Why seismic pressure gauge leak?

The principle of seismic pressure gauge is mainly case inside filling the aseismic silicone oil or glycerin, this table oil leak reason in general there are three main aspects: 1. Base is the thread seal between hex and pan was not well done, there might be a virtual welding welding or not sealing gasket. 2. Cover gasket between the circle and pan, there is cause gasket askew when fastening cover ring, and did not have the effect of sealing. 3. Fill oil plug at the time of installation are not smooth or not installed in place. Seismic pressure gauge is to point to inside the pressure gauge shell injection oil, because oil can have obvious impact on the earthquake cushion, so that it can reduce the volatility, external vibration for pressure measurement, the effects of reading, through to the oil filled in the table, also parts of the machine lubrication effect and prolong the service life of the instrument at the same time. Choose must know when seismic pressure gauge pressure gauge working environment temperature, so as to choose the suitable oil.