Is the shock pressure gauge water pressure gauge? For the first time to buy pressure gauge people will think that the shock pressure gauge is water pressure gauge, which is added with water, will ask Guangshun pressure gauge sales, pressure gauge inside add what is water?
In fact, the shock pressure gauge is not added water but oil. According to the temperature of the working environment of the pressure gauge, there are two kinds of oil: glycerol and silicone oil.
Glycerin: Mainly earthquake-resistant
Silicone oil: is also anti-seismic effect, but silicone oil than glycerol low temperature resistance, if the outdoor 0 degrees below glycerol will crystallize, and silicone oil to minus 40 degrees will crystallize.
So in the purchase of seismic pressure gauges must ask customers about the specific working temperature, because less than 0 degrees can only use silicone oil.
