CMP11 Pyranometer
CMP11 uses the temperature compensated detector technology originally developed for the CMP22 and is a step up in performance from the CMP6. It is particularly suitable for meteorological networks and the reduced response time of 1.66 seconds (63%) meets the requirements for solar energy applications.
- CMP11 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 CMP11'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 | CMP11 |
| 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) | 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) | < 7W/m² < 2W/m²² |
| 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) | < 10W/m² |
| Spectral selectivity (350 to 1500 nm) | < 3% |
| Tilt response (0° to 90° at 1000 W/m²) | < 0.2% |
| Temperature response | < 1% (-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 | Meteorological networks, PV panel and thermal collector testing, materials testing |
