The radiometer measures the energy balance between incoming short-wave and long-wave IR radiation versus surface-reflected short-wave and outgoing long-wave IR radiation. The CNR1 consists of a pyranometer and pyrgeometer pair that faces upward and a complementary pair that faces downward. The pyranometers and pyrgeometers measure short-wave and far infrared radiation, respectively In particular, the CNR1 net radiometer measures:

- incoming shortwave radiation

-outcoming shortwave radiation

-incoming longwave radiation

- outcoming longwave radiation

- net radiation (derived)

The CNR1 net radiometer by Kipp & Zonen is for applications requiring research-grade performance. The radiometer measures the energy balance between incoming short-wave and long-wave IR radiation versus surface-reflected short-wave and outgoing long-wave IR radiation. The CNR1 consists of a pyranometer and pyrgeometer pair that faces upward and a complementary pair that faces downward. The pyranometers and pyrgeometers measure short-wave and far infrared radiation, respectively. The CNR1 also includes an RTD to measure the radiometer’s internal temperature and a heater that can be used to prevent condensation.

CNR1 Specifications

Sensors: Kipp & Zonen’s CM3 ISO-class, thermopile pyranometer, CG3 pyrgeometer, PT100 RTD

Spectral Response

-Pyranometer: 305 to 2800 nm

-Pyrgeometer: 5000 to 50,000 nm

Response Time: 18 seconds

Sensitivity Range: 7 to 15 µV W-1 m2

Output Range

-Pyranometer: 0 to 25 mV

-Pyrgeometer: ±5 mV

Expected Accuracy for Daily Totals: ±10%

Directional Error: <25 W m-2 (pyranometer)

Heating Resistor: 24 Ohms, 6 W at 12 Vdc

CE Compliance: CE compliant under the European Union’s EMC directive