Kipp & Zonen CMP 3 Instruction Manual

Also see for CMA 11: Instruction manual

Kipp & Zonen CMP 3 Instruction Manual Manual pdf 10 page image

.CMP pyranometers and CMA albedometers do not require power to operate. Radiation falling onto the sensing element producesa small analogue output voltage.CMP 3 is smaller and lighter than the other CMP series pyranometers. It features a 64-junction thermopile sensing element witha highly absorptive and spectrally flat black coating to capture incoming radiation and convert it to an electrical signal. Thisdetector is protected by a high quality glass dome which is 4 mm thick. The housing is completely sealed.CMP 6 uses the same sensing element as CMP 3 but has improved performance due to the double glass dome construction and theincreased thermal mass of the larger housing. The glass used has better transmission of ultraviolet radiation than the CMP 3 glass.The two high quality concentric domes, 2 mm thick, reduce directional error and improve thermal isolation. The radiometriclevelling is more accurate and CMP 6 has a drying cartridge with replaceable desiccant.CMP10 and CMP 11 have a 32-junction thermopile sensing element which features faster response, better linearity and a widermeasurement range than the CMP 3 and CMP 6. CMP10 and CMP 11 have built-in temperature compensation. The CMP10 hasinternal desiccant that lasts for 10 years and the CMP 11 has a removable drying cartridge.CMP 21 is similar to the CMP 11 but has individually optimised temperature compensation and a sensor is fitted to monitor thehousing temperature. Each instrument is supplied with its own temperature and directional response for post-processing ofrecorded data by the user. A Pt-100 temperature sensor can be ordered instead of the standard 10 kΩ thermistor.CMP 22 has all the features of CMP 21 but uses two 4 mm thick very high quality quartz domes for a wider spectral range and reducedthermal offsets. Because of the high optical quality and refractive index of these domes the directional error is greatly reduced.CMA 6 is an albedometer comprised of two CMP 6 sensing element and dome assemblies in a single housing with two signaloutputs on one signal connector.CMA 11 uses two of the same sensing elements as fitted to the CMP 11 pyranometer, for similarly improved performance over the CMA 6.Features and specifications of the CMP and CMA instruments are explained later in this manual.1.1.2 International StandardsCMP 3 exceeds the requirements of ISO 9060:1990 for a Second Class Pyranometer.CMP 6 and CMA 6 are fully compliant with the requirements of ISO 9060:1990 for a First Class Pyranometer.CMP10, CMP 11 and CMA 11 are fully compliant with the requirements of ISO 9060:1990 for a Secondary Standard Pyranometer.CMP 21 and CMP 22 significantly exceed the requirements of ISO 9060:1990 for a Secondary Standard Pyranometer.CMP series pyranometers and CMA series albedometers are calibrated in accordance with Annex A.3 of ISO 9847 ‘Calibration ofField Pyranometers by Comparison to a Reference Pyranometer’. Annex A.3 refers to ‘Calibration Devices Using Artificial Sources’.Calibrations are traceable to the World Radiometric Reference (WRR) in Davos, Switzerland.CMP series pyranometers comply with IEC 60904-1 ‘Photovoltaic devices - Part 1: Measurement of Photovoltaic Current-VoltageCharacteristics’.10