Pressure unit of pressure-resistant pressure gauge and pressure detection method - News - Global IC Trade Starts Here Free Products
The definition of a stainless steel pressure gauge is defined in engineering as a force acting perpendicularly on a unit area, and a unit force acting on a unit area is a pressure unit. In the International System of Units, the pressure of 1 Newton force is uniformly applied to the area of ​​1 square meter and the pressure is 1 Pascal. China has Pascal as the legal unit. The pressure performance of the seismic pressure gauge mainly includes: 1. Absolute pressure. The total pressure exerted on the surface area of ​​the container by the side medium is called pressure, and is represented by the symbol pi. The meter used to measure absolute pressure is called an absolute pressure gauge. 2. Atmospheric pressure, the pressure formed by the weight of the air column on the Earth's surface, called atmospheric pressure. It varies with geographic latitude, altitude, and meteorological conditions, and its value is measured using a barometer, indicated by the symbol pd. 3, gauge pressure, usually the pressure gauge is in the atmosphere, then the measured pressure value is equal to the difference between absolute pressure and atmospheric pressure, called gauge pressure, denoted by the symbol pb. 4. Vacuum degree, when the absolute pressure is less than atmospheric pressure, the gauge pressure is negative, and its absolute value is called vacuum degree, which is represented by the symbol pz. 5, differential pressure, the difference between the two pressures in the equipment is simply referred to as differential pressure. In the production process, differential pressure is sometimes used directly as a process parameter, and differential pressure measurement can also be an indirect means of flow and level measurement. Pressure is one of the important parameters in the industrial production process. Many process productions can only be carried out under certain pressure conditions in order to achieve the desired results. Monitoring of pressure is also a guarantee of safe production. The detection and control of pressure is an important part of ensuring the economic and safety of industrial production processes.
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