Campbell Scientific CHP1 Pyrheliometer (from Kipp & Zonen) User Manual
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TABLE OF CONTENTS
IMPORTANT USER INFORMATION........................................................................................................................................2
WARRANTY AND LIABILITY.....................................................................................................................................................2
DECLARATION OF CONFORMITY .........................................................................................................................................3
TABLE OF CONTENTS.................................................................................................................................................................4
INTRODUCTION ............................................................................................................................................................................5
1
INSTALLATION AND OPERATION................................................................................................................................6
1.1
Delivery................................................................................................................................... 6
1.2
Contents of delivery ................................................................................................................ 6
1.3
Mechanical installation............................................................................................................ 6
1.4
Electrical installation ............................................................................................................... 7
2
OPERATION............................................................................................................................................................................8
2.1
Measurement of direct solar radiation..................................................................................... 8
2.2
Measurement of instrument temperature ................................................................................ 8
3
MAINTENANCE .....................................................................................................................................................................9
4
PRINCIPLE COMPONENTS OF PYRHELIOMETERS.............................................................................................. 10
4.1
Window ................................................................................................................................. 10
4.2
Detector ................................................................................................................................ 10
4.3
Housing ................................................................................................................................ 10
4.4
Drying cartridge .................................................................................................................... 10
4.5
Cable and connector ............................................................................................................. 10
5
PYRHELIOMETER PHYSICAL PROPERTIES............................................................................................................. 11
5.1
Spectral range ....................................................................................................................... 11
5.2
Sensitivity.............................................................................................................................. 11
5.3
Impedance ............................................................................................................................ 11
5.4
Response time ...................................................................................................................... 11
5.5
Operating temperature.......................................................................................................... 11
5.6
Field of view.......................................................................................................................... 12
5.7
Environmental ....................................................................................................................... 12
6
MEASUREMENT ACCURACY ........................................................................................................................................ 13
6.1
Non linearity ......................................................................................................................... 13
6.2
Temperature dependence...................................................................................................... 13
6.3
Zero offset B ......................................................................................................................... 13
6.4
Non-stability.......................................................................................................................... 14
6.5
Spectral selectivity................................................................................................................. 14
7
CALIBRATION..................................................................................................................................................................... 15
7.1
Calibration principle.............................................................................................................. 15
7.2
Calibration procedure at Kipp & Zonen.................................................................................. 15
7.3
Traceability to world radiometric reference ........................................................................... 15
8
RECALIBRATION ............................................................................................................................................................... 16
9
FREQUENTLY ASKED QUESTIONS ............................................................................................................................ 16
10
TROUBLE SHOOTING ................................................................................................................................................. 16
APPENDIX I RADIOMETRIC TERMINOLOGY .................................................................................................................. 17
APPENDIX II 10K THERMISTOR SPECIFICATIONS ...................................................................................................... 18
APPENDIX III PT-100 SPECIFICATIONS ............................................................................................................................ 19
APPENDIX IV MAIN SPECIFICATIONS ............................................................................................................................... 20
APPENDIX V LIST OF WORLD AND REGIONAL RADIATION CENTRES .............................................................. 21
APPENDIX VI RECALIBRATION SERVICE ......................................................................................................................... 22