A vacuum pressure gauge is an instrument used to measure pressures below atmospheric pressure. The pressure vacuum gauge is based on atmospheric pressure and is used to measure instruments that are greater than or less than atmospheric pressure.
Pressure vacuum gauges are widely used in gas transportation, pipeline liquids, and closed containers to measure the pressure of various liquids, gases, vapors, and other media that are non corrosive, non explosive, non crystalline, and non condensable. It has the advantages of simple structure, high cost-effectiveness, intuitive indication, and reliable performance.
Vacuum pressure gauge is a commonly used measuring pressure gauge with certain applications in many fields. Precautions for using a vacuum pressure gauge, such as the measurement range of the vacuum pressure gauge, the operating temperature of the vacuum pressure gauge, and various other issues.
When using a vacuum pressure gauge, the ambient temperature should be -40~70 ℃ and the relative humidity should not exceed 80%. If it deviates from the normal operating temperature by 20 ℃, it must be included in the temperature additional error.
When using a vacuum pressure gauge, it must be installed vertically and strive to be at the same level as the measuring point. If the difference is too high, it will be included in the additional error caused by the liquid column, which does not need to be considered when measuring gases. Block the explosion-proof port at the back of the watch case during installation to avoid affecting the explosion-proof performance.
The normal measurement range of a vacuum pressure gauge should not exceed 3/4 of the upper measurement limit under static pressure and 2/3 of the upper measurement limit under fluctuation. Under the above two pressure conditions, the minimum measurement of the large pressure gauge should not be lower than 1/3 of the lower limit, and all vacuum parts should be used when measuring vacuum.
That's all for today's introduction. I hope it can be helpful for your understanding.
