Campbell CS616 Instrukcja Obsługi Pobierz pdf (Strona 18)

CS616 and CS625 Water Content Reflectometers

'CR200(X) program to read 4 CS625s

'Standard calibration is used to convert CS625 output

'period to volumetric water content.

'Sensors are read hourly and average water content are written to storage every 4 hours.

'Declare Variables

Public period(4),vwc(4)

Dim i

'Declare Constants

Const a0=-0.0663

Const a1=-0.0063

Const a2=0.0007

'Define Data Tables

DataTable (ofile,1,10)

DataInterval (0,4,hr)

Average (4,vwc,0)

EndTable

'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

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 49 50

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