Common bimetallic thermometer and oil filled the difference between bimetallic thermometer

Common bimetallic thermometer is a kind of measuring instrument in the field of low temperature detection, with a pointer pointing to represent the temperature. Can be directly measured in the process of various production - 80 ℃ ~ + 500 ℃ within the scope of vapor and liquid gas medium temperature. Bimetallic thermometer is mainly used in industry of element is one with two or more pieces of metal laminate composed of multilayer metal together, using two different metal working in the principle of expansion degree of different temperature changes. Is based on the ring around made of bent bimetallic strip. End is heated expands, turns the pointer, the instrument will show thermoelectric potential should value. Oil filled the principle of the bimetallic thermometer and common bimetallic thermometer is consistent, the difference is that oil filled bimetallic thermometer meter inside filling silicone oil or glycerin, commonly used in the environment of the vibration is larger. The main purpose of the oil charge is, for the sake of the pointer in a relatively large vibration environment to reduce the impact, so that we can effectively ensure the sensitivity of bimetallic thermometer, apply to produce vibration environment.

oil filled thermometer has filled silicone oil and glycerin two kinds, aseismatic function are the same, but the silicone oil than glycerol good low temperature resistance, if use environment - 20 ℃, glycerin crystallization, silicone oil or keep normal work.