Specifications
Table Of Contents
- Revision and Copyright Information
- Warranty and Assistance
- Table of Contents
- CNR4 Net Radiometer
- 1. General Description
- 2. Sensor Specifications
- 3. Installation
- 4. Using the Optional CNF4 Heater/Ventilator Unit
- 5. Using the CNR4 in the Four Separate Components Mode
- 5.1 Measuring Short-wave Solar Radiation with Pyranometer
- 5.2 Measuring Long-wave Far Infrared Radiation with Pyrgeometer
- 5.3 Measuring CNR4 Temperature with Thermistor
- 5.4 Calculation of Albedo
- 5.5 Calculation of Net Short-wave Radiation
- 5.6 Calculation of Net Long-wave Radiation
- 5.7 Calculation of Net (Total) Radiation
- 6. Wiring
- 7. Datalogger Programming
- 8. Troubleshooting
- 9. Maintenance and Recalibration
- Appendix A. CNR4 Performance and Measurements under Different Conditions
- Appendix B. CNF4 Heater/Ventilator
- Appendix C. CR3000 Program for Measuring Pt-100 Temperature Sensor
- Campbell Scientific Contact Information
CNR4 Net Radiometer
2.1 CNR4 Specifications
Sensor sensitivities:
Four probes have unique sensitivity
values. Please refer to the calibration
sheets or label on the bottom of the
sensor for the sensitivity values.
Operating temperature:
-40 to +80°C (-40 to 176°F)
Operating humidity:
0 to 100 % RH
Bubble level sensitivity:
< 0.5°
Sensor type:
Thermopile
Receiver paint:
Carbon Black
Desiccant:
Silica gel (replaceable)
Housing material:
Anodized aluminum body
Shock/vibration:
IEC 721-3-2-2m2
CE:
Complies with EC guideline
89/336/EEC 73/23/EEC
Environmental protection:
IP 67
Requirements for data acquisition
Radiation components:
4 differential or 4 single-ended analog
channels
Thermistor:
1 voltage excitation and 1 single-
ended analog channel
Pt-100 temperature:
1 current excitation and 1 differential
analog channel.
Cable length:
User defined
Weight
Sensor:
1.89 lbs (0.85 kg) without cables
Heater/Ventilator, CNF4
(optional):
1.11 lbs (0.50 kg) without cables
Mounting rod:
13.67 ” (34.7 cm) length
0.63 ” (1.6 cm) diameter
CNR4 Package includes:
CNR4 sensor
Mounting rod (1 ea.)
Solar cable (labeled SOLAR)
Temperature cable (labeled TEMP)
Drying cartridges (2 ea.)
WRR Traceable Calibration
Certificate for pyranometers
WRR Traceable Calibration
Certificate for pyrgeometers
Extra Calibration Sticker (to be put on
CNF4, if used)
CNF4 Package includes:
CNF4 Heater/Ventilator
CNF4 cable
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