The 988 is a low cost Blackbody source introduced to meet customer requirements for a simple, cost effective but high accuracy calibrator for the calibration of thermal imagers and infrared thermometers used at temperatures around ambient.
A 70 mm 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 with 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 draughts and ambient temperature effects.
| Temperature range | 20°C to 45°C |
| Target size | 70 mm diameter |
| Stability | ±0.2°C |
| Accuracy | ±0.2°C |
| Emissivity | 0.97 at ±0.02 |
| Heating time | 35 min |
General specifications
| Size | 230 x 225 x 115 mm |
| Weight | 4 kg |
| Display | Resolution: 0.01°C |
| Power supply | 12 V 60 Watts |



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