Analysis of Common Troubles of Stainless Steel Gauge
The use of stainless steel gauge
The stainless steel gauge is widely used in petroleum, chemical, chemical fiber, metallurgy, power station, food and other industrial sectors. They are used to measure the pressure of various fluid mediums in the process of corrosion resistance and high temperature resistance.
The stainless steel gauge is composed of a pressure system (including joint, spring pipe, current limiting screw, etc.), gear transmission mechanism, indicating device (pointer and dial) and shell (including case, watch cover, watch glass, etc.).
For the instrument that is filled with liquid (usually silicone or glycerin) in the shell, it is able to withstand the vibration of the working environment and reduce the fluctuation of the pressure of the medium.
The analysis of common troubles of stainless steel gauge
The first is that the needle does not move or move very rarely.
The reasons may be the following: 1. The check valve does not open; 2. The pointer is loose and the end of the pointer touches the dial; 3. The central hole of the seal gasket of the verifier connector is blocked and the working medium cannot be passed into the pressure gauge; 4. The inside of the verifier oil cup is too dirty, and it blocks the spring tube or the transmission channel; 5. The rubber bowl at the top of the calibrator is damaged or the spring tube ruptured and caused a large leakage of oil.
The second is the pointer backwards.
The leakage of the validator oil or the oil cup needle valve is not smooth and the sealing is not good, and it may also be the spring tube cracks. These failures are common and easy to solve.
The third is the jumping needle phenomenon.
The tooth teeth of the sector gear may be corroded, worn, and filth. Or the pointer axis tilting, and it is bending with the scale disc single side friction.
The fourth is that the pointer does not return to zero.
The return error and the light strike displacement are very poor. The filaments are not compact or large or loose.
Installation notes:
The selection of pressure points should reflect the pressure measured.
(1) We should select the section of the pipe that is flowing in the line of the measured medium. Do not choose where the line bends, forks, dead ends, or other forms of the vortex.
(2) When measuring the pressure of the flow medium, the pressure point should be perpendicular to the flow direction to clear the burr.
(3) When measuring the pressure of the liquid, the pressure point should be in the lower part of the pipe, so that no gas can be deposited in the guide tube. When measuring the gas, the pressure point should be above the pipeline so that no liquid can be deposited in the guide tube.
