What kind of oil is it in the oil filled pressure gauge?
Pressure meter which is filled with glycerin or silicone oil, and other can not, the general manufacturers are full of glycerol, because glycerol is cheaper, but the temperature of glycerol is relatively large, good point is filled with silicone oil.
Don't talk nonsense! What you said is the general vibration proof pressure gauge, silicone oil filling. Other oils do not work
The main purpose of the charging of the pressure gauge is to reduce the buffer of the pointer to the zero when the relative amplitude of the pressure is relatively large, so that the sensitivity of the pressure gauge can be effectively ensured. It mainly consists of two kinds of glycerin and silicone oil.Glycerol: mainly seismic action;Silicone oil: it is also earthquake resistant, but silicone oil is more resistant to low temperature than glycerin. If it is outside -20 DEG C, the glycerin will crystallize, but the silicone oil will also make the instrument work properly.
