Description

The housing design of the CMP 22 includes a screw-in drying cartridge that can simply be removed using a coin. This allows the desiccant to be replaced as required onsite, without the need for any specialist tools, using the convenient refill packets. The CMP 22 also features a passive temperature compensation circuit with a standardised linear function.

The CMP 22 has a 32-junction thermopile sensing element, which features faster response, better linearity and a wider measurement range than the other CMP series pyranometers. Additionally, the CMP 22’s are individually optimised for temperature compensation and each sensors includes a separate 10K thermistor, or PT100 sensors to monitor the housing temperature for post-processing compensation adjustments. The two, 4mm very high quality quartz domes also a wider spectral range (200-3,600nm compared to 285-2,800nm), improved directional response (<5Wm² compared to <10Wm²) and reduced thermal offsets than the CMP21.

The integral bubble level is raised to the top of the housing and can be viewed without removing the redesigned snap-on sun shield, which also covers the connector. The connector with gold-plated contacts allows for easy exchange and re-calibration.

The CMP 22 significantly exceed the requirements of ISO 9060:1990 for a Secondary Standard Pyranometer and is the highest standard pyranometer available for scientific use in top level solar radiation monitoring networks such as the BSRN (Baseline Surface Radiation Network) or WMO (World Meteorological Organisation).

Diagram

Specification