Campbell Scientific CNR1 Net Radiometer - Manual (Page 20)

CNR1 Net Radiometer
'Define Data Tables
DataTable(Table1,True,-1)
DataInterval(0,60,Min,10)
Average(1,CM3Up,FP2,False)
Average(1,CM3Dn,FP2,False)
Average(1,CG3Up,FP2,False)
Average(1,CG3Dn,FP2,False)
Average(1,CNR1TC,FP2,False)
Average(1,CNR1TK,FP2,False)
Average(1,NetRs,FP2,False)
Average(1,NetRl,FP2,False)
Average(1,Albedo,FP2,False)
Average(1,UpTot,FP2,False)
Average(1,DnTot,FP2,False)
Average(1,NetTot,FP2,False)
Average(1,CG3UpCo,FP2,False)
Average(1,CG3DnCo,FP2,False)
EndTable
'Main Program
BeginProg
Scan(1,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:
'CNR1 Sensitivity 7.30 uV/m^2
VoltDiff(CM3Up,1,mV20C,1,True,200,250,136.99,0)
VoltDiff(CM3Dn,1,mV20C,2,True,200,250,136.9,0)
VoltDiff(CG3Up,1,mV20C,3,True,200,250,136.9,0)
VoltDiff(CG3Dn,1,mV20,4,True,200,250,136.9,0)
Resistance (CNR1TC,1,mV200,6,Ix1,1,1675,True ,True,200,250,1.0,0)
'Formulate the ratio Rs/R0
CNR1TC=CNR1TC/100
PRT(CNR1TC,1,CNR1TC,1,0)
'Compute Net short-wave radiation, Net long-wave radiation, Albedo and Net Radiation
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
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