Selection and Maintenance of Precision Pressure Gauges

Precision pressure gauges are mainly used to verify common industrial pressure gauges, and can also be used to measure the pressure of high-precision working media online. It is a commonly used measurement standard in the fields of pressure measurement, inspection and verification, inspection and verification and other related fields of pressure parameters. Precisely measure the pressure of various non-corrosive, non-crystalline, non-solidifying media such as copper alloys and steel alloy structures.

1. Selection of precision pressure gauges

The range of the digital pressure gauge is generally 1.5 to 3 times the working pressure of the equipment, preferably 2 times. If the range of the selected digital pressure gauge is too large, due to the digital pressure gauge of the same accuracy, the larger the range, the greater the allowable error value and the deviation of the naked eye observation, which will affect the accuracy of the pressure reading.

On the contrary, if the range of the digital pressure gauge selected is too small and the working pressure of the equipment is equal to or close to the scale limit of the digital pressure gauge, the elastic element in the digital pressure gauge will be in the maximum deformation state for a long time, which is easy to deform and cause digital pressure. The error of the table increases and the service life decreases. Therefore, the operating pressure range of the digital pressure gauge should not exceed 60-70% of the scale limit.

2. Maintenance of precision pressure gauges

The accuracy of the working precision digital pressure gauge is expressed as a percentage of the allowable error to the limit value of the dial scale. The accuracy level is generally marked on the dial. When choosing a digital pressure gauge, the accuracy should be determined according to the pressure level of the equipment and the actual work needs.

Dial diameter In order to enable the operator to see the pressure value accurately, the dial diameter of the digital pressure gauge should not be too small. If the digital pressure gauge is installed high or far away from the post, the dial diameter should be increased.

If the medium used by the precision digital pressure gauge is corrosive, different elastic element materials must be selected according to the specific temperature, concentration and other parameters of the corrosive medium, otherwise the expected purpose will not be achieved.

Pay attention to use and maintenance on a daily basis, regularly check, clean and record the usage.

The general verification period for precision digital pressure gauges is half a year. Mandatory verification is a legal measure to ensure reliable technical performance of digital pressure gauges, accurate value transmission, and effective guarantee of safe production.

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