According to the principle of pressure instrumentation table can be divided into several?

Because of the different testing purposes, requirements and conditions, people design a variety of pressure instrument to meet the need. According to the principle of the role of the instruments can be divided into the following kinds: 1, the liquid type type pressure gauge is based on the principles of hydrostatics, to balance the production of liquid column height force and method of the unknown force measuring instrument for pressure. Measured the liquid column height difference can direct interpretation, display or by calculating method to determine. 2, elastic elastic pressure gauge principle is to use elastic sensitive element ( Such as spring tube) Has the elastic deformation under the action of the pressure, the deformation and the size of the effect of pressure into a certain linear relationship, through the drive mechanism ( Movement) Use Pointers or other display device expressed measured pressure measuring instrument. 3, piston, piston pressure gauge of hydrostatic equilibrium principle and action principle is the use of PASCAL's principle, have a role in effective area of piston known special farmar for pressure measuring instrument. 4, the working principle of electrical measuring electric test pressure gauge is: through certain transformation components, turn pressure into power to measure pressure of the pressure gauge. 5, digital pressure gauge can be directly to digital pressure unit with digital display, or this shows a standard value, according to the relationship of the pressure to determine the pressure gauge of the value. Hope the above principle of different pressure instrument can be used in the work process of help to you!