Abstract
Device allows to set up and keep constant temperature of air in test chamber. The heat exchanger is the part of the device.
Heating or cooling medium flows through the external circuit of exchanger and its temperature is controlled by accurate thermostat according to the temperature of the probe which is placed in the test chamber. The air from the test chamber flows through the inner circuit of the exchanger where it is heated or cooled according to the requirements.
In this way the time for temperature stabilization is shorten.