The vacuum pressure gauge is used in the same way as the pressure gauge and is installed on a system that both evacuates and pressurizes. The upper limit of pressure is determined according to the same rules as the pressure gauge, with an upper limit of 1.5 times the operating pressure. When vacuuming, the pointer moves below zero with zero as the boundary, and when pressurized under normal pressure, the pointer moves above zero.
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 measurement range for normal use 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.
When using a vacuum pressure gauge, if there is a malfunction such as a malfunctioning pointer or loose internal components that cannot work properly, it should be repaired or the manufacturer should be contacted for repair. Vibration and collision during use should be avoided to prevent damage.
So that's all for the introduction about vacuum pressure gauges above. I hope it can be helpful for your understanding.
