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Appendix a. wiring for older hmp45c probes – Campbell Scientific HMP45C Temperature and RH Probe User Manual

Page 21

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Appendix A. Wiring for Older HMP45C
Probes

Color Description

Yellow Temperature

Signal

Blue

Relative Humidity Signal

Purple Signal

Reference

Orange Power

Control

Red Power

Black Power

Ground

Shield Shield

FIGURE A-1. HMP45C Probe to Datalogger Connections

TABLE A-1. Connections for Single-Ended Measurements for Old Wiring Configuration


Color


Description

CR10(X), CR510,

CR500

CR1000, CR3000

CR800, CR9000,

CR23X


21X, CR7

Yellow

Temperature

Single-Ended Input

Single-Ended Input

Single-Ended Input

Blue

Relative Humidity

Single-Ended Input

Single-Ended Input

Single-Ended Input

Purple Signal

Reference

AG

Orange

Power Control

Control Port

Control Port

Control Port

Red

Power

12 V

12 V

12 V

Black Power

Ground

AG

Clear Shield

G

A-1