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. This blackbody calibration source can fine-tune your infrared thermal sensors at near-ambient temperatures. The Model 988 is one of the most accurate low temperature calibrators on the market.