Instruction manual

Table of Contents
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1. Introduction ................................................................. 1
2. Cautionary Statements ............................................... 1
3. Initial Inspection ......................................................... 1
3.1 Ships With ............................................................................................ 1
4. Quickstart .................................................................... 2
4.1 Siting Considerations ........................................................................... 2
4.2 Mounting .............................................................................................. 2
4.3 Short Cut Programming ....................................................................... 4
5. Overview ...................................................................... 7
6. Specifications ............................................................. 8
6.1 CNR4 Specifications .......................................................................... 10
6.2 Pyranometer Specifications ................................................................ 10
6.3 Pyrgeometer Specifications ................................................................ 11
6.4 Optional CNF4 Heater/Ventilator ...................................................... 12
6.4.1 CNF4 Specifications ................................................................... 12
7. Operation ................................................................... 12
7.1 Using the CNR4 in the Four Separate Components Mode ................. 13
7.1.1 Measuring Short-wave Solar Radiation with Pyranometer ......... 13
7.1.2 Measuring Long-wave Far Infrared Radiation with
Pyrgeometer............................................................................. 13
7.1.3 Measuring CNR4 Temperature with Thermistor ........................ 14
7.1.4 Calculation of Albedo ................................................................. 16
7.1.5 Calculation of Net Short-wave Radiation ................................... 17
7.1.6 Calculation of Net Long-wave Radiation ................................... 17
7.1.7 Calculation of Net (Total) Radiation .......................................... 18
7.2 Wiring ................................................................................................ 18
7.3 Datalogger Programming ................................................................... 21
7.3.1 Sensor Sensitivity ....................................................................... 22
8. Troubleshooting........................................................ 22
8.1 Testing the Pyranometer .................................................................... 23
8.2 Testing the Pyrgeometer .................................................................... 23
8.3 Testing the Thermistor ....................................................................... 23
8.4 Testing the Pt-100 .............................................................................. 24
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