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Benefits and Features

Includes thermistor for individually optimized temperature compensation

Compatible with most Campbell Scientific data loggers

Integrated bubble level is visible without removing sun shield

Desiccant-filled drying cartridge prevents dew from forming on the inner sides of the domes

Compatible with the CVF4 heater/ventilator that keeps the domes free from ice and dew

Measures reflected solar radiation when inverted

Provides measurements in direct sunlight, under plant canopies, when the sky is cloudy, and in artificial light

Technical Description

The CMP21 measures solar radiation with a high-quality blackened thermopile protected by two glass domes. An internal thermistor allows individually optimized temperature compensation of the measurements.

The CMP21 has flat spectral sensitivity, from 285 to 2800 nm, that makes it ideal for applications in natural sunlight, under plant canopies, in green houses or buildings, and inverted to measure reflected solar radiation.

A desiccant-filled drying cartridge prevents dew from forming on the inner sides of the CMP21's domes. Campbell Scientific also offers the CVF4 heater/ventilator that keeps its domes free from ice and dew.

The CMP21 includes a white snap-on sun shield that reduces the sensor's temperature. A bubble level and adjusting leveling screws enable the sensotro be leveled without using a leveling base.