Campbell Scientific 229 Water Matric Potential Sensor and CE4/CE8 - Manual (Page 17)

229 Heat Dissipation Matric Water Potential Sensor
'Measure temperature after 30 second of heating
TCDiff(Temp_30sec_C(i),1,mV2_5C,1,TypeT,RefTemp_C,True,0,_60Hz,1,0)
PortSet (3,0 )
'Set C3 low to deactivate CE4
DeltaT_C(i)=Temp_30sec_C(i)-Temp_1sec_C(i)'Calculate temperature rise
Call TempCorr
'Call temperature correction subroutine
dTcorr(i)=DeltaTcorr
Next i
EndIf
'Ends Flag(1) high condition
PortSet(1,0) 'Turn multiplexer Off
CallTable(Matric) 'Call Data Tables and Store Data
Flag(1)=False 'Disable 229 measurements
NextScan
EndProg
5.7 Example #3 — CR10X with 229 Sensor
Table 5-3 shows wiring information for reading a single sensor with a CR10X
datalogger, CE4 current excitation module, and CR10XTCR thermocouple
reference temperature sensor.
TABLE 5-3. 229 Sensor and CE4/CE8 Wiring with CR10XTCR
229 Function CR10(X) CE4 CR10XTCR
Blue 229 Thermocouple High 1H
Red 229 Thermocouple Low 1L
Green 229 Heater High Channel 1
Black 229 Heater Low
Clear 229 Shield G
CE4/CE8 Power 12V +12V
CE4/CE8 Ground G
CE4/CE8 Enable C1 CTRL
CR10XTCR Signal 2H Red
CR10XTCR Signal Return AG Clear
CR10XTCR Excitation E3 Black
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