Campbell CS616, Instruction Manual

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CS616 and CS625 Water Content Reflectometers
'Main Program
BeginProg
Scan (1,hr)
SWBatt (1)
PeriodAvg (period(1),1,0,10,10,C1,1,0)
PeriodAvg (period(2),2,0,10,10,C1,1,0)
PeriodAvg (period(3),3,0,10,10,C1,1,0)
PeriodAvg (period(4),4,0,10,10,C1,1,0)
For i=1 To 4
vwc(i) = a0 + a1*period(i) + a2*period(i)^2
Next i
CallTable ofile
NextScan
EndProg
6.4.3.2 CS625 Sample Program 2
Measure temperature with 109 probe and use the 109 temperature to correct the
period for 1 CS625. Use standard calibration equation to convert temperature-
corrected period to volumetric water content. Sensors are read hourly and
average water content and temperature are written to storage every 4 hours.
CS625
leads
CR200(X)
green Single-Ended Channel 1 (SE1)
black ground for SE1
orange Control Port 1 (C1)
red SW Battery
clear G
109
leads
CR200(X)
black Switched excitation channel 1
(EX1)
red Single-Ended Channel 5
(SE5)
purple G
clear G
'CR200(X) program to read 1 109 temperature probe and 1 CS625.
'Use temperature to correct CS625 period.
'Standard calibration is used to convert CS625 output
'period to volumetric water content.
'Sensors are read hourly and average water content and
'temperature are written to storage every 4 hours.
'Declare Variables
Public Tsoil
Public uncorrected,corrected
Public vwc
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