Campbell Scientific CMP6-L, CMP11-L, and CMP21-L Pyranometers - Manual (Page 26)

CMP6-L, CMP11-L, and CMP21-L Pyranometers
'CR1000 Series Datalogger
Public PTemp
Public Batt_Volt
Public CMP6_Irr
Units CMP6_Irr = W/m2
DataTable (TenMin,1,-1)
DataInterval (0,1,Min,4)
Minimum (1,Batt_Volt,FP2,0,False)
Sample (1,PTemp,FP2)
Average (1,CMP6_Irr,FP2,False)
StdDev (1,CMP6_Irr,FP2,False)
EndTable
BeginProg
Scan (1,Sec,0,0)
'Measure the Battery Voltage and Panel Temperature
PanelTemp (PTemp,250)
Battery (Batt_Volt)
'Measure the CMP6
VoltDiff (CMP6_Irr,1,mV25C,1,True ,10000,_60Hz,1000/14.33,0)
CallTable TenMin
NextScan
EndProg
7.3.3.2 CR1000 Example Program for Measuring a CMP11
Although this example is for the CR1000, other CRBasic dataloggers are
programmed similarly. The following program measures the CMP11 every
second and converts the millivolt output to W•m
–2 . A sensor calibration of
8.55 µV / W•m –2 is used for the example program. Every 10 minutes, the
program outputs the average and standard deviation of the flux (W•m –2 )
measurements.
Wiring for this example is given in TABLE 7-7.
TABLE 7-7. CR1000 Wiring for CMP11 Example Program
Wire Color Description CR1000 Jumper*
White Solar Signal (+) 2H
Black Solar Signal (–) 2L
Clear Shield
* Jumper 2L to
with user-supplied 26 AWG or larger wire.
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