Common failures and choices of stainless steel pressure gauges
Simple analysis of common failures of stainless steel pressure gauges.
One is that the pointer does not move or rarely moves. The reasons may be the following:.
1. The calibrator valve is not opened.
2. The pointer is loose and one end of the pointer touches the dial.
3. The center hole of the sealing gasket of the calibrator joint is blocked, and the working medium cannot be introduced into the pressure gauge.
4. The medium in the oil cup of the calibrator is too dirty, blocking the spring tube or the transmission channel.
5. The rubber cup on the top of the checker screw is damaged or the spring tube is broken, causing a lot of oil to leak.
The second is that the pointer is falling back, the calibrator leaks oil or the pressure gauge is not smooth because the needle valve of the oil cup is not smooth, resulting in poor sealing, or there may be cracks in the spring tube. These faults are common and easy to solve.
The third is the phenomenon of skipped needles. The teeth of the sector gear may be rusted, worn, stained, or the pointer shaft may be tilted or bent and rubbed on one side of the dial.
Fourth is that the pointer does not return to 0, the return error and tapping displacement are out of tolerance, the balance spring is not sufficiently tightened or stretched, or the pointer is loose.
