Matters needing attention after the verification of pressure gauge is completed

1. Check whether all screws 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. The pressure gauges that fail to pass the verification shall be degraded and used, and the mark of accuracy grade shall be changed.

3. Repair the paint stripping part of the pressure gauge, 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.

Several aspects of selection of stainless steel pressure gauge

First, the dial diameter of stainless steel pressure gauge:

The dial diameter of stainless steel pressure gauge is the diameter of the shell of the pressure gauge by default, which is commonly used: 50mm,60mm,100mm and 150 mm.

Second, the shell material of stainless steel pressure gauge:

The shell material of stainless steel pressure gauge will be 304 stainless steel and 316L stainless steel, so we should choose the shell material of pressure gauge according to the specific environment. If the environment has great influence, we can choose diaphragm pressure gauge.

Third, the installation method of stainless steel pressure gauge:

The installation methods of stainless steel pressure gauges can be divided into two types: axial (back connection) and radial (bottom connection), but in reality, customers can choose the installation method according to the actual situation. If it is panel installation, the axial direction can choose the front flange edge or the rear fixed bracket, and the radial direction can choose the front flange edge or the rear fixed edge.

Fourthly, the measuring medium of stainless steel pressure gauge:

The liquid contact material of stainless steel pressure gauge is only stainless steel, namely 304 stainless steel and 316 stainless steel.

Fifth, liquid filling of stainless steel pressure gauge:

We found that many pressure gauges are filled with liquids in some environments with relatively large mechanical vibration. In fact, the main function of these liquids is to increase the resistance and effectively prevent the pointer of the pressure gauge from constantly vibrating, so that we can read the pressure value accurately. Generally, it is commonly used near the pump or in the environment with relatively strong vibration.

Sixth, the medium temperature of stainless steel pressure gauge:

Generally, the measuring medium temperature of copper alloy measuring elements is +80 degrees, and that of stainless steel is +200 degrees. However, if the pressure gauge you choose is a liquid-filled shock-resistant pressure gauge, the highest temperature of the medium at this time can only reach +100 degrees; If the temperature is too high, but it must be earthquake-resistant, the way we adopt is condensation bend.

Seventh, the measuring range of stainless steel pressure gauge:

Because the pressure gauge displays the pressure value by measuring the deformation of the element and driving the pointer to rotate through the amplification mechanism, we should also pay attention when selecting the measuring range. Generally, the maximum pressure measured is 3/4 or 2/3 of the measuring range of the pressure gauge. If the pressure is large, the pointer changes little, and the read pressure value will be inaccurate. If it is small, the pressure gauge will be damaged due to overload.

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