Campbell Scientific HMP45C Temperature and RH Probe - Manual (Page 10)

Model HMP45C Temperature and Relative Humidity Probe
TABLE 4-2. Connections for Differential Measurements
Color Description CR10X
CR1000,
CR3000,
CR800,
CR5000,
CR23X
CR10,
CR510,
CR500 21X, CR7
Yellow Temperature
Signal
Differential
Input – H
Differential
Input – H
Differential
Input – H
Differential
Input – H
Jumper to
White
Temperature Signal
Reference
Differential
Input – L
Differential
Input – L
Differential
Input – L
Differential
Input – L
Blue Relative Humidity Signal Differential
Input – H
Differential
Input – H
Differential
Input – H
Differential
Input – H
White Signal Reference Differential
Input – L
Differential
Input – L
Differential
Input – L
Differential
Input – L
Black Power Ground G G G
Shield Shield G G
Red Power
Continuous/Switched
12V/SW12V 12V/SW12V 12V/SW12V* 12V/SW12V*
CR10X Power Control
if using SW12V
channel on datalogger
Jumper from
SW12V
Control
to Control Port
*On these dataloggers switched power is only available with the SW12V peripheral.
TABLE 4-3. Power Connections using SW12V Peripherals
HMP45C SW12V Peripheral Datalogger
Color Description Terminal Wire
Red Power SW12V Red 12 V
Black Power Ground GND Black G*
Green Control Port
*The black wire of the SW12V should be connected to the type of datalogger
ground channel recommended for the HMP45C black wire as listed in Table
4-1 and Table 4-2.
5. Example Programs
This section is for users who write their own datalogger programs. A
datalogger program to measure this sensor can be created using Campbell
Scientific’s Short Cut Program Builder software. You do not need to read this
section to use Short Cut.
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