Temperature controllers.New series of temperature controllers have been added to the line of Thermoswitch devices from Fenwal Inc. Series 560 (shown) uses a thermistor Thermistor An electrical resistor with a relatively large negative temperature coefficient of resistance. Thermistors are useful for measuring temperature and gas flow or wind velocity. as a heating element Noun 1. heating element - the component of a heater or range that transforms fuel or electricity into heat bar - a heating element in an electric fire; "an electric fire with three bars" , and is designed to operate at 0 600F within an accuracy of 0.25% full scale. Series 540 is a low-cost remote indicating temperature controller, and is accurate to within 1% of full scale. Operating on a liquid-filled bulb and capillary capillary (kăp`əlĕr'ē), microscopic blood vessel, smallest unit of the circulatory system. Capillaries form a network of tiny tubes throughout the body, connecting arterioles (smallest arteries) and venules (smallest veins). system, it transmits temperature changes through a bellows bellows, expansible, gas-tight chamber used to pump or store a gas. One of the simplest and most familiar types of bellows is the manual one used for providing a forced draft to a fire. The expansible chamber consists of a leather bag with pleated sides. assembly to the indicating pointer by a mechanical linkage. |
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