameter is the maximum threshold placed on station discharge a Station discharge less than 5 of the total discharge is ideal between 5 10 indicates that an additional station is required in the specific location larger than 10 is not recommended b The default Max Station Q for Warning applied in FlowTracker2 is 10 c To change the ...

Страница 53: ...ange for Warning i Use the backspace key to clear current entry until Disabled is displayed 0 6 Method Depth 3 4 4 7 The 0 6 Method Depth parameter is the threshold placed on the application of the six tenths velocity method a The six tenths velocity method is set as default method in the software when the measured depth is below the threshold specified b Different velocity method can be selected ...

Страница 54: ...e Velocity Methods specifies how the FlowTracker2 determines mean station velocity at each station See Determining Mean Station Velocity for details on the Discharge Velocity Methods Properties associated with the parameters in displayed velocity methods are defined in Table 3 11 Table 3 11 Displayed Velocity Methods Properties Discharge Velocity Method Default Display Required 0 2 0 8 0 6 Methods...

Страница 55: ...ter key to select the parameter highlighted in yellow e To navigate to Utilities menu i Press the Left Soft Key Figure 4 1 System Clock The System Clock options implemented to set the internal data and time of the FlowTracker2 handheld are the following Manual Change Sync with GPS Time Setting the correct date and time in the FlowTracker2 handheld is important to ensure that the correct metadata a...

Страница 56: ...es associated with the date and time parameters for manual Change option are defined in Table 4 1 Table 4 1 Date and Time Properties Parameter Format Separator Example Date yyyy mm dd 2015 10 22 Time hh mm ss 19 11 22 Offset From UTC hh mm 00 15 Sync with GPS Time 4 1 2 Sync with GPS Time option synchronizes the internal date and time of the FlowTracker2 handheld to GPS date and time When synchron...

Страница 57: ...ndheld The available memory of the internal recorder is dependent on the type number and size of the files stored a The following information is displayed on the Recorder screen i Pie chart showing percentage of free and used recorder space ii Free Space in Megabytes MB iii Used Space in Megabytes MB b The size of the internal recorder is 2000MB c To ERASE internal recorder i Press the Right Soft ...

Страница 58: ...e keeping of measurement files discarding unwanted measurement files available recorder space removing hidden or corrupt files The internal recorder should not be used as the main storage device for safe keeping of measurement files It is recommended that measurements are downloaded by the end of each day and a copy of the measurement files are stored on either a computer or USB flash drive Erase ...

Страница 59: ...nt is started The Battery Data screen includes the following parameters a Battery Type b Battery Voltage c Percentage Full d To change the Battery Type i Use the left or right arrow key to scroll through the list of available offsets e To navigate to Utilities menu i Press the Left Soft Key Figure 4 6 Battery Data Battery Type 4 3 1 The Battery Type parameter specifies the type of battery used wit...

Страница 60: ...oltage and capacity always check battery voltage after the system has acclimated to outside temperatures Battery manufacturer guidelines must be followed during normal use long term storage and charging requirements The disposal of batteries must be done with care and it is recommended that local authority guidelines be used Battery Voltage 4 3 2 The Battery Voltage displayed is the current batter...

Страница 61: ...l velocity components of the one second measured raw velocity data a Velocity data can be expected to show notable variations most of which are real and should be indicative of the general conditions in the water b The raw velocity data are updated once per second c The FlowTracker2 Probe Coordinate System is outlined in Figure 4 8 Figure 4 8 FlowTracker2 Coordinate System d The velocity component...

Страница 62: ...Z Velocity The positive Z axis is defined as vertically up in the direction of the probe s stem Green All Velocities All of the above Red Blue Green e The continuous lines displayed in the graphics are defined under the following categories i Thin continuous line represents the one second raw velocity data ii Thick continuous line represents moving average of the one second raw velocity data f The...

Страница 63: ...1 Beam2 SNR2 Blue 2 Beam3 SNR3 Green 3 All Beams All SNR All 4 d The continuous lines displayed in the graphics are defined under the following categories i Thin continuous line represents the one second raw SNR data ii Thick continuous line represents moving average of the one second raw SNR data e The SNR values displayed in the rectangular boxes for each beam below the graphical display are def...

Страница 64: ...ne NiMH General description Single use Rechargeable Nominal battery capacity typical 1500 mAh 1900mAh New battery voltage 12V 11V Drained battery voltage 8V 9V When the remaining capacity of the battery reaches 0 the FlowTracker2 handheld will supply the following message Battery level critically low shutting down The user will be required to replace the batteries before continuing with operations...

Страница 65: ...e placed in the region of the measurement section in moving water such that the probe is submerged and well away from any underwater obstacles b The FlowTracker2 collects data for about 20 seconds Figure 4 9 Automated Beam Check c The graphical display of the Quality Control parameters supplied during the Automated BeamCheck is time series of each parameter d The display options for individual or ...

Страница 66: ...re a The Beam Check function can be accessed from the Utilities menu b Beam Check file will be recorded in the handheld recorder for each Beam Check performed The file naming convention for beam check files consists of the following i File Extension ft_beamcheck ii Naming Convention yyyymmdd hhmmss c The maximum number of samples that can be recorded during a Beam Check is 30 Figure 4 10 Beam Chec...

Страница 67: ...h mm ss Satellite Date UTC Current satellite date based on Coordinated Universal Time UTC yyyy mm dd Satellite Time UTC Current satellite time based on Coordinated Universal Time UTC hh mm ss Satellites Number of satellites in view of GPS receiver in the FlowTracker2 handheld n a Fix Quality GPS Quality indicator 0 no fix 1 GPS fix 2 Dif GPS fix n a Latitude GPS derived Latitude DDD MM SS SS Longi...

Страница 68: ...eft Soft Key Figure 4 12 Pressure Sensor 4 9 System Maintenance System Maintenance function enables the user to perform number of maintenance tasks on the FlowTracker2 handled and probe firmware System Maintenance screen includes the following functions a Force Probe Upgrade b To select a variable i Use up or down scroll arrows keys to view a variable c To navigate to Utilities menu i Press the Le...

Страница 69: ...eft Soft Key b To continue with force probe upgrade i Press the Right Soft Key Figure 4 14 Force Probe Upgrade Warning In case where the probe firmware version is newer than the firmware installed on the handheld the handheld will supply a warning message before each velocity measurement is performed The Probe firmware is newer than expected please consider upgrading the Handheld firmware to the l...

Страница 70: ...ia stipulated in Site Selection Requirements The site selection process is a crucial part of collecting discharge measurement data i Ideal measurement site the flow should be perpendicular to the tag line at all points with no flow reversals or obstructions ii The measurement site should encompass the minimum measurement site and hydraulic requirements discussed in Site Selection Requirements iii ...

Страница 71: ...charge The methods implemented for calculation of discharge are based on the following literature ISO 748 2007 Hydrometry Measurement of liquid flow in open channels using current meters or floats WMO No 1044 Volume I Fieldwork 2010 Japanese Literature The FlowTracker2 supports several discharge calculating methods for calculating discharge following the basic measuring technique outlined above Mi...

Страница 72: ...ally shown in Figure 5 2 The principle of the Mid Section method is highlighted in the figure below where the panel width W2 is calculated based on the station locations L2 with the station as the center of the panel Figure 5 2 Mid Section Method There are few special cases to consider when applying the Mid Section method in calculating of total discharge a Edges i Edge can be either the Left Bank...

Страница 73: ...o number of stations with panels created in between adjacent stations across the section The average velocity of a panel is assumed to be the average velocity of the two adjacent stations velocities in the vertical calculated from point velocity measurements made The equation of the Mean Section method is given in Equation 5 2 Equation 5 2 Mean Section Method 𝑄 𝑏1 𝑏0 𝑑1 𝑑0 2 𝑣1 𝑣0 2 𝑏2 𝑏1 𝑑2 𝑑1 2 ...

Страница 74: ...at the velocity at the edges is zero b Islands multiple channels i If a river is split into multiple channels any internal island s must be accounted for in the discharge calculation ii The stations at each edge of the island s are treated as an Island Edge iii Island edge calculations are handled the same as 73 with reference to the first component of Equation 5 2 iv Correction factor CF is NOT a...

Страница 75: ...200 10 20 200 over 15 30 The Japanese method has two separate equations for determining the total discharge based on the measurement section width The equation of the Japanese method for measurement section greater than 10m is given in Equation 5 3 Equation 5 3 Japanese Method 10m 𝑄 𝑏1 𝑏0 0 5 𝑑1 𝑑1 2 𝑑0 𝑑0 2 𝑏2 𝑏1 0 5 𝑑2 𝑑2 2 𝑑1 𝑑1 2 𝑣1 𝑣1 2 Edge 𝑏𝑛 𝑏𝑛 1 0 5 𝑑𝑛 𝑑𝑛 2 𝑑𝑛 1 𝑑𝑛 1 2 𝑏𝑛 1 𝑏𝑛 0 5 𝑑𝑛 1 𝑑𝑛...

Страница 76: ...ale the mean velocity at the edges from the adjacent station b Islands multiple channels i If a river is split into multiple channels any internal island s must be accounted for in the discharge calculation ii The stations at each edge of the island s are treated as an Island Edge iii Island edge calculations are handled the same as 75 with reference to the first component of Equation 5 3 iv Corre...

Страница 77: ...8 6 2 0 2 depth 0 6 depth 0 8 depth Vmean CF V0 2 2 V0 6 V0 8 4 Ice 0 6 0 6 effective depth Vmean 0 92 V0 6 Correction Factor 0 92 can be changed by user Ice 0 5 0 5 effective depth Vmean 0 88 V0 5 Correction Factor 0 88 can be changed by user Ice 2 8 Ice 8 2 0 2 effective depth 0 8 effective depth Vmean CF V0 2 V0 8 2 Kreps 2 Kreps 2 0 0 near surface 0 62 depth Vmean CF 0 31 V0 0 0 634 V0 62 5 Po...

Страница 78: ...dges describing the left or Right bank of a channel ii Island Edges describing the banks of island s iii The method None is assigned automatically for Edges and Island Edges by the software b Station Measurement not Possible i The measuring site conditions do not allow velocity measurement perhaps due to weed growth ii Velocity for this station is based on the mean station velocity from the adjace...

Страница 79: ...1 3 3 The Correction Factor CF is a user supplied parameter used to scale the mean station velocity or velocity in the vertical Be careful when selecting a Correction Factor as the mean station velocity is always scaled by this value Incorrect use of this parameter will affect the final discharge measurement a The CF is commonly used at edges internal islands and other method None stations to scal...

Страница 80: ...gical Survey The IVE uncertainty calculation is the default method as it provides the most reliable indicator of measurement quality ii The ISO method is based on the international standard It provides users with the results of a published standard technique however in some cases this calculation may not provide a reliable indicator of data quality The uncertainty analysis implemented for determin...

Страница 81: ...h Estimated uncertainty in width measurements v Method Determining Mean Station Velocity Use for the ISO method only vi Number of stations Use for the ISO method only Under Ice Measurements 5 1 5 The discharge calculation methods discussed previously in this section are also applicable for Under Ice Measurements It is recommended that the operator refer to existing literature describing under ice ...

Страница 82: ...e The methods implemented in FlowTracker2 for determining the weighted gauge height during a discharge measurement is the average of both the Discharge Weighted and Time Weighted gauge height a The discharge weighted process is based on the discharge calculated within the time interval associated with each set of gauge height readings The equation of the discharge weighted method is given in Equat...

Страница 83: ...e differs from the Discharge Mode where the objective is to determine water velocity at specific locations a The measurement location is not required to comply with any measurement site or hydraulic requirements stipulated in Site Selection Requirements b The flow conditions at the measurement location should be within the FlowTracker2 specifications c Station is created for each point velocity me...

Страница 84: ...from particles in the water Without sufficient SNR the FlowTracker2 cannot measure velocity Ideally 10 dB Minimum 4 dB Velocity Standard Error σV velocity standard error is a direct measure of the accuracy of velocity data It includes the effects of turbulence in the river and instrument uncertainty Typically 0 01m s 0 03 ft s Higher in turbulent environment Boundary Interference Boundary QC evalu...

Страница 85: ...is complied with Ideally near surface velocity n Velocity Signal to Noise Ratio SNR 6 1 1 Signal to Noise Ratio SNR is a measure of the strength of the reflected acoustic signal relative to the ambient noise level of the FlowTracker2 SNR is the most important quality control data provided by the FlowTracker2 a SNR is reported in logarithmic units dB It is recorded with each one second velocity sam...

Страница 86: ... measurements at a station Discharge Summary Mean Section SNR The discharge summary SNR is the mean of all the station mean SNR within the section General Review Point Measurement Mean Beam SNR at Point Measurement The point measurement SNR is the mean of one second SNR data for each individual beam 2 or 3 depending on probe type at the point measurement Review Station Mean Beam SNR at Station The...

Страница 87: ... of each beam during the measurement is greater than a fixed threshold of 5 dB This may indicate interference from an underwater obstacle a highly turbulent environment or highly aerated water At the first alert repeat the measurement perhaps after moving probe location If the problem persists evaluate the measurement environment In some cases large variations may be unavoidable and may not impact...

Страница 88: ...ns σV Data Display d The σV displayed after a point velocity measurement station and or stations are completed in both General and Discharge Modes are supplied in Table 6 3 Table 6 3 σV Data Types Mode Reporting Type Description Discharge Review Point Measurement σV Point Measurement X component velocity standard error Review Station Mean Station σV The station σV is the mean of the X component ve...

Страница 89: ...riations may be unavoidable e g in highly turbulent waters iii σV Threshold is checked with the completion of a point velocity measurement and measurement section see Timing of Warning Messages User is notified of any stations that exceed the above criteria If desired user can delete suspect stations and repeat the measurements f If the point measurements X component velocity standard error is 0 o...

Страница 90: ...Interference check looks for interference with underwater objects that are in or close to the FlowTracker2 sampling volume The FlowTracker2 automatically adapts its pinging to minimize boundary interference but it can only adapt so much and the resulting pings could still be influenced by the boundary The FlowTracker2 software receives two values from the firmware to use in determining the amount ...

Страница 91: ...t is calculated ii The FlowTracker2 determines the 1st Quartile Q1 velocity value where 25 of the samples are less than this value The 3rd Quartile Q3 is the velocity value where 75 of the samples are smaller than this value The Interquartile Range IQR is defined as the spread between the 1st Quartile and the 3rd Quartile IQR Q3 Q1 iii If the IQR is less than 0 015 m s IQR is set to 0 015 m s iv A...

Страница 92: ... the number of velocity spikes is larger than allowed by the Spike Threshold then give the High Spikes warning h The velocity spike filter check is re run Discharge mode and General mode measurement to ensure the warnings are set with the most current data f This criterion can be adjusted or disabled under Quality Control Settings Velocity Angle 6 1 5 The Velocity Angle quality control parameter i...

Страница 93: ...ured angle is reasonable Consider repeating the measurement if the angle does not appear reasonable perhaps after moving probe location For large velocity angles consider moving the measurement site iii The Max Angle is checked with the completion of a point velocity measurement and measurement section see Timing of Warning Messages User is notified of any stations that exceed the above criteria I...

Страница 94: ...asurement and measurement section see Timing of Warning Messages User is notified of any point velocity measurement that exceeds the above criteria If desired user can go back and delete suspect point velocity measurement and repeat the measurements d The tilt angle is checked at the end of every point velocity measurement and if the wading rod angle Max Wading Rod Angle then give the Velocity Ang...

Страница 95: ... 8 The Max Depth Change criterion default 50 is intended to avoid data entry errors a It is assumed that depth changes between stations will be gradual Max Depth Evaluate b If the entered depth is different from a reference by more than Max Depth Change and at least 0 20 m 0 66 ft an alert is issued to be sure the depth was not incorrectly entered i If only the previous station is available the ne...

Страница 96: ...hen give the Station Order warning Collecting an out of order station is allowed However when an out of order station is entered we verify the location value since the station is sorted into the correct place within the stream iii Any time a station location is changed the location is compared to the starting edge location If the new location is outside the starting edge a Location Outside Edge wa...

Страница 97: ...ng Messages Types of Warning Messages 6 2 1 Quality Control Warning Message is supplied when measured variable exceeds the expected criteria of each parameter in Quality Control Parameters The quality control warning messages implemented in the Quality Control process are supplied in Table 6 4 The table layout describing the quality control warning messages consist of the following key components ...

Страница 98: ...ns e g aerated water Repeat measurement Velocity Angle QC Point Velocity Max Velocity Angle Angle Max Velocity Angle May only indicate non ideal measurement environment Consider if measured angle is realistic Repeat measurement if needed Rod Angle QC Point Velocity Max Wading Rod Angle Angle Max Wading Rod Angle May indicate non ideal measurement method Consider if measured angle is realistic Repe...

Страница 99: ...Warning Messages Station Setup Pre Measurement Post Measurement Post Station Post Section Low SNR D G D G Approach Low SNR D G D G Beam SNRs Not Similar D G D G Large SNR Variation D G D G SNR Threshold Variation D G D G Standard Error QC D G D G Boundary Interference D G High Spikes D G D G Velocity Angle QC D D Rod Angle QC D G D G High Stn Discharge D D Water Depth QC D D Stn Spacing QC D Stati...

Страница 100: ...rresponds to the transmit pulse passing through the focal point of the receivers ii The peak of this curve corresponds to the center of the sampling volume iii The location of the sampling volume varies from probe to probe but is typically 10 12 cm iv All receivers 2 or 3 should see the peak in the same location although there will be variation in the height and shape of the curve e A sharp spike ...

Страница 101: ...al time or previously recorded archived data is being displayed only the current sample number is displayed Sample Averaged When Averaging has been selected this box indicates the number of samples that have been averaged together for the currently displayed graph and tabular data Noise Level Shows the electronics noise level for the receiver of each beam This value is determined by the signal to ...

Страница 102: ...d test Diagnosing Measurements with Beam Check 6 3 4 Beam Check function can be used to detect measurement conditions and or hardware related issues that can affect the measurement accuracy and precision Low Scattering Strength 6 3 4 1 Lack of scattering material in the water normally encountered during measurements at springs or under ice will result in a small or non existing sampling volume pea...

Страница 103: ...thin 50cm from the FlowTracker2 transducer the boundary will be detected by FlowTracker2 when performing a Beam Check see Figure 6 6 The boundary was detected about 40cm away from the transducer Figure 6 6 Boundary Detected 40cm The Beam Check supplied in Figure 6 7 indicates that boundary was detected at 30cm away from the transducer Figure 6 7 Boundary Detected 30cm ...

Страница 104: ...his can be achieved by performing a manual Beam Check or Automated Beam Check Boundary in Sampling Volume 6 3 4 4 Boundary in Sampling Volume occurs when the boundary is located at the same position from the transducer than the sampling volume There are number of unique features shown in Figure 6 9 that can be used to identify if boundary is located within the sampling volume a The SNR of the peak...

Страница 105: ...merged and well away from any underwater obstacles i The FlowTracker2 collects data until It has 20 diagnostic samples not time based ii The beam data are analyzed on several criteria outlined in Table 6 6 b The automated beam check quality control criteria used in the evaluation of the beam check data are listed in Table 6 6 Table 6 6 Automated Beam Check Quality Control Criteria Quality Control ...

Страница 106: ...ical display of the Quality Control parameters supplied during the Automated BeamCheck is time series of each parameter If there are any significant variation between the beams spikes are present in the data or Quality Control warnings are issued we recommend the following steps i Repeat the test at least once after you verify that the probe and sampling volume are well away from any underwater ob...

Страница 107: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 106 ...

Страница 108: ...e performed to confirm the condition and operation of the equipment and accessories before departure for field measurements The verification of instruments and accessories before leaving the office is normally neglected It is highly recommended that instrumentation are inspected and tested before each field measurement exercise Equipment List 7 1 1 Equipment List is an essential part in the planni...

Страница 109: ... instrument if required The software registers the serial number of probe and handheld with each point velocity measurement Table 7 1 Hardware Inspection Component Inspection Handheld Inspect the handheld for any external damage to the housing LCD screen and keypad Battery cap and O ring Connectors of battery cartridge USB port Probe Mounting between receiver arms and probe body Scratched transduc...

Страница 110: ...s that are evaluated during the diagnostic tests are listed in Table 7 2 Table 7 2 Office Diagnostics Function Variable Verification System Clock Date Time UTM Offset System Clock function show the current internal time of the FlowTracker2 instrument Verify if the internal system clock date and time is correctly set and adjust if required Recorder Memory Available The Recorder function indicates t...

Страница 111: ...Variable Description Unique Field Site Number Site number allocated to measurement site Most organizations use a unique number system e g associated with catchment File Properties Site Name Site name allocated for measuring site Most organizations use a unique naming convention e g combination of river and place name File Properties Operator Operator that performed the measurement File Properties ...

Страница 112: ...e and Time is essential Metadata in the processing and application of measurement results Recorder Verify if the available memory is sufficient for performing a measurement Insufficient memory on the recorder could affect the measurement operation and or recording of measurement file Battery Data Evaluate the battery voltage and capacity based on the battery type selected Insufficient power supply...

Страница 113: ...stacles e A graduated tagline or measuring tape should be spanned across the measurement section to determine the station location The graduated tagline or measuring tape should be perpendicular to the main flow direction and channel orientation f Staff gauge readings with time should be taken at the start the discharge measurement If the discharge measurement is over extended period or at a measu...

Страница 114: ...ts should reflect the flow conditions at the measurement site o Review the instrument configuration during the measurement especially the quality control parameters and adjust if required p Automated Beam Check can be performed during any stage of the measurement to verify the probe performance and measurement conditions q Comments can be entered at each station or at the end of the discharge meas...

Страница 115: ...t is recommended to repeat a point velocity or station measurement if any of the data collected during a measurement are not consistent with the flow conditions present a Point velocity measurements with regard to mean velocity standard error and quality control reports correspond within a station measurement and adjacent stations b Station measurements with regard to location depth mean velocity ...

Страница 116: ...e keeping of measurement files It is good data management practice to download the measurement files at least once per day Storage 7 5 4 Storage guidelines of FlowTracker2 instrument and accessories are essential to ensure the safe keeping of the instrument during transport or storage at the office The FlowTracker2 instrument is supplied in a pelican case with foam inserts designed to house each i...

Страница 117: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 116 ...

Страница 118: ...eps before the data collection can be performed The first step involved is to either select an existing Configuration Template or create a new template with user defined configuration parameters The template then needs to be associated with a measurement file that is created by the user When the measurement file is created the software is ready for data collection Measurement 8 1 1 The Measurement...

Страница 119: ...itions and organizational requirements The configuration template selected will be assigned to the measurement file and the parameters defined in the template will be applied during the Discharge measurement The New File Template screen consists of the following options a default the template will be based on SonTek default settings b Configuration Templates created under Device Configuration A li...

Страница 120: ...se up or down scroll arrows keys to select a parameter f To accept the new data file configuration i Press the Right Soft Key ii The software will navigate to Automated Beam Check screen g To CANCEL new data file configuration i Press the Left Soft Key ii The software will return to New File Template Figure 8 4 New Data File 8 2 Automated Beam Check Duplicate of 6 4 Automated Beam Check The Automa...

Страница 121: ...tart the automated beam check i Press the Left Soft Key b To CANCEL automated beam check i Press the Right Soft Key ii The software will navigate to Data Collection window c To accept Automated Beam Check i Press the Right Soft Key ii The software will navigate to the Data Collection window Figure 8 5 Automated Beam Check Evaluate Beam Check Results 8 2 2 The automated beam check quality control c...

Страница 122: ...terion can only be checked for sufficient SNR 7 dB Peak Location QC Temperature No criteria defined for Temperature Temperature data included in Automated BeamCheck to allow user to analyze data before measurement None a The graphical display of the Quality Control parameters supplied during the Automated BeamCheck is time series of each parameter If there are any significant variation between the...

Страница 123: ...ess consist of the following main components that also describes each individual aspect of the field measurement Data Collection Window Station Types Station Measurement Data Collection Menu Data Collection Window 8 3 1 The Data Collection Window can be defined as the control center of the data collection process during a discharge measurement All the software functions required to perform a disch...

Страница 124: ...surement section based on the station types defined for Discharge Measurement technique The parameters required for creating a station is defined by the station type as discussed under Station Types There are several common parameters that are applicable to all station types of which are listed below Add Station screen consist of the following common parameters that are required for all station ty...

Страница 125: ...ld software a To confirm station delete i Press the Right Soft Key b To CANCEL station delete i Press the Left Soft Key c The software will navigate to the Data Collection Window Figure 8 10 Confirm Delete Edit Station 8 3 1 3 Editing the station parameters can be performed from the Data Collection Window by selecting the station within the viewable window The station editing process allows the us...

Страница 126: ...g is performed a To EDIT station i Press the Left Soft Key b To close review station or CANCEL edit station i Press the Right Soft Key Figure 8 12 Review Station Step 3 Edit Station screen allows the user to change parameters during the original configuration The Edit Station screen is similar to the Add Station screen a To confirm edit station i Press the Right Soft Key b To CANCEL edit station i...

Страница 127: ...6 Measurement will remain The 0 2 0 8 measurements must be performed Velocity Method 0 2 0 8 0 6 0 2 0 8 Measurements will be discarded The 0 6 measurement must be performed Station Type Open water Edge All velocity measurements will be discarded Edge station type is assigned a none velocity method The deleting of incompatible point velocity measurements is not reversible and the user must be cert...

Страница 128: ...station i Press the Left Soft Key Figure 8 15 Bank Station Type Properties associated with the parameters for bank station type are defined in Table 8 4 Table 8 4 Bank Station Type Properties Parameter Min Max Default Decimals Units Required Location 1000 1000 empty 3 m or ft Yes Depth 0 100 empty 3 m or ft Yes Station Type Left Bank Yes Correction Factor 1 1 empty 2 Yes Comment 0 250 empty No The...

Страница 129: ...imals Units Required Location 1000 1000 empty 3 m or ft Yes Depth 0 100 empty 3 m or ft Yes Station Type Island Edge Yes Correction Factor 1 1 empty 2 Yes Comment 0 250 empty No The Island Edge station type is normally selected after Open Water or Ice station types The station type after the first Island Edge is completed will be set to Island Edge by default The station type after the second Isla...

Страница 130: ...8 17 Open Water Station Type Properties associated with the parameters for open water station type are defined in Table 8 6 Table 8 6 Open Water Station Type Properties Parameter Min Max Default Decimals Units Required Location 1000 1000 empty 3 m or ft Yes Depth 0 100 empty 3 m or ft Yes Station Type Open Water Yes Velocity Method Yes Correction Factor 1 1 1 2 Yes Comment 0 250 empty No The defau...

Страница 131: ... h Correction Factor i Comment j To select a station type and or velocity method i Use the left or right arrow key to scroll through the station types and or velocity methods k To add ice station and continue to velocity measurement i Press the Right Soft Key l To CANCEL add ice station i Press the Left Soft Key Figure 8 18 Ice Station Type Properties associated with the parameters for ice station...

Страница 132: ...9 Station Parameters L4 is the distance from the start location on the tag line or measuring tape D4 is the water depth measured from the water surface to the channel bed The value of the start location on the tagline or measuring tape is not required to be zero 0 000m The station location can also be entered in negative direction with the start location at a larger value e g 7 956m and the end lo...

Страница 133: ...d at each fractional depth e g the fractional depths for the two point method at station 2m with a water depth of 1m are the following 0 2 x water depth 0 2m 0 8 x water depth 0 8m a To select a fractional measurement depth i Use the up or down arrow key to scroll through the measurement options b To continue to velocity measurement i Press the enter key c To open data collection menu i Press the ...

Страница 134: ... b Beam Check c SNR d Tilt e Velocity angle f To start a velocity measurement i Press the Right Soft Key g To REVERT to measurement screen i Press the Left Soft Key Figure 8 22 Setting Fractional Depth The key features of the Setting Fractional Depth are explained in Figure 8 23 Top Setting wading rod Automated Beam Check Wading rod setting Figure 8 23 Features of Setting Fractional Depth SNR Tilt...

Страница 135: ...Press the Left Soft Key Figure 8 24 Fractional Depth Measurement The conventions and graphic display features used for displaying Velocity and SNR raw data are defined under Raw Data Display Review Point Measurement 8 3 3 3 Review Point Measurement is a report supplied at the end of each point velocity measurement The report consists of two components tabular summary of numerical calculations perf...

Страница 136: ...iked and mounting correction applied if applicable m s or ft s 4 σV Standard error of X velocity component m s or ft s 4 SNR Mean signal to noise ratio Average of beam 1 and 2 SNR during point measurement dB 3 Angle Flow angle relative to X direction Angle between the mean X velocity component and mean Y velocity component Degree 2 Tilt Mean wading rod angle during point velocity measurement Degre...

Страница 137: ...cal calculations performed on the raw data collected at the station is defined in Table 8 9 Table 8 9 Review Station Variable Description Units Decimal Location Station location measured from the start location on tag line or measuring tape m or ft 3 Dist Prev St Distance between current and previous station m or ft 3 Depth Measured water depth or effective depth for Ice method m or ft 3 Type Stat...

Страница 138: ...ms 1 2 of all point measurements dB 3 Samples Total number of samples received number n a Spikes Total number of spikes removed from mean velocity number n a Angle Mean flow angle relative to X direction Average the velocity angle from each point measurement Degree 2 Tilt Mean wading rod angle of all point velocity measurements Degree 2 Temperature Mean Temperature of all point measurements C or F...

Страница 139: ...egative direction with the start location at a larger value e g 7 956m and the end location at a smaller value e g 0 532m This feature assist when a measurement is performed from the left bank to the right bank and then back using the same tag line setup Start location of measurement at 0 532m 0 532 1 23 2 23 3 23 3 23 4 23 5 23 6 23 7 23 7 956 Start location of measurement at 7 956m Point Velocit...

Страница 140: ...parameter Step 2 Pressure Sensor PS Calibration allows the user to perform pressure sensor calibration The screen is displayed before the first pressure sensor measurement is performed or when the Air Pressure Cal Period expired a To perform PS Calibration i Press the Right Soft Key b To CANCEL PS Calibration i Press the Left Soft Key Figure 8 30 PS Calibration Step 3 Pressure Sensor PS Total Dept...

Страница 141: ...station screen i Press the Left Soft Key Figure 8 32 Measurements The order in how the point velocity measurements are performed at each fractional depth is not set and the user can perform the measurements in any order The software will start at the bottom of each station for pressure sensor measurements Station 1 2 3 4 5 6 7 0 2 0 8 Step 5 Setting Fractional Depth screen allow the setting and pl...

Страница 142: ... indicate if the boundary is too close to the sampling volume Step 6 Fractional Depth Measurement screen displays graphical display of raw data of the following variables during a velocity measurement a Velocity b SNR c Temperature d Tilt e Vel Angle f Probe Depth g Battery h Pressure Figure 8 35 Fractional Depth Measurement Tilt and Velocity Angle indicators are situated on the right hand side of...

Страница 143: ...ables b Velocity c SNR d Temperature e Tilt f Velocity Angle g Probe Depth h Battery i Pressure j To select a variable i Use the up or down arrow key to view a variable k To accept the velocity measurement ii Press the Right Soft Key l To REDO velocity measurement ii Press the Left Soft Key Figure 8 36 Review Point Measurement The conventions and graphic display features used for displaying Veloci...

Страница 144: ...g point measurement dbar 3 Review Station Measurement 8 3 4 4 Review Station measurement screen consists of tabular report and velocity distribution plot supplied at the completion of all point velocity measurements at a station The variables supplied in the report are dependent on the features activated on the handheld velocity method selected and the discharge calculation method The velocity dis...

Страница 145: ... m or ft 3 Type Station type see Station Types n a n a Method Discharge measurement method or velocity method see Determining Mean Station Velocity n a n a Ice Ice Thickness only for Ice method m or ft 3 WS to BI Water surface to bottom of ice only for Ice method m or ft 3 WS to BS Water surface to bottom of slush ice only for Ice method m or ft 3 Corr Factor Mean station velocity mean velocity in...

Страница 146: ... of all point measurements C or F 2 Bnd Lowest Boundary QC value n a n a GPS Latitude GPS derived Latitude DDD MM SS SS GPS Longitude GPS derived Longitude DDD MM SS SS Data Collection Menu 8 3 5 Data Collection Menu allows the user to adjust measurement settings enter staff gauge readings and rated discharge data and view measurement summary The data collection menu can be accessed in between poi...

Страница 147: ...fined under Template Functions Supplemental Data 8 3 5 2 Supplemental Data function enables the user to enter staff gauge readings rated discharge and other variables during the discharge measurement The staff gauge readings and rated discharge are used to compute Weighted Gauge Height The rated discharge is also used to determine percentage discharge at each station or panel during a discharge me...

Страница 148: ...s the discharge and other variables measured from all completed stations Discharge summary requires at least one station with velocity measurements to populate the main variables in the table Discharge Summary screen consists of tabular summary of discharge and other variables measured up to specific point a Discharge Summary Table 8 12 b To close the discharge summary report i Press the Left Soft...

Страница 149: ... or ft 3 Uncertainty Uncertainty in discharge measurement 2 Largest Uncertainty Largest uncertainty in the discharge uncertainty calculation 2 GPS Latitude GPS derived Latitude DDD MM SS SS GPS Longitude GPS derived Longitude DDD MM SS SS Station Summary 8 3 5 4 The Station Summary from the data collection menu displays the completed stations in table format The station summary is a good reference...

Страница 150: ...le m s or ft s 4 Width Panel width per discharge method m or ft 3 Area Panel area per discharge method m2 s or ft2 s 4 Flow Panel discharge per discharge method m3 s or ft3 s 4 Q Station discharge as a percent of the weighted rated discharge of rated discharge entries in supplement data or measured discharge up to that station 2 Angle Mean flow angle relative to X direction Average the velocity an...

Страница 151: ...To CANCEL PS Calibration i Press the Left Soft Key Figure 8 45 PS calibration Step2 PS Calibration screen with Quality Control warning messages based on quality control checks performed on measurement data a To accept quality control warning messages i Press the Right Soft Key b To REDO PS Calibration i Press the Left Soft Key Figure 8 46 Warning Messages Complete Measurement 8 3 5 7 The Complete ...

Страница 152: ... messages ii Press the Right Soft Key d To CANCEL complete measurement operation ii Press the Left Soft Key Figure 8 48 Confirmation Quality Control Messages Step3 Summary screen displays the discharge summary report before the measurement file is closed for further data entry and editing a To confirm complete measurement operation i Press the Right Soft Key ii The software will navigate to the Ma...

Страница 153: ...ue with the measurement at the exact stage when the user navigated away from the discharge mode 8 4 Measurement Summary Measurement Summary is supplied when the Complete Measurement function is selected and displays all the measurement results The Measurement Summary is the last verification of the measurement results before the measurement file is closed for any further measurements or changes Me...

Страница 154: ... Rated discharge entered by user m3 s or ft3 s 4 Width Total width of the measurement section m or ft 3 Mean Depth The mean depth of the measurement section calculated from the total area and width m or ft 3 Area Total area of the measurement section m2 or ft2 4 Mean SNR Average signal to noise ration dB Temp Average temperature measured C or F Vel Mean Average station velocity X velocity componen...

Страница 155: ...ing Configuration Template or create a new template with user defined configuration parameters The template then needs to be associated with a measurement file that is created by the user When the measurement file is created the software is ready for data collection Measurement 9 1 1 The Measurement function enables the user to create a new measurement in either Discharge or General mode The Gener...

Страница 156: ...onditions and organizational requirements The configuration template selected will be assigned to the measurement file and the parameters defined in the template will be applied during the Velocity measurement The New File Template screen consists of the following options a default the template will be based on SonTek default settings b Existing Templates created under Device Configuration A list ...

Страница 157: ...se up or down scroll arrows keys to select a parameter f To accept the new data file configuration i Press the Right Soft Key ii The software will navigate to Automated Beam Check screen g To CANCEL new data file configuration i Press the Left Soft Key ii The software will return to New File Template Figure 9 4 New Data File 9 2 Automated Beam Check Duplicate of 6 4 Automated Beam Check The Automa...

Страница 158: ...tart the automated beam check i Press the Right Soft Key b To CANCEL automated beam check i Press the Left Soft Key ii The software will navigate to Data Collection window c To accept Automated Beam Check i Press the Right Soft Key ii The software will navigate to the Data Collection window Figure 9 5 Automated Beam Check Evaluate Beam Check Results 9 2 2 The automated beam check quality control c...

Страница 159: ...terion can only be checked for sufficient SNR 7 dB Peak Location QC Temperature No criteria defined for Temperature Temperature data included in Automated BeamCheck to allow user to analyze data before measurement None a The graphical display of the Quality Control parameters supplied during the Automated BeamCheck is time series of each parameter If there are any significant variation between the...

Страница 160: ... also describes each individual aspect of the field measurement Data Collection Window Station Measurement Data Collection Menu Data Collection Window 9 3 1 The Data Collection Window can be defined as the control center of the data collection process during velocity measurements All the software functions required to perform velocity measurements is available from the data collection screen The k...

Страница 161: ... parameters that are required to create a station a Location X b Location Y c Water Depth d Measurement Depth e Comment The standard functions available for each station type are f Record GPS Location function availability see GPS Station Tagging g To add a station or start velocity measurement i Press the Right Soft Key h To CANCEL add station i Press the Left Soft Key Figure 9 8 Add Station Uniq...

Страница 162: ...rough the completed stations b To DELETE a station i Press the backspace key ii The software will navigate to the Confirmation screen Figure 9 9 Select Station Confirmation screen requests confirmation of deleting the selected station a To confirm station delete i Press the Right Soft Key b To CANCEL station delete i Press the Left Soft Key c The software will navigate to the Data Collection Windo...

Страница 163: ... Velocity Measurement e g parameters of station defined for velocity measurement are the following a Location X 1 534m b Location Y 2 978m c Water Depth 1 125m d Measurement Depth 0 6m e Velocity Method Two Point f Comment g To add station and continue velocity measurement i Press the Right Soft Key h To CANCEL a new station i Press the Left Soft Key Figure 9 11 Velocity Measurement Step 2 Setting...

Страница 164: ...s too close to the sampling volume Step 4 Velocity Measurement screen displays graphical display of raw data of the following variables during a velocity measurement a Velocity b SNR c Temperature d Battery e Tilt Tilt and Velocity Angle indicators are situated on the right hand side of the screen f Tilt g Velocity Angle h Averaging Time left i To select a variable graphical display i Use up or do...

Страница 165: ...e velocity measurement i Press the Right Soft Key j To REDO velocity measurement i Press the Left Soft Key Figure 9 15 Review Point Measurement The conventions and graphic display features used for displaying Velocity and SNR raw data are defined under Raw Data Display Properties associated with the variable output from the numerical calculations performed on raw data collected is defined in Table...

Страница 166: ...t is available from the data collection window at the completion of point velocity measurement of a station Review Station screen consists of tabular summary of measurements performed at the station a Review Station Table 9 5 b To access review station report i Select the station in the data collection window ii Press the enter key c To EXIT review station report i Press the Left Soft Key Figure 9...

Страница 167: ...t Degree 2 Temp Mean temperature during measurement C or F 2 GPS Latitude GPS derived Latitude DDD MM SS SS GPS Longitude GPS derived Longitude DDD MM SS SS Station Measurement Pressure Sensor 9 3 3 Station Measurement is performed at each Station based on measurement requirements The measurement locations can either be structured such in laboratory environment where the position of the instrument...

Страница 168: ... Measurement Depth parameter Step 2 Pressure Sensor PS Calibration allows the user to perform pressure sensor calibration The screen is displayed before the first pressure sensor measurement is performed or when the Air Pressure Cal Period expired a To perform PS Calibration i Press the Right Soft Key b To CANCEL PS Calibration i Press the Left Soft Key Figure 9 18 PS Calibration Step 3 Pressure S...

Страница 169: ... Pressure Sensor Depth Guide b Beam Check c SNR d Tilt e Velocity angle f To start a velocity measurement ii Press the Right Soft Key g To REVERT to measurement screen ii Press the Left Soft Key Figure 9 21 Setting Measurement Depth The key features of the Setting Measurement Depth are explained in Figure 9 22 Pressure Sensor Automated Beam Check Pressure Sensor Depth Guide Figure 9 22 Features of...

Страница 170: ...n To CANCEL velocity measurement i Press the Left Soft Key Figure 9 23 Velocity Measurement The conventions and graphic display features used for displaying Velocity and SNR raw data are defined under Raw Data Display Review Point Measurement 9 3 3 2 Review Point Measurement is a report supplied at the end of each point velocity measurement The report consists of two components tabular summary of ...

Страница 171: ...tal number of sample received number n a Spikes Number of spikes removed from mean velocity number n a Vel X Mean X velocity component of all samples Velocity is despiked and mounting correction applied if applicable m s or ft s 4 Vel Y Mean Y velocity component of all samples Velocity is despiked and mounting correction applied if applicable m s or ft s 4 Vel Z Mean Z velocity component of all sa...

Страница 172: ...th the variables and numerical calculations performed on the raw data collected at the station is defined in Table 9 7 Table 9 7 Review Station Variable Description Units Decimal Loc X Location X coordinate m or ft 3 Loc Y Location Y coordinate m or ft 3 Depth Measured water depth m or ft 3 Meas Depth Velocity measurement depth m or ft 3 Comment Comment supplied before the measurement n a n a Warn...

Страница 173: ...asurement dbar 3 GPS Latitude GPS derived Latitude DDD MM SS SS GPS Longitude GPS derived Longitude DDD MM SS SS Data Collection Menu 9 3 4 Data Collection Menu allows the user to adjust measurement settings view measurement summary perform automated beam check and complete the measurement The data collection menu can be accessed between station measurements and this ensures that the instrument is...

Страница 174: ...om the data collection menu displays the mean velocity and other variables measured from all completed stations The velocity summary requires at least one station with velocity measurements to populate the main variables in the table Velocity Summary screen consists of tabular summary of velocity and other variables measured up to specific point a Velocity Summary Table 9 8 b To close the velocity...

Страница 175: ...component of all stations m s or ft s 4 SNR Mean Average SNR of all stations dB 2 Automated Beam Check 9 3 4 3 Automated Beam Check function in the data collection menu allows the user to perform beam check during any stage of the velocity measurement The Automated Beam Check function operations conventions and graphic display features are defined under Automated Beam Check Automated Beam Checks p...

Страница 176: ...able to add additional stations and or make any changes to the data captured The complete measurement function is a three step process firstly to determine if the user is satisfied with the velocity measurements secondly to perform quality control checks against all measurement data and lastly to review measurement summary The Complete Measurement process allows the user to review the measurement ...

Страница 177: ...ss the Right Soft Key ii The software will navigate to the Main Menu b To CANCEL complete measurement operation i Press the Left Soft Key Figure 9 33 Summary Discharge Measurement Discard Measurement 9 3 4 6 The Discard Measurement function will discard all configuration settings stations and other data related with the measurement Discarding a measurement will result in deleting all data of the m...

Страница 178: ...urement Summary screen consists of tabular summary of velocity measurement results a Velocity Summary Table 9 9 b To CANCEL the general summary report i Press the Left Soft Key ii The software will navigate to the Data Collection Window c To COMPLETE the general measurement i Press the Right Soft Key ii The software will close the measurement file and navigate to the main menu Figure 9 35 Measurem...

Страница 179: ... velocity component m s or ft s 4 Vel Y Max Maximum station velocity Y velocity component m s or ft s 4 Vel Z Mean Average station velocity Z velocity component of all stations m s or ft s 4 Vel Z Min Minimum station velocity Z velocity component m s or ft s 4 Vel Z Max Maximum station velocity Z velocity component m s or ft s 4 σV Mean Average standard error X velocity component of all stations m...

Страница 180: ... Accuracy i 0 1 of FS temperature compensated over full operating range ii 0 05 Static steady state at 25C iii Additionally compensated for real time water velocity temperature salinity and altitude Temperature Sensor Resolution 0 01 C Accuracy 0 1 C Tilt Sensor Accuracy 1 0 Communication Protocol RS 232 Temperature Operating Alkaline 20 to 45 C 4 F to 113 F NiMH 20 to 50 C 4 F to 122 F Storage 30...

Страница 181: ...100 brightness ADV sensor pinging 50 of the time GPS off and no sleep periods Actual battery life will vary depending on FT2 settings manner of use and brand of battery Power Consumption 1 W Average Direct Power ADV Lab Probe only Power Supply POWER SUPPLY ASSY 12V 20W 1 67A Coin cell Type Coin Cell type is ML2020 Manganese Lithium GPS Horizontal Position Accuracy 2 5m 8 2ft Frequency L1 1 575 MHz...

Страница 182: ...uct text in manual c Drop in use as intended from OEM use OEM s FCC ID eg FlowTracker 2 Bluetooth d Modify use or signal output Analytics Site applies for FCC ID Takes 3 4 weeks through Nemko e Operate at specific frequency w o interference Will require FCC license to operate USB Micro USB IP 67 10 3 Cables and Connectors The FlowTracker2 cable and connector specifications are listed in Table 10 3...

Страница 183: ...8 EC EN61326 1 for NiMH rechargeable batteries that are certified to IEC 62133 FCC IP 67 For further questions on certification standards contact support sontek com Approved batteries are discussed further in Section 4 3 1 10 5 PC System Requirements The PC System Requirements for operating FlowTracker2 desktop software are summarized under the following criteria Microsoft Windows 7 or newer 1GHz ...

Страница 184: ... includes the Desktop Software Handheld Software and ADV Firmware files The FlowTracker2 installation file will be available from the SonTek website http www sontek com or by contacting SonTek Technical Support Upgrading Handheld Software 11 1 1 The upgrading of handheld software and or ADV firmware is performed by uploading a single firmware file with ft_firmware extension onto the handheld from ...

Страница 185: ...on options b Select communication medium i USB Make sure USB cable is connected before USB option is selected ii Bluetooth Select handheld serial number from dropdown list and select the Connect function Figure 11 3 Device Communication Window If the handheld serial number is not listed select the content in the box using mouse and start typing the serial number When the serial number is entered s...

Страница 186: ...ow a variety of mounting arrangements Top setting wading rods are available from SonTek FlowTracker2 Handheld 11 2 1 The handheld should be secured during operation and it is recommended that the handheld is mounted to the wading rod during measurements If the FlowTracker2 is not in use the handheld should be stored in the carry case supplied The protective yellow jacket that is supplied with the ...

Страница 187: ...t The size of the threaded insert is 20 User supplied mounting brackets should avoid direct contact with the keypad and screen Probe Mounting Bracket 11 2 3 Top Setting Rod J Bracket to connect the 2D or 2D 3D Flowtraker2 probe to the top setting wading rod a The J Bracket is available for mounting the probe from a top setting wading rod Both the bracket and complete wading rods are available from...

Страница 188: ...ker2 handheld for prolonged periods as damage can occur to the handheld if the batteries are leaking It is recommended that batteries are removed from the handheld if the instrument is not used b The use by date should be recorded and referenced during routine maintenance and it is recommended that expired batteries should not be used in FlowTracker2 Battery manufacturer guidelines must be followe...

Страница 189: ...tery compartment or probe cable connector contact SonTek It is not recommended to use the instrument if there is moisture in the battery compartment Transducers 11 3 2 2 Biological growth on the transducers does not affect velocity measurements but can decrease acoustic signal strength and potentially increase noise in velocity data in clear water a Periodic cleaning of the FlowTracker2 transducer...

Страница 190: ... FlowTracker2 Housing 11 3 5 Moisture in the air can potentially damage FlowTracker2 electronics if allowed to condense inside the handheld housing a The handheld is shipped with a desiccant pack inside to absorb moisture b We do not recommend opening the handheld housing without specific instructions from SonTek If the housing has not been opened the desiccant should not need to be replaced Zinc ...

Страница 191: ... can operate reliably with SNR as low as 3 4 dB f A lack of scattering material can be remedied by adding seeding Field Applications 11 4 2 For field applications seeding can be introduced by stirring the bottom e g walking across the river upstream of the measurement location In some situations seeding material will need to be introduced An ideal seeding material should have the following qualiti...

Страница 192: ...ng batteries b Verify that all batteries are correctly oriented as shown on the battery holder c Ensure the battery cap is threaded correctly and securely screwed down d Press the On Off power button for at least one second e Try to establish direct communication using USB cable Cannot Communicate with the FlowTracker2 11 5 2 If you are unable to establish external communications with the FlowTrac...

Страница 193: ...sh the cause a Lack of scattering material in the water is the most common problem particularly in large laboratory tanks See the FlowTracker2 Principles of Operation for details about seeding requirements b Run Beam Check as described in Beam Check This can address all aspects of FlowTracker2 operation in particular signal strength scattering seeding issues and probe operation c Inspect the FlowT...

Страница 194: ...izations and this also applies to the application of FlowTracker2 instrument The following aspects need to be considered when planning to perform discharge measurements using FlowTracker2 instrument It is imperative that the user follow their respective organization and or local authority guidelines in Health and Safety requirements in the work environment Planning Field Work 11 6 1 Planning and d...

Страница 195: ...need to be verified with the owner Measurement Site Conditions 11 6 3 Measurement site conditions encapsulate a number of hydraulic and physical factors that determines if it is feasible to perform a discharge measurement The application of the FlowTracker2 instrument using the wading method is directly related to these conditions The following are some aspects that need to be taken into account b...

Страница 196: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 195 ii Stationary Measurement ...

Страница 197: ... measurement file is created It is expected that this action is only required by advanced users to extract the data in either a database or 3rd party evaluation software The FlowTracker2 measurement file consists of three different file types given below The Beam Check and Point measurement files are placed in sub folders to separate from the main Data File a Beam Check b Point Measurements c Data...

Страница 198: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 197 Measurement File Framework 12 1 1 ...

Страница 199: ...trolConfiguration SnrThreshold Double StdErrorThreshold Double SpikeThreshold Double VelocityAngleForWarning Double TiltAngleForWarning Double Discharge DischargeConfiguration optional DischargeEquation DischargeEquation DischargeUncertainty DischargeUncertainty DischargeReference DischargeReference MaxStationDischargeForCaution Double MaxStationDischargeForWarning Double MaxDepthChangeForWarning ...

Страница 200: ...ampleStatistics PointMeasurementSampleStatisti cs OriginalVelocity XyzDataSummary X MeasurementValueSummary Min Double Max Double Average Double StandardDeviation Double Count Int32 Y MeasurementValueSummary Min Double Max Double Average Double StandardDeviation Double Count Int32 Z MeasurementValueSummary Min Double Max Double Average Double StandardDeviation Double Count Int32 DespikedVelocity X...

Страница 201: ...nt32 Tilt MeasurementValueSummary Min Double Max Double Average Double StandardDeviation Double Count Int32 Pressure MeasurementValueSummary Min Double Max Double Average Double StandardDeviation Double Count Int32 ProbeDepth MeasurementValueSummary Min Double Max Double Average Double StandardDeviation Double Count Int32 Snr BeamDataSummary Beam0 MeasurementValueSummary Min Double Max Double Aver...

Страница 202: ...evel Double PeakLocation Double PeakLevel Double HandheldInfo HandheldInfoSummary SoftwareVersion String WadingRod WadingRod Units UnitType ProbeInfo ProbeInfoSummary SerialNumber String FirmwareVersion String NumberOfBeams Int32 NominalBeamStatistics ReadOnlyCollection BeamSt atistics NoiseLevel Double PeakLocation Double PeakLevel Double Calculations StationCalculations Warnings QualityControlWa...

Страница 203: ...uble Snr Double Temperature Double RatedDischarge Double GaugeHeight Double UncertaintyIso DischargeUncertaintyCalculat ions Accuracy Double Depth Double Velocity Double Width Double Method Double NumberOfStations Double Overall Double UncertaintyIve DischargeUncertaintyCalculat ions Accuracy Double Depth Double Velocity Double Width Double Method Double NumberOfStations Double Overall Double Beam...

Страница 204: ...yCollection Double Beams ReadOnlyCollection Diagnos ticsBeamData Statistics BeamStatistics NoiseLevel Double PeakPosition Double PeakLevel Double Profile ReadOnlyCollection Double DataCollectionConfiguration DataCollectionConfiguration optional HandheldInfo HandheldInfo SerialNumber String SoftwareVersion String BoardsInfo String CpuSerialNumber String OperatingSystem String Settings Object option...

Страница 205: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 204 Point Measurement Details Base Type Description Main Tier 1 st Tier 2 nd Tier 3 rd Tier 4 th Tier ProbeDepths ReadOnlyCollection Double ...

Страница 206: ...tion BeamSt atistics NoiseLevel Double PeakPosition Double PeakLevel Double RawConfiguration Object optional Samples ReadOnlyCollection DiagnosticSample Time DateTime Adv AdvData Velocity XyzData Snr Double Sensors SensorData Temperature Double SoundSpeed Double Pressure Double Voltage Double Accelerometer XyzData Boundary BoundaryData BoundaryRange Double VelocityAmbiguity Double MaxPingPrecision...

Страница 207: ... BeamData Base Type Description Main Tier 1 st Tier 2 nd Tier 3 rd Tier 4 th Tier Beam0 Double Beam1 Double Beam2 Double GpsRecord Base Type Description Main Tier 1 st Tier 2 nd Tier 3 rd Tier 4 th Tier DeviceTime DateTime SatelliteTime TimeSpan Latitude Double Longitude Double FixQuality Int32 NumberOfSatellites Int32 Hdop Double Altitude Double GeoidalSeparation Double ...

Страница 208: ...dis Discharge Final data results in a self explanatory form that is easy to integrate with database utilities Rows Columns sum Summary Velocity and quality control data from all measurements Columns The layout of the data in each of the CSV files is organized based on Rows Columns or a combination of both The data descriptions for the Row or Column layout are defined in Table 12 2 The Desktop Soft...

Страница 209: ... D G Handheld operating system Wading Rod D Type of wading rod ADV_System_Frequency D G ADV system frequency ADV_Serial_Number D G ADV serial number ADV_Firmware_Version D G ADV firmware version ADV_Number_Of_Beams D G ADV number of beams ADV_Noise_Level D G ADV noise level ADV_Peak_Position D G ADV peak position ADV_Peak_Level D G ADV peak level Configuration_Data_Collection_Mode D G Data collect...

Страница 210: ...celeration data with date and time stamp The variables exported in the raw data file are given in Table 12 4 Table 12 4 Raw Data File Variables Variable Mode Description D G Burst or measurements number Year D G Year Month D G Month Day D G Day Hour D G Hour Minute D G Minute Second D G Second VelX D G Raw 1 second X velocity VelY D G Raw 1 second Y velocity VelZ D G Raw 1 second Z velocity SNR1 D...

Страница 211: ...measuring site stage discharge relationship Rated_Height D Gauge Height taken for water level reference Minimum_Boundary_Status D G Undefined or lowest of boundary conditions found Total_Width D Total width of measurement section Total_Area D Total area of measurement section Total_Discharge D Total discharge of measurement Mean_Depth D G Average depth of the section Mean_Velocity_Vx D The area we...

Страница 212: ...o between measurement depth and total depth and this should not 1 Low_SNR D G Warning if SNR below 4dB Approaching_Low_SNR D G Warning if SNR between 4dB and 7 dB Beam_SNRs_Not_Similar D G Difference in SNR for any 2 beams is SNR Threshold Large_SNR_Variation D G One second SNR data varies more than expected during a measurement along a single beam SNR_Threshold_Variation D SNR more than SNR Thres...

Страница 213: ... Automated_BeamCheck D G Automated_BeamCheck Record_Number D G Sequence number assigned to each automated beam check Date_And_Time D G Date and time of automated beam check Noise_Level_Check D G Measured electronics noise level is compared to reference data SNR_Check D G The SNR is checked as sufficient for reliable data collection Peak_Location_Check D G The physical location of the sampling volu...

Страница 214: ...r D G Standard error of Z velocity SNR1 D G Signal to Noise Ratio beam 1 SNR2 D G Signal to Noise Ratio beam 2 SNR3 D G Signal to Noise Ratio beam 3 Bnd D G Boundary QC measurement Temp D G Water temperature CorrFact D G Correction factor used to scale mean station velocity Tilt D G Mean wading rod angle during point velocity measurement MeanV D Mean panel velocity based on panel discharge and are...

Страница 215: ...th and Depth2 IceD D G Ice thickness WsIceD D G Water surface to bottom of ice WsSlushD D G Water surface to bottom of slush VelX D G Mean X velocity component of point velocity measurement VelY D G Mean Y velocity component of point velocity measurement VelZ D G Mean Z velocity component of point velocity measurement Angle D G Velocity angle calculated as atan Vy Vx VxErr D G Standard error of X ...

Страница 216: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 215 Variable Mode Description measurement ...

Страница 217: ...ure Double CTL DefaultTemperature or NaN if CTL TemperatureMode is MEASURED SoundSpeed Double CTL DefaultSoundSpeed or NaN if CTL TemperatureMode is MEASURED MountingCorrection Double CTL MountingCorrection QualityControl QualityControlConfiguration SnrThreshold Double StdErrorThreshold Double SpikeThreshold Double VelocityAngleForWarning Double TiltAngleForWarning Double Discharge DischargeConfig...

Страница 218: ...onal CorrectionFactor Double DIS CorrFact Comment String Not exported PointMeasurements List PointMeasurement optional Id Guid Not exported FractionalDepth Double DIS FractionalDepth DistanceFromBottom Double DIS MeasD Distance from water surface exported StartTime DateTime first DAT ymdhms EndTime DateTime last DAT ymdhms Not exported OriginalVelocity X MeasurementValueSummary Min Double Calculat...

Страница 219: ... from DAT file samples Not exported Average Double Calculated from DAT file samples Export StandardDeviation Double Calculated from DAT file samples Not exported Count Int32 Calculated from DAT file samples Not exported Temperature MeasurementValueSummary Min Double Calculated from DAT file samples Not exported Max Double Calculated from DAT file samples Not exported Average Double Calculated from...

Страница 220: ...e samples Not exported Average Double Calculated from DAT file samples Export StandardDeviation Double Calculated from DAT file samples Export Count Int32 Calculated from DAT file samples Not exported Beam2 MeasurementValueSummary Min Double Calculated from DAT file samples Not exported Max Double Calculated from DAT file samples Not exported Average Double Calculated from DAT file samples Export ...

Страница 221: ...vel Double Calculations StationCalculations Warnings QualityControlWarnings Not exported MeanVelocityInVertical XyzData Not exported MeanPanelVelocity XyzData DIS MeanV Only Vx is exported Width Double Not exported Area Double DIS Area Discharge Double DIS Flow FractionOfTotalDischarge Double DIS Q Snr BeamData Not exported Temperature Double Not exported VelocityAngle Double Not exported Boundary...

Страница 222: ...Depth Velocity Double DIS UncertaintyIso Velocity Width Double DIS UncertaintyIso Width Method Double DIS UncertaintyIso Method NumberOfStations Double DIS UncertaintyIso _Stations Overall Double DIS UncertaintyIso Overall UncertaintyIve DischargeUncertaintyCalculations Accuracy Double DIS UncertaintyIve Accuracy Depth Double DIS UncertaintyIve Depth Velocity Double DIS UncertaintyIve Velocity Wid...

Страница 223: ...s SensorData Temperature Double SUM Temp Not exported SoundSpeed Double Not exported Pressure Double Not exported Voltage Double SUM Batt Not exported Accelerometer XyzData Not exported Diagnostics DiagnosticsSample Boundary BoundaryData Not exported ProfileRange ReadOnlyCollection Double Statistics BeamStatistics NoiseLevel Double Not exported PeakPosition Double Not exported PeakLevel Double Not...

Страница 224: ...erOfBeams Not exported IsPressureSensorPresent Boolean PressureSensorLocation XyzData ProbeBottomZ Double NominalBeamStatistics ReadOnlyCollection BeamStatistic s NoiseLevel Double Not exported PeakPosition Double Not exported PeakLevel Double Not exported ProbeInfo ProbeInfo RawConfiguration Object optional Not exported Spikes ReadOnlyCollection Int32 Set by FT2 de spike Not exported AirPressure ...

Страница 225: ...ture sensor The FlowTracker2 offers ADV performance from a simple handheld interface allowing rapid data collection without the use of a computer Some common applications include River discharge measurements using established methodology including USGS ISO Open channel flow measurements Current measurements in large pipes Rapid multi point current surveys Current monitoring in water treatment faci...

Страница 226: ...ms intersect at a volume of water located a fixed distance 10 cm 4 in from the tip of the probe e The beam intersection determines the location of the sampling volume the volume of water in which measurements are made The FlowTracker2 Measurement Principle 13 3 2 a The transmitter generates a short pulse of sound at a known frequency b The sound travels through the water along the transmitter beam...

Страница 227: ...ansmit pulse travels through the water sound is reflected in all directions d Immediately following the transmit pulse reflections come from outside the receiver beam The receiver measures only the ambient noise level e As the pulse propagates along the transmit axis it moves closer to the receiver beam The receiver sees an increase in signal strength f Signal strength reaches a maximum at the int...

Страница 228: ...of any Doppler processing technique In the simplest terms pulse coherent processing works as follows a The FlowTracker2 sends two pulses of sound separated by a time lag τ b Each receiver measures the phase φ of the return signal from each pulse c The change in phase φ2 φ1 divided by the time lag τ is proportional to velocity d Because of the nature of the phase measurement which can only be deter...

Страница 229: ...led the bistatic velocity c The FlowTracker2 uses one transmitter and two or three receivers for 2D or 3D probes d See Probe Configurations for other FlowTracker2 probe configurations e Receivers intersect with the transmit beam pattern at a common sampling volume f Bistatic velocities are converted to Cartesian XYZ velocities using the probe geometry the relative angles of transmit and receive be...

Страница 230: ... positive X axis is defined perpendicular to both the probe s stem and the axis of the transmit transducer in the direction of receiver arm 1 marked with a red band c The positive Y axis is defined along the axis of the transmit transducer from the transmitter towards the sampling volume making a right handed coordinate system 2D 3D Side Looking Probe Figure 30b 13 7 2 a The positive Z axis is def...

Страница 231: ...ries of velocity at each measurement location over the user specified averaging interval Velocity Data 13 8 2 The FlowTracker2 provides several important performance advantages a It can measure 2D or 3D water velocities from 0 001 to 4 0 m s 0 003 to 13 ft s b Velocity data are accurate to 1 of the measured velocity in a one second sample c Velocity data can be used immediately without any post pr...

Страница 232: ...acker2 is very well suited to low flow applications to less than 1 cm s 0 03 ft s Quality Control Data 13 8 4 In addition to velocity the FlowTracker2 records quality control data with each measurement station to quickly evaluate velocity data quality The quality control parameter details are discussed in Quality Control Parameters Section 6 Quality Control 13 9 Special Considerations Probe Config...

Страница 233: ...cisely determine the location of the sampling volume Sound Speed Function 13 10 1 The speed of sound in water is primarily a function of temperature and salinity a Temperatures change of 5 C 9 F results in a sound speed change of 1 b A salinity change of 12 results in a change in sound speed of 1 c A 1 error in sound speed results in a 2 error in velocity data Compensate for Changes 13 10 2 To com...

Страница 234: ...rement due to lack of particles in the water it is recommended to perform an Automated Beam Check If the results are within the instrument specifications and quality control parameters user can start with velocity measurements The FlowTracker2 can return reliable measurements down to about 3 dB in SNR although we recommend 10 dB and above for best operating conditions 13 11 Flow Interference The F...

Страница 235: ...water By default no correction for flow disturbance is applied to FlowTracker2 data If you are using a standard top setting wading rod and have decided to apply a correction SonTek typically recommends using a correction of 1 0 For additional information about the flow disturbance effect contact SonTek directly To apply a flow disturbance correction set the Mounting Correction from the Data Collec...

Страница 236: ...ry close Using the Total Pressure P0 as measured by the pressure sensor instead of the Static Pressure P in these cases provides a good conversion for all practical purposes However for faster flowing water ignoring the Dynamic Pressures Pd is not an option and would result in a significant error in the pressure to depth conversion Correcting for Dynamic Pressure is essential to ensure a proper de...

Страница 237: ...𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊 𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 𝑎 2 Knowing the Dynamic Pressure Pd and the Total Pressure P0 the static pressure can then be computed using Equation 13 5 Equation 13 5 Static Pressure 𝑃 𝑃0 𝑃𝑑 If we substitute Equation 13 4 in Equation 13 5 the final equation for correcting the pressure measured by the FlowTracker2 internal pressure sensor is defined in Equation 13 6 Equation 13 6 Corrected Pressure 𝑃 𝑃0 0...

Страница 238: ...a Connect to a FlowTracker Handheld ADV to download data and perform recorder functions The layout of the FlowTracker2 Desktop Software upon startup is shown in Figure 14 1 Each function and feature of the software will be addressed in the subsequent sections Specific software functions will have the sequence of buttons or tabs taken to reach that function next to the function title in blue italic...

Страница 239: ...e Windows Installer Package msi file corresponding to the type of computer on which you wish to install the software 32 bit or 64 bit Accept the terms in the License Agreement shown in Figure 14 2 and click Install Figure 14 2 Installation Dialog for FlowTracker2 Desktop Software During the process you will be prompted to install a driver with the message shown in Figure 14 3 This driver must be i...

Страница 240: ...ng Language Settings User Interface Language 14 3 1 1 The software language can be changed through the User Interface tab in the Settings dialog The language choices include Auto Detect using your computer settings Catalan Chinese simplified and traditional English French German Greek Italian Japanese Korean Portuguese Romanian Russian Spanish Custom For languages not included in this list Custom ...

Страница 241: ...ll restart automatically to implement the changes General Tab 14 3 2 Figure 14 5 Changing General Settings Show paired device connection options Settings General Show paired device 14 3 2 1 connection options Checking this box will provide more options during device communication using Bluetooth It allows you to select a COM port manually if you already have a Bluetooth device paired It is recomme...

Страница 242: ...ck for crash reports option is toggled on upon startup the software will search for crash reports If crash reports are found the dialog in Figure 14 6 will appear prompting for the option to send crash reports to SonTek Technical Support Figure 14 6 Crash report dialog Toggling this option off will disable this prompt upon startup of the software Clicking Do not show again will uncheck the box in ...

Страница 243: ...options are available Table 14 1 Units Available for Software Parameters Measurement Unit Options Angle Degrees deg Radians rad Area Square feet ft2 Square meters m2 Counts Counts cnts Depth Centimeters cm Fathoms fms Feet ft Inches in Kilometers km Meters m Miles miles Millimeters mm Yards yd Distance Centimeters cm Fathoms fms Feet ft Inches in Kilometers km Meters m Miles miles Millimeters mm Y...

Страница 244: ...econd yd s Temperature Celsius o C Fahrenheit o F Kelvin o K Time Span Seconds s Voltage Millivolts mV Volts V Water Velocity Centimeters per second cm s Feet per second ft s Furlongs per fortnight furlongs fortnight Inches per second in s Kilometers per hour km h Knots kt Meters per second m s Miles per hour mph Millimeters per second mm s Yards per second yd s To change units click on the approp...

Страница 245: ...e PDF Discharge Measurement Summary report The image format accepted for organization logo is png The network path where the organization logo should be stored on user operating platform is the following C Program Files SonTek FlowTracker2 v1 6 SupportFiles Image Height Settings PDF Format PDF icon image height in centimeters 14 3 4 2 The PDF Icon Image Height in Centimeters feature configures the...

Страница 246: ...xclude the information from the report Include Charts and Tables Settings PDF Format Include these charts and 14 3 4 5 tables The Charts and Tables available for inclusion on the PDF report consists of the following Select the checkbox to either include or exclude the information from the report Discharge Velocity and Depth Charts Measurement Results Quality Control Warnings Automated Beam Check A...

Страница 247: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 246 Configuration Changes ...

Страница 248: ...wTracker1 Import Utilities FlowTracker1 Import 14 4 1 This is a conversion tool allowing users to open measurements taken by the Original FlowTracker Handheld ADV instrument with the wad extension Please see Opening Original FlowTracker Handheld ADV Data Files WAD files for instructions on how to use this feature ...

Страница 249: ...r future use first pick a language from the drop down menu at the top Then click the Save or Save As button and specify the name of the language file you wish to create A lang file will be created in the directory of choice Import Language File Utilities Import Language File 14 4 3 Once a lang file is created see previous section this file can be applied to the software using the Import Language F...

Страница 250: ... from a CSV file The steps involved in creating a CSV file and multiple templates are summarized below a Create CSV Template i Open existing template from the View Data button ii Select Save Template as CSV File feature iii Save the CSV file to user defined folder Figure 14 11 Save Template as CSV File b Populate Fields in CSV File i The headers supplied in the top row of CSV file define parameter...

Страница 251: ...upload to FlowTracker2 Handheld device please refer to Uploading and Downloading Templates 14 5 Connecting to the FlowTracker2 Handheld ADV The FlowTracker2 Desktop Software is designed to connect to the FlowTracker2 Handheld ADV only User will not be able to use FlowTracker2 desktop software to connect to an Original FlowTracker Handheld ADV User will also not be able to use the Original FlowTrac...

Страница 252: ...ation dialog e From the FlowTracker2 Desktop Software in the Device dialog click the USB button The software will attempt to connect automatically with the FlowTracker2 f Once successfully connected the FlowTracker2 data files will be listed as shown in Figure 14 16 The handheld will indicate that it is connected to your computer Bluetooth Connection 14 5 2 Do not use your Windows Bluetooth manage...

Страница 253: ...cker2 data files will be listed as shown in Figure 14 17 The handheld will indicate that it is connected to your computer The FlowTracker2 software will remember different devices after they are first connected using Bluetooth To remove a device open the Serial Number drop down menu and click remove Figure 14 16 Bluetooth Connection Dialog 14 6 Device Menu and Functions Once connected with the Flo...

Страница 254: ...ltiple files To select a single file click on that file To select a range of files hold the SHIFT key and select your files To select multiple specific files hold the CTRL key and select your files You can also de select files using the CTRL key Once the files are selected the Download button will be activated Click the Download button The Download dialog shown in Figure 14 18 will appear Function...

Страница 255: ...er files are stored in a folder indicated by the device serial number iii Single Folder all files stored in single folder indicated by the Download Location c The File Name Conflict Resolution provides options when downloading a file from the device with the same file name as one existing in the Download Location directory The choices are to i Keep Both both files placed in same folder and newest ...

Страница 256: ... function will open a dialog to select the FlowTracker2 firmware file Select the appropriate file and click Open the firmware upgrade will begin automatically First the firmware file will be uploaded to the handheld device Then the handheld device will disconnect automatically from the computer and will perform the upgrade When the upgrade is complete the handheld will restart automatically Occasi...

Страница 257: ... number operator etc This feature allows faster operation because the user will not need to input certain values for each measurement Please see Configuration Templates on how to create and manipulate templates from the FlowTracker2 Handheld device To download an existing template from the FlowTracker2 click the Templates button after connecting with a unit The available templates stored on the de...

Страница 258: ...plate for instructions on opening and editing template files Custom Localization 14 6 5 Custom Localization allows a user to import Language files onto the handheld device Please see Run Translator for instructions on creating a Language file lang Disconnecting the FlowTracker2 14 6 6 To disconnect the FlowTracker2 from the computer click the Disconnect button 14 7 Opening a Data File To view Flow...

Страница 259: ...e or General Mode measurement To open a ft file from the Open File dialog navigate to the appropriate folder select All files or FlowTracker file in the drop down menu on the lower right select the appropriate ft file to be opened from the list populated and click the Open button Sample data files are included with the USB that came with your FlowTracker2 package and are located in the FlowTracker...

Страница 260: ...heck file produces the screen shown in Figure 14 22 The time stamp on the top of the file dialog corresponds to when the beam check was started in local time Handheld information probe information beam check statistics and quality control warnings are displayed in the first row of panels For each sample Sample information and statistics are displayed in the second row of panels A plot of the SNR d...

Страница 261: ...es ft_template 14 7 3 The FlowTracker2 software allows you to open and edit template files separately from the Handheld unit To open a template ft_template file follow the same instructions for opening a ft file but select FlowTracker template file ft_template or select an appropriate ft_template file from the All files drop down option ...

Страница 262: ... fields will not be available To save changes to the template click the Save Template File button Figure 14 23 Discharge Template Opening Original FlowTracker Handheld ADV Data Files WAD files 14 7 4 The FlowTracker2 software can import Original FlowTracker Handheld ADV data from either wad or ASCII files The Original FlowTracker files are not directly imported and the FlowTracker2 software provid...

Страница 263: ...r2 software the Original FlowTracker discharge will be recalculated based on FlowTracker2 Engine Table 14 2 Original FlowTracker File Format Import File Format Calculation Engine Requirement ASCII Not Recalculated Original FlowTracker Engine The 4 ASCII and WAD files must be present in the same folder The DIS DAT CTL and SUM ASCII files are exported using the Original FlowTracker desktop software ...

Страница 264: ...port Folder Select the folder containing multiple wad files you would like to convert The tool will look within subfolders recursively to convert all wad files with associated ASCII exports If the ASCII exports do not exist in the same folder s as the wad files an error message will appear The resulting files converted will have the same file name but the wad extension will be replaced with FlowTr...

Страница 265: ...d serial number Handheld device serial number Probe serial number Probe serial number not available with Original FlowTracker Probe firmware Probe firmware Handheld software Handheld software version Discharge Summary Stations Number of stations measured Mean depth Mean depth over all stations Mean velocity Mean velocity over all velocity measurements Mean SNR Mean Signal to Noise Ratio over all v...

Страница 266: ...n at the left regardless of whether measurements were taken starting at the left or right bank Plots available are Station discharge discharge per station Velocity mean velocity per sample Blue vectors indicate the mean velocity measured in the X direction with respect to the ADV probe If multiple points exist the blue vector represents the vertical average The red vector s indicate actual velocit...

Страница 267: ...s measured during a station point measurement spanning chosen sampling period SNR mean beam SNR measured during a station point measurement spanning chosen sampling period Station information Station information summary Values displayed are described in Table 14 4 The number of rows and columns that are viewable can be changed by using the four arrows that appear above the station information summ...

Страница 268: ... probe X axis Velocity standard error Velocity standard error Boundary interference Boundary interference quality parameter Best Good Fair Poor Tilt Mean Tilt Correction factor User entered correction factor Width Width of section Area Area of section Mean velocity Mean velocity calculated by dividing discharge by area Station discharge Station discharge Temperature Mean station temperature Warnin...

Страница 269: ...ure 14 28 contains the following plots The point measurement selection can be performed by selecting the appropriate station number in the Station Number column on the left of plots All point measurements at the same station will be allocated the same station number The header of each plot distinguishes between the specific station number and point measurement Velocities X Y and Z if using a 3D pr...

Страница 270: ...riod Pitch Pitch measured during a station point measurement spanning chosen sampling period Roll Roll measured during a station point measurement spanning chosen sampling period The continuous lines displayed in the graphics are defined under the following categories i Thin continuous line represents the one second raw data ii Thick continuous line represents moving average of the one second raw ...

Страница 271: ...e following plots Temperature the mean temperature recorded during each station plotted with respect to the tagline location of each station In the case of multiple point measurements per station a value will appear for each point measurements at a given station location Tilt the mean tilt recorded during each station plotted with respect to the tagline location of each station In the case of mult...

Страница 272: ... values are the following Gauge height time time at which gauge height is taken Gauge height gauge height read from external source Rated discharge rated discharge acquired from external source Temperature temperature acquired from external source Salinity salinity acquired from external source Gauge height comments any comments associated with gauge height or rated discharge reading Supplemental ...

Страница 273: ... In the case of multiple point measurements per station a value will appear for each point measurements at a given station location Spike the number of spikes that were detected over all samples at each station Spikes are removed from the velocity measurement In the case of multiple point measurements per station a value will appear for each point measurements at a given station location Velocity ...

Страница 274: ...the Settings Pane is summarized in Table 14 5 Table 14 5 Summary of Settings Pane Values Category Edit Value Description Site Details Site Name Site name Site Number Site number Operator s Operators s Comment Comments Station Warning Settings Maximum station discharge Maximum discharge at each station after which a warning will be issued Maximum depth change Maximum depth change between consecutiv...

Страница 275: ... Control Settings SNR threshold SNR threshold dB If mean SNR at sample volume is below this value a warning will be issued Standard error threshold Standard error threshold in velocity units If standard error over all samples at each station exceeds this threshold a warning will be issued Spike threshold Spike threshold in counts If number of spikes at a station exceeds this value a warning will b...

Страница 276: ...be edited with the FlowTracker2 software Enable Editing 14 9 1 FlowTracker2 ft File Editing 14 9 1 1 By default any measurement taken with the FlowTracker2 will have editing enabled The editing pane appears in the top right corner of the software shown in Figure 14 33 Figure 14 33 FlowTracker 2 Editing Buttons Functions include Apply Settings and Recompute Discharge after any changes in the Settin...

Страница 277: ...ert back to the last saved edits Revert to Original Data reverts to the original ft file that was downloaded from the FlowTracker2 Handheld unit The original ft file will always be preserved regardless of new edits saved Lock File for Editing enabling the feature will prevent any changes to the original measurement file or edited data during post processing If changes are required to the measureme...

Страница 278: ... values can be edited To edit type in the appropriate changes in the input boxes and press the Apply Settings and Recompute Discharge button Changes will update all necessary parameters displayed in all panes and tabs in the software data view As shown in Figure 14 35 changed values will appear in the appropriate panes with their original value included in square brackets Locked File for Editing o...

Страница 279: ...o edit values associated with individual stations within a measurement first go to the Stations tab The editable values associated with each station are indicated in Table 14 4 Identify the station you wish to edit and press the Edit button on the left of that station line shown in Figure 14 36 Recalculated Value Original Value ...

Страница 280: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 279 Figure 14 36 Edit by Station Edit a Station ...

Страница 281: ... input box will appear in the main dialog to enter a manual velocity value To select None for the Velocity Method select the None option and hit Accept Location Change the location at which the station was taken Please note if location does not satisfy the Maximum Spacing Change criteria set in the Settings Pane a warning will appear Depth Change the water depth at the station Please note if the d...

Страница 282: ...ure 14 31 To edit existing supplemental data simply double click on the field you wish to edit and enter in a new value To add a line of supplemental data click the Add Supplemental Data button To add additional lines of supplemental data use the green up down arrows to add rows above below the current line respectively 14 10 Data Export and File Formats The FlowTracker2 data can be exported from ...

Страница 283: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 282 ...

Страница 284: ...ick the Export button shown in Figure 14 39 Figure 14 39 Export to ASCII Button A dialog will appear with the options to Show Headers and Export in English Language The export function will not automatically export the data you have opened for viewing Instead a dialog will appear to select the ft file you wish to export and following this you will select a folder to where the export will save the ...

Страница 285: ...tlab Tools for JSON files 14 10 3 Although the FlowTracker2 software does not have a specific Matlab export a number of Matlab tools exist to parse and convert JSON format files to Matlab readable format and are readily available through various third party websites If help is needed in using Matlab to read the FlowTracker ft files into Matlab please contact SonTek support sontek com ...

Страница 286: ... to perform the following functions Collect FlowTracker Data at different sampling rates Generate CSV file of measured data Perform Beam Check before measurement Upgrade firmware FlowTracker2 probe A license file is required to enable the Lab ADV feature for a FlowTracker2 probe assembly where the license is specific to the probe assembly and is based on its serial number Each probe assembly that ...

Страница 287: ...robe assembly where the license is specific to the probe assembly and is based on its serial number Each probe assembly that will be used with the desktop software Lab ADV feature will require the purchase of a license The Lab ADV feature is enabled by uploading the license file into the FlowTracker2 Desktop Software The upload of the license file can be performed from the Settings menu under the ...

Страница 288: ...t requirements Table 15 1 Configuration Settings Category Value Description Communication COM Port COM port assigned to FlowTracker2 probe assembly It is recommended that the Windows Device Manager be used to determine assigned COM port Sampling Sampling Rate Sampling rate selected for measurement The Lab ADV has four sampling rates 1 2 5 and 10 Hz Velocity Range Optimizes ADV operation for expect...

Страница 289: ... calibrations Approximate Site Latitude deg Used for the calculation of Water Density based on Salinity user entry Latitude and Altitude Approximate Site Altitude m Used for the calculation of Water Density based on Salinity user entry Latitude and Altitude Environmental Salinity PSS 78 User defined salinity value This will be used in the sound speed calculation Temperature Override Optional User ...

Страница 290: ...ty Range Settings Velocity Range Absolute max velocity in arbitrary direction in ideal conditions Absolute max velocity in X direction in ideal conditions Recommended max velocity in arbitrary direction in ideal conditions Recommended max velocity in X direction in ideal conditions Auto 112 cm s 448 cm s 60 cm s 200 cm s 10 cm s 10 cm s 40 cm s 3 cm s 10 cm s 20 cm s 14 cm s 52 cm s 7 cm s 20 cm s...

Страница 291: ...15 3 1 Load Configuration allows the user to upload a configuration file based on previous measurements configuration settings This can simplify the setup process if the same settings will be used for multiple measurements Save Configuration 15 3 2 Save Configuration allows the user to create a configuration file based on the current configuration settings The configuration file created will have ...

Страница 292: ...k Figure 15 5 Automated Beam Check Automated Beam Check a Deployment instructions are supplied before Automated Beam Check commences b The Lab ADV collects approximately 12 seconds of beam profile data during the Automated Beam Check c Warnings will be supplied if any criteria was exceeded during the Automated Beam Check Probe Info 15 3 4 Probe Info supplies the FlowTracker2 probe assembly informa...

Страница 293: ...Firmware Upgrade Warning 15 4 Data Collection The Data Collection window displays the raw data collected by the FlowTracker2 ADV during the measurement shown in Figure 15 8 The variables and layouts displayed within the Data Collection window are defined under Display Settings The Data Collection window displays the raw data of each variable in graphic form along with a numerical display of the in...

Страница 294: ...igure 15 9 allows the user to define which variables should be displayed during data collection and the number of columns used for the layout Figure 15 9 Display Settings Information 15 4 2 The information box supplied during data collection shown in Figure 15 10 gives the user key information regarding sampling rate duration and number of samples collected ...

Страница 295: ...2D 3D with Pressure Sensor The variables displayed during data collection will not affect the data export The exported file will include all available variables as determined by the probe assembly configuration irrespective of the variables the user has chosen to display Properties associated with the variables and numerical calculations performed on the raw data collected are defined in Table 15 ...

Страница 296: ...0 Computed Amplitude Beam1 Amplitude of Beam 1 Computed from SNR and Noise of Beam 1 cnts 0 Computed Amplitude Beam2 Amplitude of Beam 2 Computed from SNR and Noise of Beam 2 cnts 0 Computed Amplitude Beam3 Amplitude of Beam 3 Computed from SNR and Noise of Beam 3 cnts 0 Noise Level Beam1 Noise level of Beam 1 cnts 0 Noise Level Beam2 Noise level of Beam 2 cnts 0 Noise Level Beam3 Noise level of B...

Страница 297: ... the FlowTracker2 Lab AdV application are listed in Table 15 3 Table 15 3 FlowTracker2 Lab Adv Hardware Components Component Description 2D side looking 10 MHz ADV probe assembly FlowTracker2 2D side looking 10 MHz ADV probe assembly 2D 3D side looking 10 MHz ADV probe assembly FlowTracker2 2D 3D side looking 10 MHz ADV probe assembly FlowTracker2 probe assembly sensor extension cable The FlowTrac...

Страница 298: ...pply AC DC Power Supply 12VDC 20W 1 67A RS232 Cable RS232 Cable Data transmission between FlowTracker2 probe assembly and PC Tablet can be impacted if the RS232 cable length exceeds the maximum recommend length Performance of FlowTracker2 Lab ADV application was verified using 8 5m extension cable and 33 3m RS232 cable RS232 to USB Converter RS232 to USB Converter ...

Страница 299: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 298 Appendix A Software Flow Diagram ...

Страница 300: ...SonTek a Xylem brand FlowTracker2 User s Manual January 2019 299 ...

Страница 301: ...of channel with uniform cross section and slope 10 times section width c Flow in the channel should be confined to a single well defined channel with stable banks d Avoid a site with wide shallow sections or secondary side channels e Bends upstream of site should be avoided as this will result in angular flow towards tagline f Steep slopes upstream should be avoided as this could result in high ap...

Страница 302: ...1 𝑑𝑛 1 2 𝑏𝑛 1 𝑏𝑛 0 5 𝑑𝑛 1 𝑑𝑛 1 2 𝑑𝑛 𝑑𝑛 2 𝑣𝑛 𝑣𝑛 2 Open Water Items to be field in the field survey Items to be filled after survey Stn no Dist from Bank m Depth m Velocity Velocity Station Area Disc m 3 s When going When back Average Meas depth Sound no Meas Time s Vel m s Ave m s Ave Depth Ave Width Area m 2 Sum m 2 1 st 2 nd Ave 0 0 0 00 0 00 0 00 0 58 2 00 1 16 1 2 1 15 1 16 1 16 0 23 9 25 0 25 ...

Страница 303: ...om bridges culverts Road Signs 2 Required when working from bridges culverts Sun Hat 1pp Large brim hat Rain Jacket 1pp Only to be used when raining Wader or Water Boots 1pp Select type of water proof boots based on the water depth Life Jacket 1pp When entering water an approved life jacket must be worn First Aid Kit 1 Require first aid certificate Sunscreen 1 Insect repellent 1 Midge and Mosquito...

Страница 304: ...LOWING PRODUCTS Equipment Type Flow Meter Model FlowTracker 2 Product Names FlowTracker 2 FlowTracker 2 Lab ADV CONFORMS TO THE FOLLOWING EUROPEAN UNION COUNCIL DIRECTIVES EMC DIRECTIVE 2004 108 EC TEST SPECIFICATIONS BASIC STANDARDS EN 61326 1 2013 EN 55011 IEC 61326 1 2012 EN 55022 FCC 47 CFR PART 15 SUBPART B EN 55032 FCC 47 CFR PART 18 EN 61000 3 2 ICES 003 ISSUE 4 EN 61000 3 3 EN 61000 4 2 EN...

Страница 305: ...with respect to exemptions permitted in Annex IV section 14 15 of the RoHS Directive the application of lead in single crystal piezo electric materials for ultrasonic transducers is exempted from the restriction in Article 4 All other components comply with the RoHS Directive WEEE DIRECTIVE 2012 19 EU BATTERY DIRECTIVE 2006 66 EC RADIO EQUIPMENT DIRECTIVE RED 2014 53 EU SAFETY CERTIFICATION IEC 61...

Страница 306: ...Settings 41 Data Collection Window 117 154 Data Files 27 Data Management 110 Delete Station 118 119 155 156 Deleting 118 155 Depth 76 Depth Only 74 Desktop Software 178 Determining Mean Station Velocity 72 Determining Mean Velocity 79 Device Configuration 24 29 Diagnosing Measurements with Beam Check 97 Disabled 36 Discard Measurement 146 171 Discharge 40 Discharge Calculation Methods 67 121 122 1...

Страница 307: ...entage Full 57 Ping 19 Ping Rate 19 Point Velocity Measurement 126 133 156 161 Post Measurement Requirements 109 Practical Salinity Scale 42 Pre Measurement Diagnostics 106 Predefined Languages 29 Pressure 61 Pressure Sensor 64 Probe 17 Probe cable 17 probe configurations 224 Probe Mounting Bracket 181 Probe Offset From WR Bottom 37 Probe orientation 226 Properties 37 41 42 45 47 51 53 54 63 122 1...

Страница 308: ...52 System Information 26 System Maintenance 65 System Operation 21 T Temperature 20 43 Temperature Raw Data 60 Temperature sensor 18 Template Functions 40 Template Main Screen 39 Template Name 39 Templates 38 The Doppler Shift 217 Tilt Angle Warning 46 Tilt Raw Data 60 Timing of Warning Messages 94 Top banner 23 Transducers 183 transmitter 218 Transmitter 18 U Units 31 Units System 31 Upgrading AD...

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