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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.
CHP 1 fully complies with the most current ISO and WMO performance criteria for First Class Normal Incidence Pyrheliometer. Every CHP 1 is calibrated upon manufacture, and is supplied standard with a WRR (World Radiometric Reference) traceable calibration certificate.
The CHP 1 is fitted with a high quality connector for easy installation and maintenance. The screw-in drying cartridge is easy to remove and the replacement desiccant is supplied in convenient refill packets.
As standard, CHP 1 comes with both Pt-100 and 10k thermistor temperature sensors.
The instrument covers the total solar spectrum between 200 to 4000 nm. CHP 1 is intended for use with any model Kipp & Zonen two-axis Tracker.
The CHP 1 is the perfect choice for high accuracy direct solar radiation 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°C to +80°C |
| Field of view | 5° ±0,2° |
| Non-linearity | < 0,2 % |
| Maximum solar irradiance | 4000 W/m² |
| International standards (ISO) | First Class |
| Overall accuracy | < 1 % |
