CNR4 – Net Radiometer

The CNR4 net radiometer is used to measure the radiation balance between incident and reflected short-wave radiation and long-wave infrared radiation. The instrument contains two pyranometers for measuring shortwave radiation and two pyrgeometers for measuring longwave radiation. The radiometer provides four separate outputs corresponding to the individual components of the radiation balance. This allows for the precise evaluation of the surface energy balance, albedo, or energy exchange processes between the surface and the atmosphere.

Four-component radiation balance measurement
Two pyranometers and two pyrgeometers in a single instrument
Separate outputs for individual radiation components
High accuracy and long-term stability
Rugged design for outdoor use
Option for a heated ventilation unit

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Description

The radiometer is designed for long-term outdoor use in meteorological and environmental applications. The instrument’s design minimizes the effects of heating from direct sunlight and ensures stable measurements even during long-term operation.
The sensor can be installed on weather masts or special mounts. For demanding applications, the radiometer can be equipped with a heated ventilation unit that prevents dew or frost from forming on the optical components.

Applications

Meteorological measurements
Agro-meteorological stations
Environmental research
Surface energy balance measurements
Hydrological and climatological studies

Technical specifications

Technical Specifications	CNR4
Device Type	four-component net radiometer
Short-wave radiation	0.3 – 2.8 µm
Long-wave radiation	4.5 – 42 µm
Response time (95%)	< 18 s
Operating temperature	−40 to +80 °C
Field of view	up to 180°
Outputs	4 analog signals

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Price List Cenik 2026 V101

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NR LITE2 – Net Radiometer

The NR LITE2 is a net radiometer designed to measure net radiation—that is, the difference between incident and reflected shortwave and longwave radiation. This parameter is key to determining the energy available for evaporation, photosynthesis, and surface–atmosphere heat exchange, and is essential in meteorology, agrometeorology, hydrology, and heat balance studies. The radiometer combines high sensitivity with a robust, weather-resistant design and is optimized for long-term outdoor measurements.

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