What is shockproof pressure inside the oil oil?

Earthquake is a kind of pressure gauge pressure gauges, it works the same as pressure gauge, is through the form of sensitive element ( Bourdon tubes, bellows, bellows) Elastic deformation, the pressure deformation by the transformation of movement in table to Pointers, cause the hands to display the pressure. It is the oil filled to the normal pressure list, oil-filled main purpose is to reduce the pointer in relatively large variations in pressure buffer to zero, so that we can effectively ensure the sensitivity of pressure gauge. General pressure table filling oil is glycerin and silicone oil. Shockproof pressure table generally filled with silicone oil or glycerine, both filling oil seismic function is the same, the difference is that the degree of low temperature resistant, silicone oil than glycerol good low temperature resistance, when using the environment temperature reaches - 20 ℃, glycerin is crystallized, and silicone oil or maintain normal working condition. So, choose silicone oil or glycerin, is determined by the table to ambient temperature.