Campbell Scientific HMP50 Temperature and Relative Humidity Sensor - Manual (Page 10)

HMP50 Temperature and Relative Humidity Probe
Black Temperature Signal
White Relative Humidity Signal
Blue Signal & Power Reference
Brown Power
Clear Shield
FIGURE 5. HMP50 Wiring
TABLE 2. Datalogger Connections
Wire Label Color
CR800, CR3000,
CR200, CR23X,
CR1000 CR10(X), CR510 21X, CR7
Temp Signal Black Single-Ended Input Single-Ended Input Single-Ended Input
RH Signal White Single-Ended Input Single-Ended Input Single-Ended Input
Power & Signal
Ground
Blue G G
Power 12V Brown 12 V 12 V 12 V
Shield Clear G
4. Wiring
Connections to Campbell Scientific dataloggers are given in Table 2. The
probe is measured by two single-ended analog input channels, one for
temperature and one for relative humidity.
Always connect the Blue lead to the datalogger first,
followed by the Black, White, and Clear leads. Connect
the Brown (Power) lead last. CAUTION
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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