The CH-5 Chiller Unit is designed for use in conjunction with the Tempcal 140 H calibrator to enable an actual temperature
of -40°C.

The minimum temperature achievable on the Tempcal 140 H is 45°C below ambient, but by artificially cooling the heat-sink of the units with water from the Chiller an actual temperature of -40°C can be achieved.

The unit is designed to run on distilled or de-ionised water.