This black body source has been introduced to meet the demand for a simple, cost-effective, but high accuracy
calibrator for the calibration of thermal imagers and infrared thermometers used at temperatures near ambient.
A 70mm diameter, ridged plate is heated or cooled with an internal solid-state thermoelectric heat pump. The
temperature of the plate can be set from 20°C to 45°C, to a resolution of 0.01°C.
Evaluation showed the advantages of fitting a stainless steel tube around the plate to give better uniformity
and less sensitivity to drafts and other ambient temperature effects.