The reason why the measuring pointer in the pressure gauge is interrupted

When the pressure gauge is in use, people sometimes find that the pointer of the instrument suddenly becomes shorter. If you look closely, it turns out that the pointer of the pressure gauge is half missing. The interruption of the pointer is a very serious fault, which makes the pressure gauge lose its most basic function-displaying the pressure value.

The pressure gauge pointer is interrupted for the following two reasons:

Generally speaking, the pointer is interrupted because the pointer material is too soft and the rigidity is poor. After a certain impact, the pointer is bent in a light way, but it is interrupted in a heavy way.

Due to improper operation of the field staff, such as excessive pressure relief. So that the pointer hits the nail back at a very fast speed, and the pointer is interrupted after repeated times.

If the pressure gauge pointer is interrupted, the main responsibility should be the manufacturer. The rigidity of the pressure gauge pointer is too poor, or the prompt is insufficient (users should be reminded to install a pressure damper or a pressure overpressure protector when measuring special pressure in a specific environment) and so on.

When the pointer of the pressure gauge is interrupted, the user should first contact the factory to determine the reason for the interruption of the pointer (the reason is determined at this time to ensure the safety of other instruments purchased in the same batch). If it is the manufacturer's fault, the pointers of other pressure gauges should be checked in time. If it is used improperly, make

The employing unit should be corrected in time.

When the pressure gauge manufacturer purchases the pressure gauge pointer material, it must meet the requirements in the drawing design, the brand must be correct, and the mechanical properties must be qualified, especially the rigidity. For the pointer of special purpose pressure gauge, it is better to use materials imported from foreign countries if the materials in the domestic market can not meet the design requirements.

Material, can also negotiate with users, re-election of other materials or termination of production. The user of the pressure gauge shall operate in strict accordance with the requirements in the instruction manual of the pressure gauge, and if necessary, a pressure damper or a pressure overpressure protector can be installed to protect the pressure gauge pointer from damage.

Matters needing attention after the verification of pressure gauge is completed

1. Check whether all the screws of the pressure gauge have been tightened, and each screw is not allowed to be loose. It is particularly important to tighten the screws that specially fix the movement and the indicating adjustment screws. It should be noted that after the screw of the fixed movement is installed, the notch at the common top for torsion should not be horizontal to avoid the hairspring being embedded.

2. Unqualified pressure gauges and pressure instruments shall be degraded and used, and the mark of accuracy grade shall be changed.

3. Repair the paint stripping part, check whether the color of the lining ring meets the requirements of the medium used, wipe off the dirt on the dial and glass, and then install the shell.

4. After the pressure gauge shell is installed, check whether the pointer shaft and the pointer piece touch the glass, and then gently shake the watch body to see if there is any noise, so as to avoid parts or sundries from entering.

5. The device is sealed with lead, stamped with qualified seal, and then the stainless steel pressure gauge is removed from the connector of the calibrator and delivered for use.

6. After the daily work, the standard meter should not be left on the calibrator to prevent the zero position from changing due to collision and vibration. The spring tube of the standard meter should be cleaned regularly to remove the dirty liquid brought by the checked meter during calibration, so as to prevent corrosion and affect the accuracy for a long time.

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