Mode of operation

A silicon solar cell can be used as an irradiance sensor, because the short-circuit current is proportional to the irradiance.

Our sensors are build out of a monocrystalline Si solar cell connected to a shunt. Due to the low resistance of the shunt the cell operates next to short-circuit.

To minimize influences of temperature to the measuring signal all of our sensors with the extension „TC“ have an active temperature compensation via a temperature sensor laminated to the back surface of the solar cell.


All sensors are calibrated in artificial sunlight against a reference cell calibrated at the Physikalisch-Technische Bundesanstalt (PTB, National Metrolo gy Institute of Germany).


Mechanical Construction

The solar cell is embedded in EthylenVinyl-Ace tat (EVA) between glass and Tedlar.

The laminated cell is integrated into a case of powder-coated aluminium. Therefore the sensor construction is comparable to that of a standard PV module.

The electrical connection is realized by a 3m cable or a water proof (IP67) connector


Optional Temperature Measurement

Additionally to the irradiance measurement our silicon sensors with the extension “-T” are able to measure the temperature of the solar cell using a temperature sensor laminated to the back of the cell.

This solar cell temperature can approximately be used as module temperature.


Read here the one-year warranty details 


Solar Radiation Sensors are produced by 

Learn more about MENCKE & TEGTMEYER products

Learn more about sensors software