Oil filled bimetallic thermometer filling silicone oil and glycerin difference in where?

Oil filled bimetallic thermometer is in the ordinary course of the bimetallic thermometer header in filling the absorb of glycerin or silicone oil, oil filled bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, on the other end of the connection in a thin axis, become a free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial. Oil filled bimetallic thermometer oil-extended main purpose is to reduce the external vibration environment disturbance to the pointer, achieve the goal of ensure the sensitivity of the thermometer. Commonly used in industry, petroleum, chemical industry, power engineering, pipeline, etc. , mainly used in place of environmental vibration. So you know what the oil-extended bimetallic thermometer filling silicone oil and glycerin difference in where? Instrument a: oil-filled type thermometer has two kinds of silicone oil filling and glycerine, 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.