{"id":54277,"date":"2022-03-29T10:43:47","date_gmt":"2022-03-29T02:43:47","guid":{"rendered":"https:\/\/unicrown-tw.com\/test-the-air-tightness-of-the-vacuum-pressure-gauge\/"},"modified":"2022-03-29T11:34:57","modified_gmt":"2022-03-29T03:34:57","slug":"test-the-air-tightness-of-the-vacuum-pressure-gauge","status":"publish","type":"post","link":"https:\/\/unicrown-tw.com\/en\/test-the-air-tightness-of-the-vacuum-pressure-gauge\/","title":{"rendered":"In the production of industrial instruments, how to test and calibrate the air tightness of the vacuum pressure gauge?"},"content":{"rendered":"

Manufacturers of digital vacuum pressure gauges purchased our company’s model SE-150VH portable vacuum pump, which is mainly used to detect whether the air tightness of vacuum pressure gauges meet the specifications in the product process. The working medium is required to be clean air or non-toxic, harmless and chemically stable gas. After the vacuum gauge is disassembled or replaced, it needs to be calibrated before it can be used. The calibration method is: pump pressure calibration method<\/h2>\n

On-site vacuum pressure gauge calibration is generally divided into local calibration and centralized calibration. If the local environment is suitable and the number of calibration pieces is small, it can be completed with a portable calibration tool (vacuum pump).<\/p>\n

In addition, measuring instruments will have various effects due to changes in environmental conditions, and may have a subtle impact on the measured values of the instrument over time. If the vacuum pressure gauge becomes inaccurate, it may cause serious safety problems.<\/p>\n

Our recommended model SE-150VH is equipped with vacuum filter VFR-B, which can effectively prevent solid particles or dust from being sucked into the vacuum pump, reduce the wear of the pump, improve the reliability of operation and prolong the service life.<\/p>\n

Product Specifications<\/strong>
\nMax Vacuum: 740mmHg Flow: 70LPM
\nFor larger vacuum gauge testing, larger flow pumps are also available
\nSE-250V \/ Flow: 220LPM\u3001SE-250VH \/ Flow: 125LPM<\/a><\/p>\n

Industry and Application<\/strong>
\nIndustrial instrument manufacturing, instrument industry, laboratory, electronics industry, food industry, and biotechnology industry<\/p>\n

Operation Instructions<\/strong>
\nThe working principle of the vacuum gauge\/pressure gauge is that under the action of pressure and vacuum, the Baden tube produces elastic deformation and causes the displacement of the tube end. The displacement is amplified by the mechanical transmission mechanism and driven to the indicating device. The pressure or vacuum value on the side is indicated on the dial of the index.<\/p>\n

The indication value of the vacuum gauge is verified according to the graduation line marked with numbers. During the verification, the vacuum pump is turned on, and the pressure is gradually and steadily increased (or depressurized). Minutes later, and then check back in reverse order according to the original test point.<\/p>\n

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