Campbell 110PV, Инструкция по эксплуатации

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B-1
Appendix B. Example Programs
TABLE B-1. Wiring for Example Programs
Color Description
Datalogger Connection
BrHalf BrHalf4W
Black Voltage Excitation VX1 or EX1 VX1 or EX1
Red Signal SE1 Diff 1H
Purple Signal Reference
⏚
Diff 1L
Blue Signal Reference Not Used
⏚
Clear Shield
⏚ ⏚
Green Sense + Not Used Diff 2H
White Sense – Not Used Diff 2L
B.1 CR1000 Programs
B.1.1 Half Bridge CR1000 Program
'CR1000 Series Datalogger
'This example program measures a single 110PV-L probe utilizing
'the BrHalf instruction once a second and stores the average
'temperature in degrees C every 10 minutes.
'110PV-L Wiring Configuration
'Lead Color CR1000 Channel Description
'Black
VX1 Voltage Excitation
'Red SE1 Signal
'Purple AG Signal Reference
'Blue Not Used N/A
'Green Not Used N/A
'White Not Used N/A
'Clear AG Shield
'Declare variables for temperature measurement using Half Bridge configuration
Public T110PV_mV
Public T110PV_Res
Public T110PV_Temp_C
Public T110PV_Temp_F
'Declare Constants to be used in Steinhart-Hart equation
Const A=1.129241*10^-3
Const B=2.341077*10^-4
Const C=8.775468*10^-8
Const R_cable=0
'see sensor cable for cable resistance
'Declare variable units
Units T110PV_mV= millivolts
Units T110PV_Res=Ohms
Units T110PV_Temp_C=Deg C
Units T110PV_Temp_F=Deg F