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CNR1 Table of Contents

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1. General Description.....................................................1

2. Sensor Specifications .................................................1

2.1 CNR1 Specifications ................................................................................1

2.2 CM3 Specifications ..................................................................................2

2.3 CG3 Specifications ...................................................................................3

3. Installation....................................................................3

4. Using the CNR1 in the Four Separate

Components Mode (4SCM).................................... 5

4.1 Measuring Solar Radiation with the CM3 ................................................5

4.2 Measuring Far Infrared Radiation with the CG3 ......................................5

4.3 Measuring the CNR1’s Temperature with the Pt-100 ..............................6

4.4 Calculation of the Albedo for Solar Radiation .........................................6

4.5 Calculation of the Net Solar Radiation .....................................................6

4.6 Calculation of the Net Infrared Radiation (Net Long-Wave) ...................7

4.7 Calculation of the Net (total) Radiation....................................................7

5. Wiring............................................................................ 7

6. Datalogger Programming..........................................10

6.1 Calibration Factor ...................................................................................11

6.2 Example Programs..................................................................................11

6.2.1 Example 1, CR23X Program Using Differential Channels...........11

6.2.2 Example 2, CR23X Program Using Single-Ended Channels .......15

6.2.3 Example 3, CR1000 Using Differential Channels ........................17

6.2.4 Example 4, CR5000 Using Differential Channels (no 4WPB100) .19

7. Calibration .................................................................. 22

8. Troubleshooting ........................................................22

8.1 Testing the CM3 .....................................................................................22

8.2 Testing of the CG3 .................................................................................23

8.3 Testing the Pt-100...................................................................................23

A. CNR1 Performance and Measurements under

Different Conditions........................................... A-1

1 2 3 4 5 6 7 8 ... 31 32

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