Photovoltaic Reference Cells for PV Monitoring

Our photovoltaic reference cells offer an economical but robust and reliable solution for measuring solar irradiance levels, particularly for monitoring photovoltaic systems. The design of these silicon solar irradiation sensors (Si sensors), which corresponds to that of a photovoltaic module, make these sensors ideally suited as a reference for monitoring photovoltaic systems. The spectral sensitivity, which corresponds to that of photovoltaic modules, and the very similar incident angle modifier, enable a precise analysis of photovoltaic yields using measured values from the sensor.

We have been manufacturing various types of Si sensors since 1994. So far, we have sold several 10,000 pv reference cells worldwide.

The Measurement Uncertainty of all Si sensors with RS485 and the Si-mV-85-Pt100(0) is class A as per IEC 61724-1. All other Si sensors are class B. The Measurement Uncertainty of our pv reference cells with temperature compensation depends on the sensor type. The digital Si sensor have in the range of 100 to 1500 W/sqm a uncertainty of ±1.0 W/qm ± 2.0% of reading.

All our pv reference cells have consistent measuring ranges of the solar irradiance (0 to 1500 W/sqm) and the internal temperature of the sensor cell (-40 to +90°C).