Emissiometer R

The emissiometer R is especially suited for measurements on tubes or waved surfaces and consists of a tunnel, which is heated to 70°C and serves as a source of diffuse thermal radiation. The radiation, which is reflected by the sample is measured by a detector which is sensitive for wavelengths in the range from 8 µm to 14 µm.

 

The calibration of the measured signal is done measuring two references with known emittance values in the mentioned wavelength range: a sample with a high emittance such as glass and a sample with a low emittance or ideally with an emittance close to the emittance of the samples to be measured.