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WindSonic Doc No 1405 PS 0019 Issue 25 February 2017

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4 PRINCIPLE OF OPERATION

The WindSonic measures the times taken for an ultrasonic pulse of sound to travel from the
North transducer to the South transducer, and compares it with the time for a pulse to travel
from S to N transducer. Likewise times are compared between West and East, and E and W
transducer.

If, for example, a North wind is blowing, then the time taken for the pulse to travel from N
to S will be faster than from S to N, whereas the W to E, and E to W times will be the same.
The wind speed and direction can then be calculated from the differences in the times of
flight on each axis. This calculation is independent of factors such as temperature.

Figure 1 Time of Flight details

WindSonic Doc No 1405 PS 0019 Issue 25 February 2017

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Figure 2 Compass Points

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Содержание GILL

Страница 1: ...S TO WINDSONIC 75 OPTION 1 2 and 3 UNITS SUPPLIED WITH FIRMWARE 2368 107 01 APPLIES TO OPTION 4 SDI 12 UNITS FROM JUNE 2011 WITH SERIAL NUMBERS 11220007 ONWARDS Gill Instruments Limited Saltmarsh Park...

Страница 2: ...Wind Speed scaling 35 9 7 5 Tunnel mode 35 9 7 6 Analogue Output Rate 35 9 7 7 Disabled outputs 35 9 7 8 Analogue Output Conditions 35 9 7 9 Low wind speeds below 0 05 m s 36 WindSonic Doc No 1405 PS...

Страница 3: ...l user selectable The WindSonic can be used in conjunction with a PC data logger or other device provided it is compatible with one of the standard communication formats provided by the WindSonic Wind...

Страница 4: ...red between West and East and E and W transducer If for example a North wind is blowing then the time taken for the pulse to travel from N to S will be faster than from S to N whereas the W to E and E...

Страница 5: ...esistance Digital output formats Gill Continuous or Polled output on request by host system Polar Speed and Direction or UV 2 axis signed Speed Marine NMEA NMEA 0183 version 3 Communication formats Wi...

Страница 6: ...10 080 1405 PK 069 1405 30 056 Bracket for mounting to a Pole includes a WindSonic Adaptor 1771 PK 115 WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 11 6 2Packaging Whilst the WindSonic is bein...

Страница 7: ...th an outside diameter of 6 12mm Put the parts on the cable in the order as shown below Whilst squeezing the red retainer in the direction of ARROWS A pull in the direction of ARROW B A A B Your conne...

Страница 8: ...onnector until it is fully in place Please note that the final rotations can be slightly stiff WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 15 Now screw the next part of the connector into pla...

Страница 9: ...ted on the prevailing wind side of the site The WMO make the following recommendations The standard exposure of wind instruments over level open terrain is 10m above the ground Open terrain is defined...

Страница 10: ...t 12v dc rising to 44mA for Analogue variant Lowest power consumption is obtained with the following configuration M2 P20 B3 S9 approximately 5 5mA at 12v WindSonic 75 Option 1 2 and 3 Units Require a...

Страница 11: ...reverse voltage connection 7 6Changing an Option 2 or 3 Sensor set for RS232 back to RS422 Connect the Option 2 or 3 WindSonic as per Para 7 5 Repeat instructions shown in Para 7 5 except that in Safe...

Страница 12: ...1 S4 C2 G0 K50 See Section 10 Configuring for further details WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 23 7 9Using RS485 2 wire point to point with Option 2 or 3 units Notes 1 The unit mus...

Страница 13: ...d its bearing 8 1 2 Mounting The support tube requires three 3 equally spaced holes tapped M5 7 5mm from the top of the tube Pass the cable fitted with the 9 way Clipper plug through the tube Note the...

Страница 14: ...MWV with Gill Status Codes Tunnel U Direction U Speed Each of these is described below Information on how to change the formats and settings follows in Section 10 CONFIGURING 9 1Gill format Polar Cont...

Страница 15: ...er hour P Kilometres per hour K Feet per minute F Low Wind Speeds below 0 05ms Whilst the wind speed is below 0 05 metres sec the wind direction will not be calculated In CSV mode no direction value w...

Страница 16: ...ends a Poll signal to the WindSonic consisting of the WindSonic Unit Identifier that is the relevant letter A Z The output formats are otherwise as described in Sections 9 1 and 9 2 The commands avail...

Страница 17: ...e Wind Direction Wind Speed and Units are as described in Section 9 1 The Instrument Type IIMWV is a mnemonic for Integrated Instrument Mean Wind direction Velocity alternative start of string format...

Страница 18: ...rom 539 to 180 there will be a step change after which the output will change smoothly Wind Direction degrees Voltage Output 0v to 5V Current Output 0mA to 20mA Current Output 4mA to 20mA Standard Wra...

Страница 19: ...et Fixed Analogue Output level in an error mode The unit will output a fixed Voltage T1 setting or fixed milli amp T5 T3 settings signal on the analogue output with a value depending on the Y2 nnn set...

Страница 20: ...ther terminal emulator package such as Windows HyperTerminal This section describes the commands used to change User and Communications settings 10 1 Wind Wind software is available on the supplied CD...

Страница 21: ...view the Sensor Settings click on Tools Report Config When selected a similar message to that below will be seen WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 41 To review and change the WindSo...

Страница 22: ...using Commands listed in Para s 10 4 to 10 7 1 WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 43 10 2 WindView Gill WindView software is available on the supplied CD or as a download free of ch...

Страница 23: ...d setting Click on the Connect button Data should scroll on the screen as follows Data button WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 45 Clicking on the Anemometer 1 Windsock button gives...

Страница 24: ...nd save individual files of length set by the figure in the mins box Otherwise a continuous log file will be recorded Select required Directory for saved file and File name Click on Apply Click on the...

Страница 25: ...a Poll signal when in Polled mode WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 49 10 6 Checking the configuration We recommend that as a standard procedure you use this command prior to and af...

Страница 26: ...and it is required to set to Baud rate to B2 4800 baud Type to enter Configuration Mode Type B 2 and press ENTER Do not type any further commands at this stage Close the 9600 Baud HyperTerminal connec...

Страница 27: ...above may vary WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 53 Kxx to Kxxxx Minimum Direction Velocity Item Options Command Minimum Direction Velocity 0 05m s to 5m s K50 KXX to KXXXX This fea...

Страница 28: ...P20 P21 Q Measurement Mode See Section 10 5 WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 55 Sx Analogue Output Range The following command is only valid for the WindSonic Option 3 Item Option...

Страница 29: ...ft detergent Solvents should not be used and care should be taken to avoid scratching any surfaces The unit must be allowed to defrost naturally after being exposed to snow or icy conditions do NOT at...

Страница 30: ...e calibration within its lifetime WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 59 12 2 Self Test Still Air This test checks Alignment and Checksums Alignment tests The unit performs a transduc...

Страница 31: ...olatile Memory PC IBM compatible Personal Computer ROM Read Only Memory RS232 Communications standard RS422 Communications standard RS485 Communications standard RXD Received Data TXD Transmitted Data...

Страница 32: ...ndard output message Environmental Moisture protection IP66 Temperature Operating 35 C to 70 C Storage 40 C to 80 C Humidity Operating 5 to 100 EMC EN 61000 6 3 Emissions EN 61000 6 2 Immunity Standar...

Страница 33: ...ta Scalar magnitude maximum and direction associated with that maximum converted into U and V components AR3 a U_vectorav V_vectorav U_from_scalarmax V_from_scalarmax status CR LF e g 0 000 00 000 02...

Страница 34: ...00053 Send Data aD0 a dir mag status CRC CR LF e g 0 295 000 01 00B T CR LF Start Measurement with CRC UV aMC1 atttn CR LF e g 00053 Send Data aD0 a U V status CRC CR LF e g 0 000 00 000 00 00JZY CR L...

Страница 35: ...ift and 8 and switch on power This should place the WindSonic into Safe Mode WindSonic Doc No 1405 PS 0019 Issue 25 February 2017 69 Unit Checks If commands are typed followed by the Enter key that th...

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