
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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