Kipp & Zonen - CMP 3 second class pyranometer

By: Kipp & Zonen  09-12-2011
Keywords: Solar Energy, Solar Radiation, Operating Temperature Range,

• Low cost radiometer for
accurate routine measurementsWeatherproof cable connectorEasy way of
leveling the instrument

Sun shield reduces the heating of the body

Two CMP 3s can form a albedometer

The CMP 3 pyranometer is an instrument for measuring the solar irradiance. The thermopile sensor construction measures the solar energy that is received from the total solar spectrum and the whole hemisphere (180 degrees field of view). The output is expressed in Watts per meter square. The CMP 3 pyranometer is designed for continuous indoor and outdoor use.

The CMP 3 pyranometer (ISO Second Class) is intended for shortwave global solar radiation measurements in the spectral range from 300 to 2800 nm. The thermopile detector measures irradiance up to 2000 W/m² with response time <18 seconds and typical sensitivity 10 µV/W/m² that varies less than 5 % from -10 ºC to +40 ºC.

Operating temperature range is -40 ºC to +80 ºC and the stability is better than 1 % per year.

The CMP 3 pyranometer features a snap-on white sun shield, integrated leveling and a weatherproof connector which is supplied pre-wired with 10 m of signal cable for simple installation. An optional mounting rod and longer cable lengths are available. Two CMP 3s can easily be mounted back-to-back to make a low-cost albedometer.

Spectral range 300 to 2800 nm
Sensitivity 5 to 20 µV/W/m²
Response time 18 s
Zero offset A < 15 W/m²
Zero offset B < 5 W/m²
Directional error (up to 80 ° with 1000 W/m² beam) < 20 W/m²
Temperature dependence of sensitivity (-10 ºC to +40 ºC) < 5 %
Operating temperature range -40 °C to +80 °C
Maximum solar irradiance 2000 W/m²
Field of view 180 °

Keywords: Operating Temperature Range, Solar Energy, Solar Radiation

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