Hart Scientific's calibrator can calibrate thermometers at both hot and cold temperatures simultaneously.

Model 9009 is capable of calibrating thermometers at both hot and cold temperatures simultaneously. Model 9009 from Hart Scientific Inc. combines two dry-block units into a single, portable calibrator, eliminating the need for two separate temperature sources for field testing. The cold block achieves temperatures from 5 to 230°F (-15 to 110°C) with calibrated accuracy of I0.2°C and stability of I0.2°C. The hot block covers 95 to 662°F (35 to 350°C) with accuracy of I0.6°C and stability of I0.2°C. A proprietary controller controls both blocks.

October 2000, RS# 206