Inventory pressure gauge of the common problems and solutions

Pressure gauge is used for measuring less than or greater than the atmospheric pressure, used for measuring fluid flow ( Gas, liquid) Pressure gauges, has extremely extensive application in industry. But gauges in use process will inevitably have a little problem, these problems may not cause any bad results, but it will give the user must go to. Instrument take you take stock gauges the common problem in use process, and provides some solutions, let everybody can better use the pressure gauge. Problem a: pressure after the pointer can not return to zero. This problem may be the pressure gauge pointer bent or loose, can use tweezers correction, through out again after the testing should be ok; It is also possible that there is friction between drive gear, if that's the case, adjust the drive gear backlash. Problem two: pressure gauge pointer is beating or stagnated motionless. The reason this happens is more, we take a look at one by one. The first is that a pointer with the surface of the glass or dial collision and friction, this is a correction can be a pointer, thickening glass washer or below will pointer shaft hole bigger some. The second is the center of the pressure gauge gear shaft bending, leading to different diameter of axle heart, don't match, this time you should go to the wash wheel hitting straight with wooden hammer correction or vise straightening. The third condition is pressure gauges of two gears meshing with dirt, at this time as long as you remove the two gear cleaning will fix the problem. The fourth kind of circumstance also is the last one is the pressure gauge between the connecting rod and gear sector activity screw loose screws not activity or activities, the connecting rod with file file a bit thin. Question 3: pressure gauge measuring highs, the pressure gauge pointer does not move or moves very much. The problem that pressure not to spring tube, should check the pressure gauge at this time will check the sealing gasket connection joint channel closed. If joints where there is no problem, prove that pressure gauge of internal blocked, this time should be cleaned. Question 4: in the process of pressure gauge pressure pulse, dull, the phenomenon such as variation is larger. Appear this problem is characterized by being test table, with the increase of pressure error amount to increase or decrease, in the entire measuring range, the pointer reading always differ with standard refers to a fixed value. This is because the system error caused by the pointer installation is correct and, as long as want to adjust the error to adjust the installation position of pointer, can be eliminated, if the error is small, micro rotating the dial also can be solved. Hope these methods can help in the use of pressure gauge.