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Manual – Starflow QSD Model 6527B and 6537A

Unidata Manual - 6527B and 6537A Starflow QSD User Manual 08 05 2023.docx

Page 105

17.10.

Measuring Turbulent Velocities

In higher bed slope streams, wide and multiple peaks may be displayed because of the
complex moving landscape presented to the Starflow QSD. The fact that many repeats of
similar velocity histograms are seen indicates that the different velocity components seen
are valid. How to interpret such signals is the issue.

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Содержание Starflow QSD 6527B

Страница 1: ...installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interfe...

Страница 2: ...27 11 2019 doc 27 11 19 IM CB Unidata Manual 6527B and 6537A Starflow QSD User Manual 17 01 2020 docx 17 01 20 IM Update EC Specs DM Unidata Manual 6527B and 6537A Starflow QSD User Manual 30 03 2020...

Страница 3: ...Physical 10 3 11 Instrument Wiring Table 11 4 Operating Principles Measured Parameters 13 4 1 Flow Velocity Measurement 13 4 2 Water Depth Measurement Ultrasonic 14 4 3 Water Depth Measurement Pressur...

Страница 4: ...are Installation 47 10 Starflow QSD Scheme Management 55 10 1 Scheme Editor 55 10 2 Settings 57 10 3 Instruments 58 10 4 Flow Measurement Extension 60 10 5 Overview of Creating a Flow Scheme 61 10 5 1...

Страница 5: ...el Characteristics Affecting the Signal 101 17 7 The Nature and Location of the Reflectors in the Water 102 17 8 Velocity Variations Due to Cross Section Changes 103 17 9 Measuring Unexpected Velociti...

Страница 6: ...r rates To set the Starflow QSD to either SDI 12 mode 0 or Modbus mode 5 1 1 Operation Mode Configuring using SDI 12 protocol 0 SDI 12 NOTE 5 5 second Modbus scan update or as per how often the Modbus...

Страница 7: ...P techniques the Starflow QSD can perform in a wide range of environments It is used to measure flows and water conductivity 6537A in pipes channels and small streams It can operate in a range of wate...

Страница 8: ...4I 20 20W Solar Recharge Panel Mount Model 6702S Starflow QSD Weatherproof Enclosure Model 6705A Small Expanding Clamp SS expanding turnbuckle and band clips 100mm wide 100mm long 50mm expansion Use i...

Страница 9: ...nal velocity capability set using configuration tools Accuracy Typical 1 Resolution 1 mm s 3 2 Depth Ultrasonic Range 20mm to 5000mm 5m Accuracy 1 of the full scale Resolution 1 mm 3 3 Depth Pressure...

Страница 10: ...3 8 Communications SDI 12 SDI 12 v1 3 Connection Single cable up to 50 metres long standard fitment is 15m Maximum cable 60m defined by SDI12 org RS 485 Modbus RTU Connection Single cable up to 300 me...

Страница 11: ...SD Barometric Reference module is connected the instrument will automatically handle the barometric correction and report the actual water level instead of the water head plus atmospheric pressure Sup...

Страница 12: ...QSD barometric Connection Diagram There may be a small pressure offset when the sensor is first installed due to different barometric conditions compared to the factory This can be set to zero by appl...

Страница 13: ...l is transmitted into the water flow and echoes reflections returned from particles suspended in the water flow are received and analysed to extract the Doppler shift velocity The transmission is cont...

Страница 14: ...readings as it will not be able to resolve the correct reflections in these cases the Pressure depth sensor will need to be used 4 3 Water Depth Measurement Pressure Sites where the water contains lar...

Страница 15: ...re the conductivity of the water A linear four electrode configuration is used to make the measurement A small current is passed through the water and the voltage developed by this current is measured...

Страница 16: ...bove 500 Above 500 gives unreliable velocity data 4 9 Received Signal Strength Indicator RSSI The RSSI channel is the measurement of the received signal power RSSI values may change significantly for...

Страница 17: ...standard SDI 12 V1 3 sensor Measurement commands M C return atttn n response with ttt indicating the delay until measurements are ready and n n indicates the number of parameters returned A Service Re...

Страница 18: ...ilt 12 Pressure Depth mm 123 123mm 13 Barometric Reference mm 10120 10120mm 70 Conductivity UC S cm 2350 2350 S cm 72 Conductivity TC S cm 2350 2350 S cm 5 1 2 Measurement Command aM 6527B 6537A Starf...

Страница 19: ...seconds and 4 parameters available 0D0 0 213 1343 123 234 CR LF Example 3 aM2 Firmware 20 and above Parameter Description Units Example Meaning 1 Pressure Depth mm 123 123mm 2 Barometric Reference mm...

Страница 20: ...e Parameter Description Units Example Meaning 1 RSSI signal level no units 66 66 no units 2 Signal Spread no units 45 45 no units Start Measurement Command aM5 example 0M5 00052 CR LF Measurement read...

Страница 21: ...depth offset to 100mm Example 3 Change Send 0X7 100 CR LF Response 0 100 CR LF Set pressure depth offset to 100mm 5 1 3 3 Enable Velocity Direction Example Change negative and positive velocity direc...

Страница 22: ...flow QSD can be directly connected to the Unidata NRL Logger range using SDI 12 A scheme can then be set up using the StarlogV4 software to record the parameters from the QSD and to enter the channel...

Страница 23: ...537A Starflow QSD User Manual 08 05 2023 docx Page 23 3 Scroll down and double click SDITASK Instrument and it will be added to the window on the right 4 Double click on the 6526 EXT instrument to add...

Страница 24: ...nidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 24 5 Double click on the SDI Task Table 1 Instrument in the right window 6 Click the Add Sensor button scroll down in the li...

Страница 25: ...ual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 25 7 Set to Log Interval and set Read Time to 10s The Starflow QSD will take 5s to take measurements make sure the Read Time is a mult...

Страница 26: ...5 2023 docx Page 26 9 Open the Flow extension instrument and set up the channel profile select the Input Depth channel to be Ultrasonic OR Pressure Depth depending on the site installation and select...

Страница 27: ...ysical links requirement RS485 low power 2V three wire A B signals ground differential half duplex at 9600bps support up to 1000m cable at 19200bps up to 500m cable at 115Kkps up to 100m cable and it...

Страница 28: ...byte 1 247 Function Code 1 byte 0x03 Function Code 1 byte 0x03 Data Address 2 bytes 0 to 0xFFFF Byte Count 1 byte Register Count 2 bytes Data Payload N bytes CRC 2 bytes CRC 2 bytes Byte count 2 Regi...

Страница 29: ...c mm 0004 1 Read only sshort CW Water Velocity mm s 0005 1 Read only ushort RSSI 0006 1 Read only ushort Signal Spread 0007 1 Read only ushort EC Conductivity Un Corrected 0008 1 Read only ushort EC H...

Страница 30: ...C 05 3F 1343 Battery 1343 x 0 01 13 43 V 00 8D 141 Water depth Ultrasonic 141 mm 00 55 85 CW water Velocity 85 mm s 00 10 16 RSSI 16 00 18 24 Signal Spread 24 Note Refer to the Starflow QSD Modbus su...

Страница 31: ...6D D7 85 86 44 Receive 01 06 00 6D D7 85 86 44 5 2 6 3 Enable Velocity Direction Example 1 Change Enable negative velocity direction Send 01 06 00 E2 00 01 E8 3C Receive 01 06 00 E2 00 01 E8 3C Examp...

Страница 32: ...flow QSD can directly connect to the Unidata NRL Logger range using SDI 12 A scheme can then be set up using the StarlogV4 software to record the parameters from the QSD and also to enter the channel...

Страница 33: ...37A Starflow QSD User Manual 08 05 2023 docx Page 33 3 Scroll down and double click the MODBUS Instrument and it will be added to the window on the right 4 Double click on the 6526 EXT instrument to a...

Страница 34: ...Manual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 34 5 Double click on the MODBUS 1 Instrument in the right window...

Страница 35: ...anual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 35 6 Scroll down in the Name list and select the Unidata 6527 6537 QSD and click O...

Страница 36: ...set Read Time to 10s The Starflow QSD will take 5s to take measurements make sure the Read time is a multiple of the scan rate 8 Open the Flow extension instrument and set up the channel profile selec...

Страница 37: ...anual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 37 9 Open the Log Buffer and enable the log channels required if your instrument model is 6527 then there will be no conductivity re...

Страница 38: ...water Generally the more material in the water the better Starflow QSD generally works well in clean natural streams but problems may be encountered in extremely clean water such as snow melt No exces...

Страница 39: ...ng In culverts the sensor can be mounted on a stainless steel band that is slipped inside the pipe and expanded to lock it in position In open channels special mounting brackets may be required The Mo...

Страница 40: ...he instrument s size Do the following 1 If the inside circumference of the pipe is ACCURATELY known then cut the band assembly to this length LESS 25mm for fitting clearance Circumference length Diame...

Страница 41: ...ully closed bands and joiners altogether as shown 5 Position and tighten Starflow QSD and band the bolt the Starflow QSD mount to the band 6 Fold the band into a circle to easily fit inside the pipe a...

Страница 42: ...n tree branches and sharp bends in the channel Also beware of areas where the water is turbulent and choose a site that is free from standing waves and whirlpools These will reduce the effectiveness o...

Страница 43: ...to the above diagram for the areas where the ultrasonic eyes and conductivity sensors reside These areas must be kept clean The front face of the instrument and the area above the depth Piezo should...

Страница 44: ...d inaccurately and therefore the recorded depth can be recorded incorrectly 8 2 Instantaneous Versus Averaged Velocity When you observe Starflow QSD velocities they will be seen to vary by 10 or more...

Страница 45: ...e area of flow will have been seen by Starflow QSD and contributed to the logged velocity In larger channels only the area adjacent to Starflow QSD will be seen and the relationship will depend on how...

Страница 46: ...h temperature and between fresh and seawater Temperature C Fresh Water Sea Water 0 1402 1449 5 1426 1471 10 1447 1490 15 1466 1507 20 1482 1521 25 1497 1534 30 1509 1545 35 1520 1555 The velocity of S...

Страница 47: ...ghts to install this software package Please consult your IT professional if you are unsure Use the supplied software disk along with your software key for a successful installation The Software Key c...

Страница 48: ...ser Manual 08 05 2023 docx Page 48 Once the download is complete locate and run the StarlogV4 exe file Ensure you have administrator rights before running this file Press Run when you see the dialog b...

Страница 49: ...and 6537A Starflow QSD User Manual 08 05 2023 docx Page 49 Click on I accept the agreement and press Next Do NOT change the path StarlogV4 needs to be at this location Do NOT install into the Program...

Страница 50: ...Manual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 50 Select program shortcuts as required...

Страница 51: ...l 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 51 Press the Install button once you have selected your start icon options Click Finish once the installa...

Страница 52: ...time Starlog will ask you for the path of any Legacy Starlog Version 3 files Leave all these blank This screen allows you to install one of the following Starlog 4 Starflow QSD Instrument only Starlo...

Страница 53: ...ser Manual 08 05 2023 docx Page 53 Because this installation will be for the Starflow QSD Instrument Only Supplied free with the purchase of a Starflow QSD Instrument then you will need to select the...

Страница 54: ...r Software for Starflow QSD disk that came packaged with your Starflow QSD instrument Press Next when done Once the Code Key has been successfully entered you will get a confirmation window as shown a...

Страница 55: ...be displayed The tabs at the top allow you to view all your version 4 schemes and all your version 3 schemes if you have any Select a scheme by double clicking the link with its name 10 1 Scheme Edito...

Страница 56: ...7A Starflow QSD User Manual 08 05 2023 docx Page 56 When the Scheme Editor is open select New Scheme from the File menu or click the new icon on either of the toolbars A list of data loggers will appe...

Страница 57: ...s then a 5 second scan rate implies 15min 60sec 5 180 samples If you don t need that many samples you could increase the scan rate to maximise battery life Another limit the scan rate imposes is on th...

Страница 58: ...Instruments Click on the Instruments icon The Instrument Library lets you select from major groups of instruments When you select an Instrument Library all the instruments in the library relevant to t...

Страница 59: ...add the Starflow QSD LCD Module instrument to your scheme 1 Select 6526 EXT Starflow QSD flow extension 2 Click the Add button to add the instrument to the scheme To remove an instrument from your sch...

Страница 60: ...pth D Water depth above the Starflow QSD unit Units mm Velocity V The average median velocity of water in the channel measured by Starflow QSD Units mm s Scan Rate SR Frequency of Starflow QSD measure...

Страница 61: ...Determine the dimensions of the channel 2 For open channels create a Cross Sectional Area in the Flow extension instrument which has already been added in the scheme editor and enter the parameters of...

Страница 62: ...tarflow QSD User Manual 08 05 2023 docx Page 62 3 The table type can also be a pipe in this situation the pipe dimensions should be entered 4 In the case of a User Defined Area Rating Table select the...

Страница 63: ...n ovoid pipe Create a text file listing measurements Nominate this file in the scheme s User Rating file 10 5 2 Partially Filled Pipe There are four parameters needed to define a pipe installation Ran...

Страница 64: ...l 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 64 10 5 2 1 Pipe Example 1 The pipe is 1 8m in diameter A Starflow QSD unit is mounted at the bottom No s...

Страница 65: ...65 10 5 2 2 Pipe Example 2 The pipe is 900mm in diameter A Starflow QSD unit is mounted 100mm up from the bottom and there is 75mm of silt in the pipe Note that the Table Range was set to 1 to give i...

Страница 66: ...the maximum depth of the channel There are two ranges 2m and 5m Define the smallest maximum depth for the channel that is compatible with your Starflow QSD as this will give the best results For exam...

Страница 67: ...67 10 5 3 2 Open Channel Example 1 This Open Channel is a V Notch shape which is 2m wide and 1 5m deep A 2 metre depth range Starflow QSD unit is mounted at the lowest point of the notch The Cross Sec...

Страница 68: ...mple 2 This Open Channel is a pre formed two stage Rectangular Channel which is 3 metres wide and 1m deep with a 1m x 300mm secondary channel in the centre The Cross Sectional Area File OCEX2 XAC is s...

Страница 69: ...ocx Page 69 10 5 3 4 Open Channel Natural Stream Example 3 This Natural Stream is 3 metres wide with the shape illustrated below The Cross Sectional Area File is shown below 0 0 500 1000 1000 1000 120...

Страница 70: ...le is a text file with 1 000 entries spread evenly over the table range as specified in the scheme representing the cross sectional area for each depth For example if the table range is 2m 2 000mm the...

Страница 71: ...al channels available for logging e g Depth Velocity Temperature Battery Spread Samples you will need to make sure their entries on the Internal Channels tab are ticked Please note that Starflow QSD i...

Страница 72: ...y it This can be useful if you have something with a limited number of inputs such as a Starflow QSD but would prefer to have all data at a site logged by a single logger You could configure the Starf...

Страница 73: ...Settings and then Configure QSD 4 Click on the Configure SDI 12 button 5 Using the dropdown buttons select which channels you would like to configure for SDI 12 output these can be internal channels...

Страница 74: ...k the Return button and then Exit 11 2 Configuring the Starflow QSD for Modbus RTU When the Starflow QSD is a Modbus sensor other Modbus recorders or PLCs can access and log data sensed by it This can...

Страница 75: ...and 6537A Starflow QSD User Manual 08 05 2023 docx Page 75 To set a Starflow QSD as a Modbus sensor as well as a logger 1 Click on the Sonic Icon 2 When the SONIC window appears click on the Connect b...

Страница 76: ...onfigure SDI 12 button 5 Click on the SDI 12 parameters button 6 Using the dropdown buttons select which channels you would like to configure for Modbus output these can be internal channels indicated...

Страница 77: ...Manual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 77...

Страница 78: ...except for Larger Flow parameters Flow Rate Flow and Total Flow are configured as a 32 bit integer the Flow Rate will also require a multiplier of 0 001 and other flow parameters have a multiplier of...

Страница 79: ...79 7 Click Return button and then Exit 11 3 Configuring Starflow QSD Settings The Starflow QSD Settings allows the user to modify the operation of the Starflow QSD it contains very important factors...

Страница 80: ...Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 80 1 When the SONIC window appears click on the Connect button 2 When connected Click on Settings and...

Страница 81: ...is will provide a zero value reading if the Ultrasonic level is below the Minimum operating depth 40mm if not enabled it may provide sporadic results if the depth is too low U Offset mm This is the of...

Страница 82: ...imum signal spread setting Enable ve reverse velocity This will enable velocity in both directions Usually used in tidal flows Enable over range limit The velocity can be configured for multiple range...

Страница 83: ...1 3 2 Instrument Channels The following channel logging options are available however some instrument channels may not support all of them for example temperature cannot be totalised Option Descriptio...

Страница 84: ...maximum log interval is 65535 times the scan rate For example if you set the scan rate to 1 second the maximum logging interval is 65535 seconds or 18 hours 12 minutes 15 seconds If you want a log in...

Страница 85: ...Manual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 85 11 3 4 Saving the Scheme...

Страница 86: ...efore it will immediately save it If you ve never saved the scheme before the dialog shown below will appear You can get the same dialog at any time by selecting Save Scheme as from the File menu Ente...

Страница 87: ...AMMING STARFLOW QSD Loggers are programmed from the main screen by clicking on the Program icon shown to the right You will be asked to confirm before the programming will proceed Clicking OK will pro...

Страница 88: ...l 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 88 13 TEST MODE Test Mode is used to check the status of the logger and to monitor its logging progress To enter Test Mode click on the...

Страница 89: ...scheme that has been programmed into the logger The scheme logging parameters can be checked as highlighted below on the right side of the screen live logged data can be viewed 13 1 Scheme Channels T...

Страница 90: ...nto a CSV comma separated value file on your computer CSV files can be directly opened in Excel and are also a common format supported by other software Hydsys Unloaded CSV data files are stored in a...

Страница 91: ...Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 91 Incremental Unload This unloads all data logged since the last time you unloaded the logger If you ve never unloaded the logger...

Страница 92: ...Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 92 When complete the newly unloaded data will be added to the data file location where the software has been installed You can vie...

Страница 93: ...ta you want to view 15 1 Starlog V4 CSV Files These files are grouped by the scheme The following screenshot shows that there is a scheme called Starflow QSD which has available data from its Main Buf...

Страница 94: ...by clicking and dragging out the rectangular area you want to zoom in to Reset the zoom by right clicking on the graph The zoom level is also reset when you make a change to the visibility of any chan...

Страница 95: ...rruption Notepad doesn t try to interpret the data so you can scan through it and manually correct any anomalies 15 2 4 Opening with Excel Opening your data in Excel gives you a lot more power to disp...

Страница 96: ...Manual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 96...

Страница 97: ...there is a power outage for 4 hours or less this will allow the unit to continue logging data with the correct date and time once the power has been restored This will be shown in the data with a dat...

Страница 98: ...you may encounter using data loggers Each function is explained below 17 1 Velocity Trace This facility helps you to learn more about using Starflow QSD for flow measurement It lets you look at the v...

Страница 99: ...ift of the peak of the histogram in mm s is indicated by the green line The screen will cycle refreshing the plot and summaries each time a new set of samples are acquired The following examples are s...

Страница 100: ...the Doppler as a frequency shift Some of these factors are inherent in the method In flowing channels there is always a range of different velocities present but even in perfect conditions with all w...

Страница 101: ...l in motion The returned signals are sometimes echoes of echoes vague and ambiguous and can be misinterpreted by the measuring circuits resulting in an incorrect Doppler shift These result in frequenc...

Страница 102: ...pler shifts from anything acoustically reflective in the signal beam It cannot discriminate where the echo is coming from and the bigger closer reflectors will generate a stronger signal than smaller...

Страница 103: ...section introduce different velocity regimes within the view of the Starflow QSD the histogram is distorted At low flows in clean streams the beam can be reflected for some distance and see unexpecte...

Страница 104: ...produce Doppler shifts that are not directly related to the water velocity The field of view of the Starflow QSD can extend for at least 5m along the beam in clean water and reduces as the sediment l...

Страница 105: ...ng Turbulent Velocities In higher bed slope streams wide and multiple peaks may be displayed because of the complex moving landscape presented to the Starflow QSD The fact that many repeats of similar...

Страница 106: ...city to the water In shallow and clean water the Starflow QSD can clearly see the surface As the ripples move they present a varying effect on the Doppler signal At times the ripples will be positione...

Страница 107: ...nditions may be seen The RSSI will be reduced As velocities slow it takes the Starflow QSD longer to measure each Doppler shift At shallow depths the volume of water from which to acquire signals is r...

Страница 108: ...h transducer will only measure depths that are 40mm above the ultrasonic eye and the pressure transducer will measure down to 0mm If it is important that these very low flows be measured then the Star...

Страница 109: ...ear Completely buried sensors result in the signal collapsing The signal does not appear to escape from beneath the sand to interrogate the water above The following histogram is typically seen 17 15...

Страница 110: ...15 2 2 Disruption of the Flow Pattern by Debris Larger debris in the vicinity may affect the logged values by changing the velocity distribution in the field of view of the sensor The flow distributi...

Страница 111: ...lock the path to either sensor blanketing any signals Zero signals will be dominant however those below 20 mm sec are discarded The histogram will be distorted and have a characteristic vertical face...

Страница 112: ...ction allows you to upgrade the internal firmware of the Starflow QSD logger Upgrade Firmware Click to upgrade You will then need to select the file which will only be provided by the Unidata support...

Страница 113: ...Manual Starflow QSD Model 6527B and 6537A Unidata Manual 6527B and 6537A Starflow QSD User Manual 08 05 2023 docx Page 113...

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