CMP3 Pyranometer
CMP3 Pyranometer

The CMP3 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 CMP3 pyranometer is designed for continuous indoor and outdoor use.

  • Measures natural sunlight, most types of artificial light, and reflected solar radiation (when inverted)
  • Measurement waveband: 310 to 2800 nm
  • Thermopile pyranometer
  • CMP3 Pyranometer provides a flat spectral response for the full solar spectrum range allowing use under plant canopies or lamps, cloudy conditions, or for reflected radiation measurements
  • Integrates leveling capability
  • Includes sun shield
Specifications CMP3
Classification to ISO 9060:2018 Spectrally Flat Class C
Sensitivity 5 to 20µV/W/m²
Impedance 20 to 200Ω
Expected output range (0 to 1500 W/m²) 0 to 30mV
Maximum operational irradiance 2000 W/m²
Response time (63%) < 6s
Response time (95%) < 18s
Spectral range (20% points) 285 to 3000nm
Spectral range (50% points) 300 to 2800nm
Zero offsets (unventilated) (a) thermal radiation (at 200 W/m²) (b) temperature change (5 K/h) < 15 W/m²
< 5 W/m²
Non-stability (change/year) < 1%
Non-linearity (100 to 1000 W/m²) < 1.5%
Directional response (up to 80° with 1000 W/m² beam) < 20W/m²
Spectral selectivity (350 to 1500 nm) < 3%
Tilt response (0° to 90° at 1000 W/m²) < 1%
Temperature response < 5% (-10°C to +40°C)
Field of view 180°
Accuracy of bubble level < 0.2°
Temperature sensor output -
Detector type Thermopile
Operating and storage temperature range 40°C to +80°C
Humidity range 0 to 100%
MTBF (Mean Time Between Failures) > 10 years
Ingress Protection (IP) rating 67
Recommended applications Economical solution for routine measurements in weather stations, field testing

 

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