Campbell Scientific 020C Wind Direction Sensor - Manual (Page 17)

Model 020C Wind Direction Sensor
'Main Program
BeginProg
'Main Scan
Scan(1,Sec,1,0)
'Default Datalogger Battery Voltage measurement 'BattV'
Battery(BattV)
'Default Wiring Panel Temperature measurement 'PTemp_C'
PanelTemp(PTemp_C,_60Hz)
'020C Wind Direction Sensor measurement 'WindDir'
VoltSe(WindDir,1,mV5000,1,1,0,_60Hz,0.072,0)
'Offset correction for vane installed with 270 degree
'installation orientation
WindDir = (WindDir + 90 + 360)MOD 360
'Call Data Tables and Store Data
CallTable(Table1)
CallTable(Table2)
NextScan
7.6 Sensor Check-Out
With the datalogger measuring the sensor, 020C output moves up-scale as the
vane rotates clockwise (as seen from above the sensor). Output will progress
up-scale until the 360
° (full scale) mark has been reached. Output then drops
to near 0 °. When the notches on the rotating hub and the column of the sensor
are exactly aligned, the output will be 180 °.
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