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Manual – Starflow QSD Model 6527B and 6537A

Unidata Manual - 6527B and 6537A Starflow QSD User Manual 17 01 2020.docx

Page 24

In the diagram above there are settings associated with the “CW (Continuous Wave) Velocity

Settings. These settings control the way velocity readings are returned by the QSD instrument.

Zero Result on RSSI fails - This will return a zero velocity reading if the RSSI value Is below a certain

point. This value is set in the Min RSS(Signal) box.

Zero Result on SPREAD fail - This will return a zero velocity if the SPREAD value is above a certain

point. This value is set in the Max Signal Spread box.

Min Depth (mm) - This will return a zero velocity reading if the depth falls below a certain value.

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Содержание 6527B

Страница 1: ...EN 61000 4 4 1995 EN 61000 4 6 1996 ENV 50204 1995 Any changes or modifications to this equipment not expressly approved by the manufacturer Unidata Pty Ltd could void the user s authority to operate...

Страница 2: ...al Spread 7 3 9 Received Signal Strength Indicator RSSI 7 4 0 Taking Measurements From The Instrument 8 4 1 SDI 12 Operation 8 4 2 Modbus RS485 Operation 12 5 0 Installation 16 5 1 Site Considerations...

Страница 3: ...ues the Starflow QSD is able to 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 water...

Страница 4: ...g Clamp SS expanding turn buckle and band clips 100mm wide 100mm long 50mm expansion Use in pipes up to 600mm 24 in diameter Model 6705B Large Expanding Clamp SS expanding turn buckle and band clips 1...

Страница 5: ...n 1 mm Temperature Range 0 C to 60 C Accuracy 0 5 C Resolution 0 1 C Electrical Conductivity EC 6537A ONLY Range 0 to 200 000 S cm typically 1 of measurement Resolution 1 S cm May be recorded as a 16...

Страница 6: ...2 Red Power Yellow Ground Blue A Modbus Orange B Modbus Grey One Wire Use with Unidata 6515A QSD Barometric Reference Module When Unidata 6515A QSD Barometric Reference module is connected the instrum...

Страница 7: ...oppler To detect water velocity an ultrasonic signal is transmitted into the water flow and echoes reflections returned from particles suspended in the water flow are received and analysed to extract...

Страница 8: ...dicated depth This is corrected by subtracting the atmospheric pressure from the measured depth pressure A barometric pressure sensor is required to do this If the data logger used to read the Starflo...

Страница 9: ...to determine the amount of turbulence affecting the signal quality and used to reject the measurement if the spread turbulence is too great A good flow would return a spread value of around 50 anythi...

Страница 10: ...urns an acknowledge response 3 Extended Command aX is supported see below for details 4 D R1 9 Commands operate the same as a D R0 command 5 M C1 9 Commands operate the same as an M C command 6 MC CC...

Страница 11: ...4 RSSI signal level no units 66 66 no units 5 Signal Spread no units 45 45 no units 10 X Axis Tilt deg 9 9 deg left tilt 11 Y Axis Tilt deg 7 7 deg forward tilt 12 Pressure Depth mm 123 123mm 13 Baro...

Страница 12: ...ater Depth in mm below which Velocity will not be measured Min RSSI signal level below which Velocity will not be measured Max Signal Spread above which Velocity will not be measured 3 Velocity Ripple...

Страница 13: ...4 Enable CW Velocity Measurement Disable CW Velocity Velocity 0 25 CW Velocity 0 if MIN RSSI Retain last measurement 26 Enable ve CW Velocity ve Velocity regardless of direction 27 Enable SOS Temp Cor...

Страница 14: ...l succeed but indicate failure because the existing RS 485 baud rate settings are not preserved across a hard update and have been reset to the default 9600 RS485 Baud rate and Parity setting options...

Страница 15: ...ho of function code sent in master message to the device Data payload 0 N bytes with response from device CRC 2 bytes with a value computed mathematically 4 2 4 Standard Message Format Read Holding Re...

Страница 16: ...only ushort EC Hi Resolution Un Corrected 0009 1 Read only ushort EC Conductivity Temperature Corrected 0010 1 Read only ushort EC Hi Resolution Temperature Corrected 0011 1 Read only sshort Accelero...

Страница 17: ...nused 0230 1 Read only ushort Unused 0231 1 Read Write ushort CW Velocity use half power point 0232 1 Read Write ushort CW Velocity zero above Spread Device Information and Communications Registers Re...

Страница 18: ...resent in the 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 No excessive...

Страница 19: ...hat is slipped inside the pipe and expanded to lock it in position In open channels special mounting brackets may be required The Model 6705 Expanding Band kit allows you to install a Starflow QSD ins...

Страница 20: ...ow QSD mounting clamp 6527M as a guide Use a small pilot drill bit about 2mm then finish with the 5mm bit When drilling stainless steel use a slow speed and high pressure Avoid stopping as the materia...

Страница 21: ...g screenshots are used to explain the functionality of the software and the various parameters that the user is able to change As with all configuration changes care must be taken to mitigate the rami...

Страница 22: ...the software returns an error it may mean that the Device Driver for the interface cable did not install correctly Navigate to the computer Device Manager page and check the status of the device driv...

Страница 23: ...on page for the Starflow QSD instrument This is the page where most of the settings can be directly edited The first area marked in RED is the settings associated with the MODBUS RS 485 settings QSD A...

Страница 24: ...gives the instrument a unique SDI 12 address in case there is more than one SDI 12 instrument on the common SDI 12 address The setting associated with the Ultrasonic depth sensor is shown above When...

Страница 25: ...a equal pressure between the inside and outside of the enclosure The settings above reflect some of the options associated the the pressure depth sensor Zero Result On Failure If this check box is tic...

Страница 26: ...locity readings are returned by the QSD instrument Zero Result on RSSI fails This will return a zero velocity reading if the RSSI value Is below a certain point This value is set in the Min RSS Signal...

Страница 27: ...VE any modified settings using the box Once this button has been pressed a confirmation dialog box will appear You can elect to save the changes or to cancel the operation No changes will take place u...

Страница 28: ...able for standard users You may be asked by Unidata Support Staff to use this option to diagnose particular problems with the QSD Sonic COM Port This is generally set to AUTO but the drop down will li...

Страница 29: ...rum is able to give a visual indication of what the Instrument can See It generates a graph that represents the flow of water passing over the instrument The more defined this graph is will determine...

Страница 30: ...tion of a good Doppler signal The above example is a poor signal as the signal strength RSSI has halved and the Qutl Spread quadrupled from the previous good signal The graph peak is not well defined...

Страница 31: ...cess Once the firmware update selection is made a file window will open and the firmware selection file can take place New firmware files may be sent to Starflow QSD users by the Unidata Support Team...

Страница 32: ...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 b...

Страница 33: ...anges in the channel Although the discharge in a channel may be reasonably constant for a period of time the velocity distribution is always changing Different velocity streams wander from side to sid...

Страница 34: ...e speed of sound in water The factor used to scale the velocity measurement is based on the speed of sound in fresh water at 20 C see table below This velocity of sound gives a calibration factor of 0...

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