Campbell Scientific CNR1 Net Radiometer - Manual (Page 18)

CNR1 Net Radiometer
'Main Program
BeginProg
Scan(2,Sec,1,0)
'Default Datalogger Battery Voltage measurement Batt_Volt:
Battery(Batt_Volt)
'CNR1 Net Radiometer measurements CM3Up, CM3Dn, CG3Up, CG3Dn, CNR1TC, CNR1TK,
'NetRs, NetRl, Albedo, UpTot, DnTot, NetTot, CG3UpCo, and CG3DnCo:
* VoltDiff(CM3Up,1,mV25,1,True,0,_60Hz,100.0,0)
* VoltDiff(CM3Dn,1,mV25,2,True,0,_60Hz,100.0,0)
* VoltDiff(CG3Up,1,mV7_5,3,True,0,_60Hz,100.0,0)
* VoltDiff(CG3Dn,1,mV7_5,4,True,0,_60Hz,100.0,0)
** BrHalf4W (CNR1TC,1,mV25,mV25,5,Vx1,1,2100,True ,True ,0,250,1.0,0)
PRT(CNR1TC,1,CNR1TC,1,0)
CNR1TK=CNR1TC+273.15
NetRs=CM3Up-CM3Dn
NetRl=CG3Up-CG3Dn
Albedo=CM3Dn/CM3Up
UpTot=CM3Up+CG3Up
DnTot=CM3Dn+CG3Dn
NetTot=UpTot-DnTot
CG3UpCo=CG3Up+5.67*10^-8*CNR1TK^4
CG3DnCo=CG3Dn+5.67*10^-8*CNR1TK^4
'Call Data Tables and Store Data
CallTable(Table1)
NextScan
EndProg
* mV20 range for the CR5000
** mV50 range (both) with 4200 mV excitation for CR5000
6.2.2 Example 2, CR5000 Using Differential Channels (no 4WPB100)
Program Example 2 requires five differential channels and one current
excitation channel to measure the four radiation outputs and the Pt-100
temperature sensor. The program measures the sensors every second and
calculates and stores the following data to final storage every 60 minutes:
Year
Julian
Day
Hour/Minute
Avg CM3 Up (shortwave radiation)
Avg CM3 Down (shortwave radiation)
Avg CG3 Up (longwave radiation)
Avg CG3 Down (longwave radiation)
Avg CNR1 temperature (degrees C)
Avg CNR1 temperature (degrees K)
Avg Net shortwave radiation
Avg Net longwave radiation
Avg Albedo
Avg Total Net radiation
Avg temperature corrected CG3 Up
Avg temperature corrected CG3 Down
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