The shock-resistant pressure gauge is composed of a guiding system (including joints, spring tubes, flow-limiting screws, etc.), gear transmission mechanism, indicator (pointer and dial), and casing (including case, cover, glass surface, etc.). The shell is a sealed structure, filled with a damping fluid (usually silicone oil or glycerin), which can resist the vibration of the working environment and reduce the pulsation of the medium pressure.Pressure gauge flange of instrument
The shock-resistant pressure gauge has relatively good environmental adaptability and can be installed between minus 40 degrees and minus 70 degrees. As long as it does not exceed its normal operating temperature, the pressure gauge will have no error. Generally speaking, the pressure gauge needs to be installed vertically, that is, to be kept in the same horizontal plane as the measuring point. At the same time, after the installation is complete, the explosion-proof opening at the back of its case should be blocked.
As some on-site environments are quite special, the seismic pressure meter also has its own uses and can play its role well. It has strong earthquake resistance, so it can meet special measurement requirements in special environments. At present, the sales volume of shock-resistant gauges is relatively large in the market, and users have a greater demand for this type of pressure gauge.
Normal working condition of shockproof pressure gauge:
Operating temperature: -5~55℃, -25℃~55℃.
≤85% relative temperature
The vibration frequency in the operating environment is not more than 25 times, and the amplitude is not more than 1 mm.
The pressure manifestations of seismic pressure gauges mainly include:
The entire pressure of the pressurized medium acting on the surface area of the container is called pressure, which is represented by the symbol pi. An instrument that measures pressure is called a pressure gauge.
Air pressure, the pressure formed by the weight of the air column on the earth's surface, is called atmospheric pressure. According to geographic latitude, altitude and weather conditions, its value is calculated with a barometer, represented by the symbol pd.
Under normal circumstances, the pressure gauge is in the atmosphere, and the measured pressure value is equal to the difference between the atmospheric pressure and the atmospheric pressure, which is called the gauge pressure and is represented by a symbol.
When the pressure is less than atmospheric pressure, the pressure of the vacuum gauge is negative, and its value is called vacuum, which is represented by the symbol pz.
Differential pressure, the pressure difference between two places in the equipment, referred to as the pressure difference. In the production process, differential pressure is sometimes directly used as a process parameter, and differential pressure measurement is also a means of indirect measurement of flow and level.
