Discussion of effective emissivity calibration for blackbody furnace

Blackbody furnace is essential equipment in temperature measurement.In non-contact temperature measurement,it is a temperature measurement standard device in instrument calibration.At the same time,it is a standard temperature source.Blackbody furnace plays a pivotal role in our country's transfer radiation thermometer diagram.The value e of the effective emissivity of blackbody cavity radiation is an important parameter in describing the quality of blackbody furnace.But there is not associated calibration method,which leads to resulting confusion in the temperature measurement.Thus blackbody must be traced to the source of benchmark blackbody.