Why oil filled pressure gauge leak

Oil filled pressure gauge is refers to the elastic element as the sensitive element, the measure and instructions above environment pressure meter, the widespread application, it almost throughout all of the industrial process and research fields. There are many reasons for the oil filled pressure gauge leakage, and common has the following kinds: 1, fill oil plug is not plugged or not good, 2, filling oil plug burst; 3, good cover ring flange didn't roll; 4, cover gasket between the circle and pan installation does not reach the designated position, not play the role of sealing. 5, base which is threaded hexagonal and pan between the seal was not well done, there might be a virtual welding welding. How to prevent oil filled pressure gauge leak? In the production of pressure gauge, the process should pay attention to the above phenomenon. And when testing oil filled pressure gauge, put the oil filled pressure gauge in 60 ℃ heating temperature is placed in the oven for 30 minutes, take out after for leakage phenomenon. Oil filled pressure gauge is a sensitive element (by table 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. When we test the oil filled pressure gauge, not only to test the appearance, such as precision, but also to examine whether it leak. How can the test oil filled pressure gauge whether the oil? Put the oil filled pressure gauge, the heating temperature of 60 placed in the oven for 30 minutes, take out after for leakage phenomenon.