Vacuum pressure gauge is a special and commonly used measuring instrument, many of which have certain application areas. There are also many issues that users need to pay attention to when using a vacuum pressure gauge. For example, various issues such as measurement range and temperature:
1. The ambient temperature for instrument use is -40~70 ℃, and the relative humidity is not greater than 80%. If it deviates from the normal application temperature by 20 ℃, it must be included in the temperature additional error.
2. The instrument must be installed vertically, striving 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 gas. Block the explosion-proof port at the back of the watch case during installation to avoid affecting the explosion-proof performance.
3. The normal measurement range of the instrument is not more than 3/4 of the upper measurement limit under static pressure, and the quantity that should not exceed 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.
4. If the instrument pointer malfunctions or the internal components become loose or cannot function properly during use, inspection and repair should be carried out, or the manufacturer should be contacted for repair.
5. Instruments should be protected from vibration and collision to prevent damage.
