What is a Blackbody furnace?

A blackbody furnace is a device used for inspection and calibration of equipment using infrared rays. The target device is placed in a furnace that imitates a blackbody that absorbs all wavelengths, and the light is emitted from a reference light source to the outside. Performance can be evaluated without the influence of the environment.
There are two main types of blackbody furnaces: a cavity blackbody furnace that has a hollow structure light source and is suitable for high temperature measurement, and a metal coated with high emissivity paint as the light source for low temperature and large objects. There is a flat blackbody furnace suitable for.

Application of Blackbody furnace

Typical applications for blackbody furnaces are inspection and calibration of non-contact thermometers. The non-contact thermometer uses infrared rays for measurement, and it is necessary to periodically inspect and calibrate the temperature indicated, but at this time, it is a light source that is not affected by the external environment and the emissivity is kept constant. And an environment where the temperature can be set is required. The blackbody furnace approximately creates a state of emissivity 1 that can detect the temperature with the highest accuracy in the device, and by checking the difference between the theoretical temperature and the displayed temperature of the measuring device, the measuring device It is possible to check the deviation.

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