Oil filled the inside of the bimetallic thermometer oil will have obstacles on the rotation of the pointer?

Oil filled bimetallic thermometer is a member of the bimetallic thermometer, it is on the basis of ordinary double metal thermometer, the silicone oil is filled in the header or glycerin, so oil filled the inside of the bimetallic thermometer oil will have obstacles on the rotation of the pointer? This is a common oil filled bimetallic thermometer, for it is the main purpose of the oil filled to a pointer in the vibration reducing relative change in the larger environment impact, so that we can effectively ensure the sensitivity of the thermometer, apply to produce vibration environment. So, oil within the header is not a hindrance to the rotation of the pointer. Oil filled type bimetallic 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. Purchased the oil-extended bimetallic thermometer, in order to ensure its accuracy, should pay attention to clean and check in time after use, and regularly test the measured value.