Text version of the page

CHP 1 Pyrheliometer

thermistor temperature sensors are fitted as standard, to allow use of the individual temperature response data supplied with each CHP 1. Thanks to the signal cable connector and screw-in desiccant cartridge the new design is easy to install and maintain. The specifications exceed ISO and WMO performance criteria for First Class Normal Incidence Pyrheliometers. Every CHP 1 is supplied with a calibration certificate traceable to the World Radiometric Reference.

Specifications

CHP 1 is a new pyrheliometer that builds on the legacy of the CH 1, offering the reliability and durability of its predecessor together with important improvements. The detector is similar to that used in the CMP 21 and 22 pyranometers, which minimizes the influence of ambient temperature fluctuations and provides a fast response time. Both Pt-100 and 10 k

ISO CLASSIFICATIONResponse time (95%) Zero offsets due totemperature change (5 K/hr) Non-stability (change/year)Non-linearity (0 to 1000 W/m²) Temperature dependenceof sensitivity ± 0.5%(-20 to +50°C)5 s± 0.5%± 0.2%7 to 14 µV/W/m²10 to 100 Sensitivity -40 to +80°C 200 to 4000 nm4000 W/m² First Class 0 to 15 mV Impedance Ω Operating temperature Spectral range (50% points) Typical signal output foratmospheric applications± 1% ± 1 W/m² Maximum irradiance Expected daily uncertaintyFull opening view angleRequired tracking accuracySlope angleWeight (excluding cable)5° ± 0.2° ± 0.5° from ideal1° ± 0.2°1 kg

Applications

CHP 1 is the best all-weather pyrheliometer available for continuous measurements of direct solar radiation and exceeds the specifications for high end solar radiation networks, such as the Baseline Surface Radiation Network (BSRN). These networks need accurate and reliable long-term measurements for climate change investigations.An industrial sector with similar requirements is renewable energy. For research into photo-voltaic systems and materials, accurate direct solar irradiance data is needed. When ‘prospecting’ for sites to locate solar farms, the incoming energy available throughout the year is a key part of the decision making process.

Optional cable lenghts 25 m and 50 m. Pt-100 temperature sensor as standardCHP 1 has a standard cable lenght of 10 m.Fitted with both 10 K Thermistor and Note: The performance specifications quoted are worst-case and/or maximum valuesSupplied with individual temperature dependence test data
74 mm 76 mm

Building a system

A pyrheliometer needs to be pointed at the sun at all times so that the solar disk always falls within the field of view of the instrument. Kipp & Zonen sun trackers provide a stable mounting to keep the pyrheliometer pointing at the sun to accurately measure the direct solar radiation. More details can be found in our dedicated sun trackers brochure.

314 mm 38 mm Ø

Go to www.kippzonen.com for your local distributor

HEAD OFFICE

Kipp & Zonen B.V. +31 (0) 15 2755 210 Delftechpark 36, 2628 XH DelftP.O. Box 507, 2600 AM Delft The Netherlands T: F: +31 (0) 15 2620 351 info@kippzonen.com

4414316-0806

Kipp & Zonen B.V. reserve the right to alter specifications of the equipment described in this documentation without prior notice