Hello Everyone
I have a meteorological station measuring air temperature and relative humidity with a HC2S3 connected to a CR6 datalogger, near latitude -40. The instrument gave correct measurements of air temperature, however, the relative humidity measurements deliver anomalous values when it reaches 100%,the measurements shows values that fluctuate between 0.2-0.3, i have been used the following code:
Public AirTC
Public AirTK Public RH
Units AirTC=Deg C
Units AirTK=K
Units RH=%
DataTable(Station,True,-1)
DataInterval(0,5,Min,10)
CardOut (0,-1)
Average(1,AirTK,FP2,False)
Sample(1,RH,FP2)
EndTable
BeginProg
Scan(1,Min,1,0)
CDM_VoltSe(CDM_A108,1,AirTC,1,mV1000,1,0,0,50,0.1,-40)
AirTK=AirTC+273.15
CDM_VoltSe(CDM_A108,1,RH,1,mV1000,2,0,0,50,0.1,0)
If (RH>100) AND (RH<108) Then RH=100
CallTable Station
NextScan
EndProg
I have another station near, with the same instrument but different datalogger (CR1000) and show well relative humidity measurements.
Does anyone know what the problem might be?
My Cordial Regards,
Italo