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Campbell Scientific HMP45C Temperature and RH Probe User Manual

Page 3

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HMP45C Table of Contents

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1. General Description

.....................................................1

2. Specifications

..............................................................2

2.1 Temperature Sensor ..................................................................................2
2.2 Relative Humidity Sensor.........................................................................2

3. Installation

....................................................................3

3.1 Siting.........................................................................................................3
3.2 Assembly and Mounting...........................................................................3

4. Wiring

............................................................................5

5. Example Programs

......................................................6

6. Long Lead Lengths

......................................................9

7. Absolute Humidity

.....................................................12

8. Sensor Maintenance

..................................................15

9. Troubleshooting

........................................................16

10. References

...............................................................16

Appendix

A. Wiring for Older HMP45C Probes

.......................... A-1

Figures

3-1. HMP45C and 41003-5 Radiation Shield on a Tripod Mast ....................4
3-2. HMP45C and 41003-5 Radiation Shield on a CM200 Series Crossarm.4
A-1. HMP45C Probe to Datalogger Connections...................................... A-1

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