Campbell Scientific LP02 Hukseflux Pyranometer - Manual (Page 19)

LP02 Pyranometer
Wiring for the examples is given in TABLE 7-4.
TABLE 7-4. Wiring for Example Programs
Color Description CR1000 CR10X
White Signal (+) DIFF Analog High DIFF Analog High
Green Signal (–) *DIFF Analog Low *DIFF Analog Low
Clear Shield G
* Jumper to AG or with user supplied wire.
7.2.4.1 CR1000 Example Program
'CR1000
'Declare Variables and Units
Public Solar_Wm2
Public Solar_MJ
Units Solar_Wm2=W/m²
Units Solar_MJ=MJ/m²
'Hourly Data Table
DataTable(Table1,True,-1)
DataInterval(0,60,Min,10)
Average(1,Solar_Wm2,FP2,False)
EndTable
'Daily Data Table
DataTable(Table2,True,-1)
DataInterval(0,1440,Min,10)
Totalize(1,Solar_MJ,IEEE4,False)
EndTable
'Main Program
BeginProg
Scan(10,Sec,1,0)
'LP02 Pyranometer measurement in Wm -2 :
'The Multiplier (m) for this example is based upon a sensor calibration (c) of
'15.02 µV/Wm -2 , and will be different for each sensor.
'Multiplier (m) = 1000/c = 66.577896.
VoltDiff(Solar_Wm2,1,mV25,1,True,0,_60Hz,66.577896,0) ‘use the 50 mV range for the
CR3000, CR5000 and CR9000
'Set negative readings to zero:
If Solar_Wm2<0 Then Solar_Wm2=0
'Calculate units in MJ, where MJ = m * t * 0.000001. m = Solar_Wm2 from above, and
't = 10 (scan interval)
Solar_MJ=Solar_Wm2*0.00001
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