Campbell Scientific CMP6-L, CMP11-L, and CMP21-L Pyranometers - Manual (Page 6)

Table of Contents
8. Maintenance ..............................................................22
8.1 Cleaning Domes ................................................................................ 23
8.2 Changing the Desiccant..................................................................... 23
8.3 Check Sensor Output......................................................................... 24
8.4 Recalibration ..................................................................................... 24
9. Troubleshooting........................................................25
Appendix
A. CVF3 Heater/Ventilator ...........................................A-1
A.1 General Information ........................................................................ A-1
A.2 Siting ............................................................................................... A-1
A.3 CVF3 Installation ............................................................................ A-2
A.4 Wiring.............................................................................................. A-4
A.5 CVF3 Heater/Ventilator Maintenance............................................. A-5
Figures
4-1. Pyranometer installation...................................................................... 3
4-2. Pyranometer mounted horizontally for the Northern Hemisphere
(left) and Southern Hemisphere (right)............................................ 3
4-3. Two views of a pyranometer mounted at an angle for the Northern
Hemisphere ...................................................................................... 4
4-4. Pyranometer mounted at an angle for the Southern Hemisphere......... 4
4-5. SCWin Short Cut Program Generator ................................................. 5
6-1. Dimensions of the CMP6, CMP11, and CMP21 ................................. 8
6-2. Dimensions of the CVF3 ..................................................................... 8
7-1. CM245 bracket with 2.125” u-bolts positioned to mount the
pyranometer horizontally on a crossarm.......................................... 9
7-2. CM245 bracket with 1.5” u-bolts positioned to mount pyranometer
at a 40° angle on a vertical pipe ..................................................... 10
7-3. Exploded view of the pyranometer mounting.................................... 11
7-4. CMP6, CMP11, and CMP21 thermopile detector schematic ............ 12
8-1. Reading is reduced if dome is not dry or clean.................................. 23
8-2. Changing the desiccant...................................................................... 24
A-1. Transparent view of CVF3 shows air flow...................................... A-1
A-2. Pyranometer mounted to the CVF3 ................................................. A-2
A-3. CVF3 installed onsite ...................................................................... A-3
A-4. Fastening cover on CVF3................................................................ A-4
A-5. CVF3 filter replacement .................................................................. A-5
Tables
6-1. CMP-series Specifications................................................................... 7
7-1. CMP6 and CMP11 Differential Connections to Campbell
Scientific Dataloggers.................................................................... 12
7-2. CMP6 and CMP11 Single-Ended Connections to Campbell
Scientific Dataloggers.................................................................... 13
7-3. CMP21 Differential Connections to Campbell Scientific
Dataloggers .................................................................................... 13
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