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Appendix C. CNR4 Performance and Measurements under Different Conditions

FIGURE C-1. Different measurement conditions and signals

FIGURE C-2. Partly cloudy day for the upward facing pyrgeometer

Upper pyrgeometer

Day with alternating cloud fields

-180

-170

-160

-150

-140

-130

-120

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-100

-90

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-10

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pyrgeometer: U_emf / Sensitivity [W/m²] Temp YSI 44031 [°C]

Upper Pyrgeometer

Day with Alternating Cloud Fields

C-2

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 69 70

INSTRUCTION MANUAL 1
Limited Warranty 3
Assistance 4
Precautions 5
Table of Contents 10
CNR4 Net Radiometer 11
4. Quickstart 12
4.3 Short Cut Programming 14
5. Overview 17
6. Specifications 18
6.1 CNR4 Specifications 20
to 0 to -200 W/m 21
7. Operation 22
7.1.4 Calculation of Albedo 26
7.2 Wiring 28
7.3 Datalogger Programming 31
8. Troubleshooting 32
8.1 Testing the Pyranometer 33
8.2 Testing the Pyrgeometer 33
8.3 Testing the Thermistor 33
8.4 Testing the Pt-100 34
9.2 Recalibration 34
9.4 Replacement Parts 35
Into CRBasic Editor 37
Measurements 39
Temperature Sensor 48
Measurements under Different 53
Conditions 53
Upper pyrgeometer 54
D.1 General Information 57
Unit to CNR4 59
D.3 Wiring 63
Heater/Ventilator Control 64
D.5.1 Testing the Heater 67

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