Fast, precise, electromechanical thermostats

By Control Engineering Staff October 1, 2001

Ashland, Mass. – Thermoswitch temperature controllers are available in a full line of electro-mechanical thermostats that require no external power and are said to be economical, robust alternatives to electronic temperature controllers in many applications. The temperature controllers are tubular devices featuring an outer shell made of a high-expanding metal and internal struts made of low expanding metal with a pair of electrical contacts between them. When the temperature of the media being measured changes, a corresponding change in the spacing of the contacts provides on/off control with a small differential, resulting in