CMP22 Pyranometer
CMP22 has all the features of CMP21 but uses very high quality quartz domes for a wider spectral range, improved directional response, and reduced thermal offsets. Because of the high optical quality of these domes the directional error is reduced below 5 W/m². Kipp & Zonen is confident that CMP22 is the best pyranometer currently available.
CMP22 has individually optimised temperature compensation and a standard thermistor sensor is fitted to monitor the housing temperature. Each instrument is supplied with its own temperature and directional (cosine response) test data.
| Specifications | CMP22 |
| Classification to ISO 9060:2018 | Spectrally Flat Class A |
| Sensitivity | 7 to 14µV/W/m² |
| Impedance | 10 to 100Ω |
| Expected output range (0 to 1500 W/m²) | 0 to 20mV |
| Maximum operational irradiance | 4000 W/m² |
| Response time (63%) | < 1.7s |
| Response time (95%) | < 5s |
| Spectral range (20% points) | 210 to 3600nm |
| Spectral range (50% points) | 250 to 3500nm |
| Zero offsets (unventilated) (a) thermal radiation (at 200 W/m²) (b) temperature change (5 K/h) | < 3W/m² < 1W/m² |
| Non-stability (change/year) | < 0.5% |
| Non-linearity (100 to 1000 W/m²) | < 0.2% |
| Directional response (up to 80° with 1000 W/m² beam) | < 5W/m² |
| Spectral selectivity (350 to 1500 nm) | < 3% |
| Tilt response (0° to 90° at 1000 W/m²) | < 0.2% |
| Temperature response | < 0.5% (-20°C to +50°C) |
| Field of view | 180° |
| Accuracy of bubble level | < 0.1° |
| Temperature sensor output | 10k Thermistor (optional Pt-100) |
| 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 | Scientific research requiring the highest level of measurement accuracy and reliability |
