Campbell 229 Dokumentacja Pobierz pdf (Strona 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

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 33 34

Brak uwag

Campbell 229 Dokumentacja Strona 17