Automatic pressure gauge

Abstract

The invention discloses an automatic pressure gauge. The automatic pressure gauge comprises a base, a display instrument, an object-under-test connection seat, an instrument transmission connection seat, a load bearing device and a pressure adjustment assembly; the display instrument is connected with the instrument transmission connection seat through an electric connection wire harness; the pressure adjustment assembly comprises a total adjustment valve, a first adjustment rod, a position adjustment valve, a second adjustment rod, a piston adjustment valve and a third adjustment rod; and the second adjustment rod passes through the position adjustment valve so as to be connected with the object-under-test connection seat and the instrument transmission connection seat; two ends of the first adjustment rod are connected with the instrument transmission connection seat and the piston adjustment valve respectively; two ends of the third adjustment rod are connected with the piston adjustment valve and the load bearing device respectively; and the total adjustment valve is in linkage with the middle of the first adjustment rod. The automatic pressure gauge has the advantages of reasonable design structure and convenient operation; and the accuracy of the automatic pressure gauge in a detection process can be well maintained through adjustment, and therefore, the accuracy of pressure quantity values can be better ensured.

Description

technical field [0001] The invention relates to the technical field of pressure testing, in particular to an automatic pressure gauge. Background technique [0002] The pressure gauge is a standard pressure measurement instrument with high accuracy, high reproducibility and high reliability. The working mechanism of the pressure gauge is based on the definition of pressure concept, and based on Pascal's law and the principle of hydrostatic balance. The pressure generated by loading the special weight of known mass on the piston of known effective area to give an accurate pressure value. Piston pressure gauges are often used as national benchmarks and working benchmarks or pressure measurement standards in the world. Therefore, Piston pressure gauges have a wide range of applications in their fields. [0003] Existing piston pressure gauges usually include a base, a display instrument, a socket for the measured object, an instrument transmission socket, and a load-bearing ...

AI Technical Summary

Problems solved by technology

[0003] Existing piston pressure gauges usually include a base, a display instrument, a test object socket, an instrument transmission socket, and a load-bearing device. The instrument transmission socket is connected to the display instrument, and the measured object socket and the load-bearing device are connected to the instrument transmission The pressure value can be measured by connecting the measured object to the measured object socket. However, after a long period of use of the pressure gauge, the measured object socket, the instrument transmission socket and the load-bearing device on the base After the position is slightly moved, it is easy to affect the detection accuracy, and often affects the accuracy of the final measured pressure value

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