Typically are heat flux measurement of walls, roofs and building facades as well as measurement of heat flux of insulation of refrigerator cabinets, cold storage houses, fire-protective clothing, etc.

The sensors consist of thermocouples connected in series, which are incorporated in a black plastic body and generate a voltage signal that is proportional to the heat flux density passing through the sensor.

They are equipped with an integrated temperature sensor that generates a voltage signal proportional to the surface temperature.

All signal amplitudes are sufficiently large to facilitate the direct signal processing with a conventional voltmeter or data acquisition system.