CMP6 Pyranometer
CMP6 Pyranometer

The CMP6 pyranometer is intended for routine global solar radiation measurement research on a plane/level surface.

Fully compliant with ISO 9060 spectrally flat Class B specification for a First Class pyranometer, the CMP6 features a sixty-four thermocouple junction (series connected) sensing element. The sensing element is coated with a highly stable carbon based non organic coating, which delivers excellent spectral absorption and long term stability characteristics.

  • CMP6 Pyranometer measures solar radiation with a high-quality blackened thermopile protected by two glass domes.
  • Its flat spectral sensitivity, from 285 to 2800 nm, 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 CMP6's domes.
  • Heater/ventilator that keeps its domes free from ice and dew.
  • Includes a white snap-on sun shield that reduces the sensor's temperature. A bubble level and adjusting leveling screws enable the sensor to be leveled without using a leveling base.
  • Produces a millivolt signal that is measured directly by a Campbell Scientific datalogger.
Specifications CMP6
Classification to ISO 9060:2018 Spectrally Flat Class B
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) 270 to 3000nm
Spectral range (50% points) 285 to 2800nm
Zero offsets (unventilated) (a) thermal radiation (at 200 W/m²) (b) temperature change (5 K/h) < 10W/m²
< 4W/m²²
Non-stability (change/year) < 1%
Non-linearity (100 to 1000 W/m²) < 1%
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 < 4% (-10°C to +40°C)
Field of view 180°
Accuracy of bubble level < 0.1°
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 Good quality measurements for hydrology networks, greenhouse climate control


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