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Page 94                                                                          

June 2022 – TD 320 OPERATING MANUAL – TURBIDITY SENSOR 4296

 

 

 

 

8.3.2 

Total Suspended Sediment by Acoustic Doppler Measurements 

The U.S. Geological Survey has started using acoustic Doppler meters to determine continuous 

sediment loads estimates. As the Doppler meter pulses sound through the water, the frequency 

beams will bounce off suspended particles in the water. While these meters are generally used to 

measure water velocity, the returned beams, known as backscatter, can be used to indicate 

suspended sediment concentrations. This method requires correction for any sound absorption 

and beam spread. While it is not as accurate as a TSS mass measurement, and while its 

performance is still under study, the use of an acoustic Doppler meter opens the door to the 

possibility of continuous suspended sediment estimates. 

 

8.4 

FTU versus TSS 

 

Use Aanderaa calculation sheet to enter relation between FTU and Total Suspended Solids (TSS) 

obtained from water sampling – filtering-drying-weighing. 

The sheet calculates new coefficients which can be copied and sent to the sensor for absolute 

measurements in mg/l 

 

Template is available at  

 

 

 

 

 

 

Figure 8-2: Template for calculating relationship between TSS and FTU 

Содержание Aanderaa 4296

Страница 1: ...TD 320 OPERATION MANUAL TURBIDITY 4296 JUNE 2022 TURBIDITY SENSOR 4296...

Страница 2: ...e 2022 Including TSS calculation and reorganizing chapters Copyright Aanderaa Data Instruments AS Contact information Aanderaa Data Instrument AS PO BOX 103 Midttun 5843 Bergen NORWAY Visiting address...

Страница 3: ...3 1 9 Sensor Properties 14 1 9 1 Factory Configuration 14 1 9 2 Deployment Settings 15 1 9 3 System Configuration 16 1 9 4 User Maintenance 17 1 10 Sensor parameters 18 1 11 Sensor integrated firmware...

Страница 4: ...e collector 52 4 3 1 Connected via SeaGuardII 52 4 3 2 Connected via SmartGuard 52 4 4 Establish connection 52 4 4 1 Control Panel 55 4 5 Changing Values 57 4 6 Deployment settings 60 4 6 1 Site Info...

Страница 5: ...test connected to SEAGUARD with display 88 Theory of Operation 90 8 1 1 Light Scatter 91 8 2 TSS 93 8 3 Total Suspended Solids Measurement Methods 93 8 3 1 Total Suspended Solids and Suspended Sedimen...

Страница 6: ...ocols at the RS 232 interface where the Smart Sensor Terminal protocol is a simple ASCII command string based protocol and the AADI Real Time is an XML based protocol Turbidity Sensor 4296 fits direct...

Страница 7: ...perature Form 993 Calibration Certificate for Turbidity Sensor D 424 Data sheet for Turbidity Sensor 4296 Abbreviations ADC Analogue to Digital Converter AiCaP Automated idle line CAN bus Protocol a m...

Страница 8: ...cattered light is picked up by a sensitive photodiode and this signal is then conditioned linearized and converted to data in engineering unit FTU In addition to turbidity the sensor also measures wat...

Страница 9: ...s but may also be used on cable Standard version has AiCaP and RS 232 output Please note that the lemo plug used for this sensor are not a 1 to 1 plug This means that e g pin 1 on sensor are connected...

Страница 10: ...en in Table 1 1 Signal Description CAN_H CAN bus line dominant high NCG Node Communication Ground NCR Node Communication Request Gnd Ground Positive supply V 5 14V positive supply NCE Node Communicati...

Страница 11: ...Aanderaa logger using AiCaP a real time RS 232 cable or a RS 232 configuration cable 1 5 1 Configure sensor using RS 232 configuration cable Connect your sensor to one of the COM ports on your PC If...

Страница 12: ...plug to your PC USB port and then your sensor to the 9pin DSub Figure 1 4 Set up and configuration cable 3855 Table 1 3 Cable 3855 pin configuration Signal name Sensor plug 9 p D Sub USB TXD 1 2 RXD...

Страница 13: ...alue stored as interval To change the value you might send the following command Set Interval 30 This will change the value for this property to 30 seconds Save Always end with save to store setting i...

Страница 14: ...on about Software and hardware settings Production Service and Calibration dates Property Type No of elements Use Category Access Protection Read Write Product Name String 31 Aanderaa Product name FC...

Страница 15: ...No of elements Use Category Access Protection Read Write Interval Float 1 Sampling Interval in seconds DS No No Location String 31 Set the location Geographic Position String 31 Set the geographic pos...

Страница 16: ...n set to no the sensor will sample at the interval given by the Interval property when set to yes the sensor will wait for the Do Sample command Enable Text BOOL 1 Enable text when set to no the start...

Страница 17: ...400 4800 9600 57600 115200 1 UM High High Flow Control ENUM 1 RS232 flow control None or Xon Xoff Enable Comm Indicator BOOL 1 Enable the Communication Sleep and Communication Ready indicators Comm Ti...

Страница 18: ...Bridge To enable these parameters select Enable Rawdata Yes Calibration coefficients are stored in the sensors flash and updated when recalibrated If raw data are not needed the user can select to tu...

Страница 19: ...eraa info xylem com for guidance 1 13 Manufacturing and Quality Control Aanderaa Data Instruments products have a record for proven reliability With over 50 years experience producing instruments for...

Страница 20: ...system Note This chapter describes the configuration of the Turbidity Sensor 4296 when connected to a SeaGuard with display Refer TD262a for a thorough description of how to configure the SeaGuard Ins...

Страница 21: ...he hole is clean and smooth and check that the O rings at the sensor foot are free from dust and particles and greased with silicon grease Align the orientation pin in the sensor foot with the orienta...

Страница 22: ...r in one of the sensor positions turn power on and open menu by pressing the Menu button in the lower left corner Four submenus contain properties for the Turbidity sensor Administrative Tools Sensor...

Страница 23: ...fer to SeaGuard Platform Operating Manual TD262a 2 3 2 Sensor Identification Open Sensor Identification from the main Menu Sensor Identification is a list of all sensor connected to the logger You may...

Страница 24: ...he Sensors tab to continue The System Configuration sensor tab holds a list of all Analog and AiCaP sensors connected to the logger Select the newly installed Turbidity Sensor that should appear in th...

Страница 25: ...chapter 1 9 Enable Temperature in Deg C Enable TSS enables the calculation of TSS based on the coefficients stored in TSSCoef See chapter 8 1 for more info about this measurement We recommend that yo...

Страница 26: ...Select the Sensors tab to continue The Sensors tab holds a list of all Analog and AiCaP sensors connected to the logger Select the newly installed Turbidity Sensor that should appear in the list of se...

Страница 27: ...ts Location Geographic Position Vertical Position Reference The values of these settings are not used in any calculations To add information to one of these properties select the property press View E...

Страница 28: ...a submenu under the Administrative Tools menu Open Administrative Tools from the Menu button Select User Maintenance In User Maintenance you will find two tabs Instrument Sensors For more information...

Страница 29: ...the Run Wizard button that will run you through all the individual sensor configurations In User Maintenance you find properties that are password protected and are set altered by the advanced user no...

Страница 30: ...ed renaming the sensor can facilitate analyzing data The text is by default set to the product name followed by product number and serial number e g Turbidity Sensor 4296 39 Press Next to continue wit...

Страница 31: ...oef is only for factory use and therefor write protected TSSCoef are used to convert the sensor reading to TSS based on local samples collected and filtered See chapter 8 1 for more info Press Next to...

Страница 32: ...all and start the AADI Real Time Collector software on your PC For more information about the AADI Real Time Collector refer TD 268 AADI Real Time Collector Operating Manual See chapter 1 5 for more i...

Страница 33: ...ce 3 1 2 Establish contact with the sensor The new connection will then be available in the AADI Real Time Collector connection list Click on the line with the new connection to highlight this connect...

Страница 34: ...cannot connect check the cable connection and make sure that you have power to the sensor If the sensor is running on a fast interval this connection can be a bit slower 3 2 Control Panel In the Contr...

Страница 35: ...n it might cause a change in the Fixed Interval so we recommend always checking the interval after configuration is finished The Script is not used for this sensor 3 2 2 Device Configuration Click on...

Страница 36: ...y ID 1 Descr Product Number Type VT_BSTR Access R1W4 4296 Property Property ID 2 Descr Serial Number Type VT_I2 Access R1W4 12 Property Property ID 6 Descr SW ID Type VT_BSTR Access R1 1940007 Propert...

Страница 37: ...le in Figure 3 10 where the text for Location has been changed The value is not changed before you have finished the full process If you press Cancel or turn of the power then the changes will not be...

Страница 38: ...sensor Flash If necessary a reset will be executed Do not switch off before the entire process is completed When the updating process is finished a confirmation will show up Press Finish to continue...

Страница 39: ...IDITY SENSOR 4296 Page 39 Some changes may require a device reset to take effect Press Yes to continue Some changes may require that you stop the recorder or refresh the status in Record panel Figure...

Страница 40: ...terval The settings under Site Info are only used as info and will not influence on the measurement or sensor behavior See chapter 3 4 1 to 3 4 2 for an explanation of each property All parameters are...

Страница 41: ...sing software unless a GPS input is connected The Properties under Site Info are Location Geographical Position Vertical Position Reference Location is typical the Site name or any name that can be us...

Страница 42: ...output from the sensor The sections are Common Settings Terminal Protocol Output Settings See chapter 3 5 1 to 3 5 6 for a explanation of each parameter Please note that some of the parameters are li...

Страница 43: ...configure the sensor either it is set to AiCaP AADI Real Time or Smart Sensor Terminal but it is not possible to run and log data with AADI Real Time Collector unless the sensor is set to AADI Real Ti...

Страница 44: ...roperties are used If the Enable Polled Mode is enabled then the sensor outputs data when the user system polls for data with a Do Sample command Enable Text and Enable Decimalformat control the outpu...

Страница 45: ...gs are used internally in the calculation independently of this setting The parameters are C1Amp mV Amplitude measurement with C2Amp mV Amplitude measurement with RawTemp mV Voltage from Thermistor Br...

Страница 46: ...need to enter the password that is 1000 for all units And press OK And then select Edit under the User Maintenance If you don t tap the Include User Maintenance box and not enter the password the Use...

Страница 47: ...word protected and are set or altered by a trained user It is not recommended to change properties unless instructed This menu consists of five sessions Mandatory Site Info Serial Port Calibration Sam...

Страница 48: ...factory if this happens The configuration is saved in two sectors in flash memory A flash sector can be corrupted if the power is lost during the saving of new configuration The double flash sector s...

Страница 49: ...ate are 9600 and Flow Control is set to Xon Xoff Enable Comm Indicator is enabling communication sleep and communication ready indicators when set to Smart Sensor Terminal mode indicates that the sens...

Страница 50: ...nd C1R4Coef is calculated after calibration at factory for each of the four ranges C2R1Coef is only for factory use and therefor write protected TSSCoef are used to convert the sensor reading to TSS b...

Страница 51: ...uardII or SmartGuard the sensor needs to be in AiCaP mode 4 2 Installation of the Turbidity Sensor 4296 on SeaGuardII Power should be turned off before connecting the sensor We recommend that you inst...

Страница 52: ...nnection is established 4 3 2 Connected via SmartGuard Connect the USB configuration cable to the USB connector on the left hand side of the SmartGuard and to the PC Install and start the AADI Real Ti...

Страница 53: ...lector the connection list will be emty Click on the New button in the lower left corner to create a new connection NOTE This only need to be done once AADI Real Time Collector will keep the informati...

Страница 54: ...now shown in the AADI Real Time Collector connection list Click on the line with the new connection to highlight the line and then click on the Open Port button The connection to the SeaGuardII SmartG...

Страница 55: ...tart Delayed option The layout of this menu will vary depending on the Recorder status and selections done in the Deployment Settings Multi Group Recorder menu The Fixed Interval is the recording inte...

Страница 56: ...e product name serial number and Software version Under the heading Save configuration to file you can save current settings to a backup file by pressing Save Edit the name and location for your file...

Страница 57: ...ee example where the text for Location has been changed The value is not changed before you have finished the full process If you press Cancel or turn of the power then the changes will not be stored...

Страница 58: ...sensor Flash If necessary a reset will be executed Do not switch off before the entire process is completed When the updating process is finished a confirmation will show up Press Finish to continue...

Страница 59: ...changes may require that you stop the recorder or refresh the status in Record panel Note The screen shots might show minor discrepancies compared to screen shots taken from your sensor due to sensor...

Страница 60: ...cted sensors will show up All AiCaP sensors connected to the bus will automatically show up in the list after power up Double click on the Turbidity Sensor to select the sensor The Deployment Settings...

Страница 61: ...ing software unless a GPS input is connected The Properties under Site Info are Location Geographical Position 1 Vertical Position Reference Location is typical the Site name or any name that can be u...

Страница 62: ...ected to the same Datalogger will show up as selectable items Double click on the Turbidity Sensor to start configuring System Configuration has only one group Output Settings The settings in this gro...

Страница 63: ...this setting The parameters are C1Amp mV Amplitude measurement with C2Amp mV Amplitude measurement with RawTemp mV Voltage from Thermistor Bridge Enable Temperature This setting is used to enable or d...

Страница 64: ...er Maintenance box in the Device Configuration before clicking on the Get Current Configuration button The password is 1000 Under User Maintenance you find properties that are password protected and a...

Страница 65: ...if this happens The configuration is saved in two sectors in flash memory A flash sector can be corrupted if the power is lost during the saving of new configuration The double flash sector saving ens...

Страница 66: ...ef is calculated after calibration at factory for each of the four ranges C2R1Coef is only for factory use and therefor write protected TSSCoef are used to convert the sensor reading to TSS based on l...

Страница 67: ...each Carriage Return Note If using Tera Terminal Pro after setting up the com port according to settings above please select Terminal in the Set up menu and click Local echo also select CR LF for both...

Страница 68: ...Mode AiCaP Version Protocol Version and Config Version In this mode the sensor will not output any measurement since it needs an Aanderaa Datalogger as Master The sensor can be configured for AiCaP u...

Страница 69: ...r will cause the electronics to return to normal operation when the sensor has responded with the character new commands may be entered When communicating with the sensor you must start by pressing En...

Страница 70: ...specific sensor with further instructions 5 6 Passkey for write protection To avoid accidental change of the sensor configuration most of the properties are write protected There are five levels of ac...

Страница 71: ...able commands and properties for the Turbidity Sensor are given in Table 7 1 and Error Reference source not found respectively Command Description Do Sample Execute an turbidity measurement and presen...

Страница 72: ...of the property the product number and serial number of the sensor and finally the value of the property The command name Get followed by a parameter returns the name and unit of the parameter the pr...

Страница 73: ...The Get ConfigXML command outputs all available sensor properties in XML format The Get DataXML command outputs all available sensor parameters in XML format The XML output is a general format shared...

Страница 74: ...d simple ASCII output that is easy to use if you need to transmit the data using communication with limited bandwidth It s then also easy to add other parameters like Temperature by sending Set Enable...

Страница 75: ...ess Enter to start communicating with the sensor press Enter Stop Wait for ack Repeat if necessary et Passkey 1 Set Interval 10 wait for ack Set Mode Smart Sensor Terminal wait for ack Set Enable Slee...

Страница 76: ..._All CRLF Output all property values Get_All Parameters CRLF Output all parameter values Set_PROPERTY V V CRLF Set PROPERTY to V V Set_Passkey V CRLF Set Passkey Save CRLF Store current settings Load...

Страница 77: ...file Set sampling interval to 30 seconds Set Passkey 1 Set Interval 30 Save Get All NOTE The last line Get All reads out available properties for the sensor The first line is a comment line that is d...

Страница 78: ...Output according to which type of logger interface you plan to use Set the Enable TSS Enable Temperature and Enable Rawdata to Yes to include these parameters in the output string Enable TSS enables t...

Страница 79: ...des a set of measured data for every measurement interval If the Enable Polled Mode is enabled then the sensor only outputs data when the user system polls for data with a Do Sample command Set the En...

Страница 80: ...a txt file or to xml files 6 1 1 Enabling file output If your connection is open status is green in the AADI Real Time Collector main menu close the port first to be able to change the file output se...

Страница 81: ...e last message in a single file if you want to continuously store the last message in a single file Click OK in the Advanced Connection Settings window and OK in the Connection Settings window 6 1 2 S...

Страница 82: ...ime mode Data will start logging in the defined directory If it is a txt file the easiest way to view it is in Excel Figure 6 6 gives an example of obtained data file The different parameters are orga...

Страница 83: ...nsor is running the incoming data can be viewed under Connection Logs in the main AADI Real Time Collector menu refer to Figure 6 4 Please note that this window is not automatically open and you might...

Страница 84: ...oint Parameters Previous records or newer records can be viewed by clicking on Previous Entry button or Next Entry button An automatic update to the last data message can be enabled by checking the Al...

Страница 85: ...ata in real time aslong as the sensor is set to AADI Real Time mode and the recorder is running These two tools are located on the start page under Data Visualization Data Visualization is used to sho...

Страница 86: ...a graph format In the Chart Viewer you may select up to four parameters simultaneously You can change the view by right click in the picture Then you get access to zoom data and other control tools Th...

Страница 87: ...f the transmitted signal If severely damaged so that the sensor gives unrealistic readings the sensor need service at the factory Annual recalibration is optimal and recommended by the factory Althoug...

Страница 88: ...rect reading of the sensor the function is mainly used for test purposes Select the Turbidity Sensor from the list and press Start refer Figure 7 2 The next window shows sensor information like the No...

Страница 89: ...interval Press Freeze to temporarily stop the update press Start to restart monitoring Start is the same button as Freeze Press Cancel to stop monitoring The sensor readings should be according to you...

Страница 90: ...isual properties of water based on light scattering and attenuation All three parameters are related to particles in the water column whether directly or indirectly Turbidity is determined by the amou...

Страница 91: ...is fairly symmetrical in all directions The larger the particle becomes however the more light that will be scattered forward away from the light beam Wavelength also affects light scatter In general...

Страница 92: ...However increasing the path length sacrifices measurement range Both the EPA 180 1 and the ISO 7027 methods limit light path length to 10 cm total A decreased path length such as a backscatter based p...

Страница 93: ...a dissolved solid The main difference between total suspended solids TSS and suspended sediment concentration SSC is in the amount of water analyzed After filtering a water sample with a 2 micron filt...

Страница 94: ...uspended sediment concentrations This method requires correction for any sound absorption and beam spread While it is not as accurate as a TSS mass measurement and while its performance is still under...

Страница 95: ...EMC of the sensor EMC filter and protection solutions can be required if used stand alone 9 1 EMC Testing The Turbidity sensor has been tested at an accredited test laboratory to verify that the sens...

Страница 96: ...s included on the memory stick following the sensor All calibration data are stored in the sensor so these certificates is only used to prove the accuracy of the sensor and to document that testing an...

Страница 97: ...June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 Page 97...

Страница 98: ...Page 98 June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 Figure 10 1 Example of Test and Specification sheet...

Страница 99: ...June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 Page 99 Figure 10 2 Example of Temperature Calibration Certificate...

Страница 100: ...Page 100 June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 Figure 10 3 Example of Turbidity Calibration Certificate...

Страница 101: ...June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 Page 101...

Страница 102: ...Page 102 June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 10 1 1 AADI Real Time Collector connection with Windows 10 Please contact aanderaa support xylem com for assistance...

Страница 103: ...ry use only The cable is used to configure a sensor using either AADI Real Time Collector or a Terminal software such as Terra Term If you don t have any COM ports on your computer I can be used in co...

Страница 104: ...either AADI Real Time Collector or a Terminal software such as Terra Term If you don t have any COM ports on your computer I can be used in combination with a RS 232 to USB converter such as Tripp lit...

Страница 105: ...able 4762 is designed for use with RS 232 output Please make sure that the cable is terminated properly before power is switched on Please also note that the lemo plugs are not 1 to 1 but 1 to 8 This...

Страница 106: ...ou want to measure gradients and one sensor is located on the top end plate and the second sensor are mounted in the water column away from the instruments 10 2 5 Patch cable 4999 Patch cable 4999 are...

Страница 107: ...June 2022 TD 320 OPERATING MANUAL TURBIDITY SENSOR 4296 Page 107 10 2 6 Cable 5236 for connection to SmartGuard using AiCaP...

Страница 108: ...cts and services move treat analyze monitor and return water to the environment in public utility industrial residential and commercial building services settings Xylem also provides a leading portfol...

Страница 109: ...raa Data Instruments AS Sanddalsringen 5b P O BOX 103 Midtun N 5843 Bergen Norway Tel 47 55 60 48 00 Fax 47 55 60 48 01 E mail aanderaa info xyleminc com Web www aanderaa com Aanderaa is a trademark o...

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