A vacuum pressure gauge is a measuring instrument that takes atmospheric pressure as a benchmark and is used to measure values less than atmospheric pressure. The instrument is widely used in gas transportation, pipeline liquid and closed containers, for measuring the pressure of various liquids, gases, vapors and other media that are non-corrosive, non-explosive, non-crystalline and non-solidifying.
The working principle of the vacuum pressure gauge is to determine the pressure by measuring the bending amount of the spring or diaphragm. When the pressure of the measured gas is applied to the spring or diaphragm, it will cause a small deformation, which is proportional to the applied pressure. The displacement of the spring or diaphragm is connected to a measuring pointer, which displays the pressure value on the dial.
The characteristics of vacuum pressure gauge include stable performance, high measurement accuracy, fast reaction speed, and absolute vacuum gauge, accuracy of 0.5 or more can be used as a standard vacuum in ten. At the same time, the measured results are independent of the type, composition and nature of the gas, and the suction and discharge of the vacuum gauge itself are very small during the measurement process, and will not affect the measured atmosphere.
Vacuum pressure gauges have a wide range of applications in many fields, such as manufacturing, vacuum equipment and scientific research experiments. In the manufacturing industry, the vacuum pressure gauge is used to monitor and control the vacuum state to ensure the accuracy and stability of the production process; In vacuum equipment, it is an important part of vacuum equipment, used to measure the vacuum degree and monitor the operating state of the vacuum system; In scientific experiments, vacuum pressure gauges can provide accurate data required for experiments, helping researchers to conduct in-depth analysis and research.
When using the vacuum pressure gauge, it is necessary to calibrate it first, and pay attention to check whether the components such as the gauge head, air inlet and outlet, and connecting rod are intact. At the same time, the appropriate vacuum value should be selected according to its range and monitored in real time during use. After use, it should be cleaned and maintained in time to extend its service life.
In addition, there are also some precautions when installing and using vacuum pressure gauges. For example, the ambient temperature of the instrument should be -40 to 70 ° C, and the relative humidity should not be greater than 80%. The instrument must be installed vertically and at the same level as the measuring point. Under static pressure, the measurement range should not exceed 3/4 of the upper limit of measurement, and under fluctuation should not exceed 2/3 of the upper limit of measurement. When measuring the vacuum, the vacuum part should be used entirely.
In short, vacuum pressure gauge is an important measuring instrument, in a variety of industrial environments have a wide range of applications. By understanding its working principle, characteristics and use methods, it can better play its role and improve production efficiency and product quality
