SP Lite2 uses a photodiode detector, which creates a voltage output that is proportional to the incoming radiation. Also due to the unique design of the diffuser, its sensitivity is proportional to the cosine of the angle of incidence of the incoming radiation, allowing for accurate and consistent measurements.
The SP Lite2 Silicon cell photo-diode pyranometer offers an economical solution for the reliable routine measurement of incoming global solar irradiance. It has a conical diffuser that offers excellent directional (cosine) response, causes rain to run off and is easy to keep clean. The SP Lite2 can be used under all weather conditions and is designed for a long operating life with simple maintenance. Spectral range 400 to 1100nm. The SP Lite2 has a similar spectral response to PV solar panels and is therefore an ideal pyranometer to use with a handheld display and data logger for field testing existing or proposed photovoltaic power systems.
The CVF4 Ventilation unit is a low maintenance ventilation unit with a fan and inlet filter that provides a flow of clean air over the dome of a radiometer. The integrated heater allows the air to be warmed when necessary. The fan of the CVF4 runs continuously to reduce dust and dirt settling, to dissipate rain drops and to stabilise the dome temperature. A tacho output from the fan gives two pulses per revolution and allows remote monitoring of the fan operation using a data logger. The CVF4 is designed to be used with Kipp & Zonen CMP and SMP series pyranometers, the CGR 4 pyrgeometer, and the CUV5 total UV radiometer.
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