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Important features :
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The CHP 1 pyrheliometer is the most commonly used radiometer for the measurement of direct normal irradiance (DNI) and offers high accuracy and reliability.
The instrument has a quartz window to cover the total solar spectrum of solar radiation between 200 to 4000 nm.
CHP 1 is has a high quality connector for easy installation and maintenance, the screw-in drying cartridge is easy to remove and replacement desiccant is supplied in convenient refill packs.
Kipp & Zonen Solys-Sun Trackers are supplied pre-fitted with the mountings for a CHP 1.
As standard CHP 1 comes fitted with both 10 kΩ thermistor and Pt-100 and temperature sensors; so that the small temperature dependency of sensitivity can be corrected in post-processing using the supplied test data.
The CHP 1 is the perfect choice for high accuracy direct solar irradiance measurements.
Specifications
| Spectral range (50% points) | 200 to 4000 nm |
| Sensitivity | 7 - 14 µV/W/m² |
| Response time | < 5 s |
| Zero offset B | < 1 W/m² |
| Temperature dependence of sensitivity (-20ºC to +50ºC) | < 0,5 % |
| Operational temperature range | -40...+80°C |
| Field of view | 5° ±0,2° |
| Non-linearity | < 0,2 % |
| Maximum solar irradiance | 4000 W/m² |
| International standards (ISO) | spectrally flat, class A |
| Overall accuracy | < 1 % |
