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Contents
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1. General Description
..................................................... 1
2. Specifications
.............................................................. 1
2.1 Measurements .......................................................................................... 1
2.2 Electrical .................................................................................................. 1
2.3 Physical .................................................................................................... 2
3. Installation
.................................................................... 2
3.1 Siting ........................................................................................................ 2
3.2 Mounting .................................................................................................. 2
3.2.1 Parts and Tools Needed for Mounting ........................................... 2
3.2.2 Mounting the KH20 Sensor ............................................................ 2
3.2.3 Mounting the Electronics Box ........................................................ 3
4. Wiring
........................................................................... 5
5. Datalogger Programming
............................................ 6
5.1 KH20 Calibration ..................................................................................... 6
5.2 Example 1, CR3000 Program to Measure Water Vapour Fluctuations ... 7
6. Maintenance and Calibration
...................................... 8
6.1 Visual Inspection ...................................................................................... 9
6.2 Testing the Source Tube .......................................................................... 9
6.3 Testing the Detector Tube ........................................................................ 9
6.4 Managing the Scaling of KH20................................................................ 9
6.5 Older KH20 ............................................................................................ 10
6.6 Calibration .............................................................................................. 10
Appendix
A. Calibrating KH20
..................................................... A-1
A.1 Basic Measurement Theory ................................................................. A-1
A.2 Calibration of KH20 ............................................................................ A-1
Figures
1. Mounting KH20 onto a tripod .................................................................... 3
2. Proper mounting position of the electronics box ....................................... 4
3. Attaching cables to the electronics box ...................................................... 5
A-1. KH20 ln(mV) vs. Vapour Density ..................................................... A-2
