What is the reason for the bend of the pointer?
After the instrument has been used for a period of time, when the pressure is stable, the pressure gauge or the instrument is removed for maintenance, people will find that the original straight sword-shaped pointer has become a scimitar-shaped pointer, which will be left on the "back of the knife" Small bumps or notches of different sizes, it is obvious that the pointer has been bent on the stainless steel pressure gauge.
Generally, the pointer of a stainless steel pressure gauge is bent into two situations: one is that the "back of the knife" is bent downward relative to the disc stop; the other is that the "back of the knife" wants to bend up relative to the disc stop nail.
1. The former is caused by excessively fast and excessive pressure relief when the instrument is working, causing the pointer to be violent and the pressure gauge repeatedly hitting the plate to stop the nail. This kind of situation is generally on the underside of the pointer, where the pointer and the disc stop nail are in contact, and you can see the traces of the impact. When the impact is severe, a gap in front of you will be left in this part.
2. The latter is due to the thermal resistance when the meter is in use, the overpressure is too large, too fast, which causes the pointer to hit the plate stop in the clockwise direction and bend. Similarly, there will be a gap in front of the pointer on the upper side of the pointer.
3. The material of the pointer is generally aluminum alloy sheet. If the material of the pointer is too thin, the material is too soft, which is one of the reasons that the pointer thermal resistance is easy to bend.
