Portable pressure calibrator

Abstract

The invention relates to a portable pressure calibrator which comprises a pressure gauge box, a pressure indicating gauge arranged on the pressure gauge box, a precise pressure gauge in the pressure gauge box, and a high pressure tank arranged at the lower end of the precise pressure gauge, wherein an air inlet check valve is arranged on one side of the high pressure tank; a pressure guiding pipeis arranged on an air inlet pipe and is connected with the pressure indicating gauge; an air source outgoing interface is arranged on an air exhaust pipe on the other side of the high pressure tank; an outgoing valuator is arranged on the air exhaust pipe; and an air exhaust valuator is arranged on a communicating pipe A. The portable pressure calibrator has the advantages that the structure is simple, the carrying is convenient, the operation is flexible, the time wasted on dismounting a transmitter is decreased, and errors caused by bumping and collision during the transportation are reduced; the calibration accuracy of the calibrator can be guaranteed while the calibration efficiency is improved; and in the whole calibration process, any electric pressurized equipment is not needed, and no energy consumption and loss are caused, so by using the portable pressure calibrator, the carbon output is low, the environment is protected, the energy is saved and the efficiency is high.

Description

technical field [0001] The invention relates to a portable pressure calibrator. Background technique [0002] In the calibration of measuring instruments, the calibration of differential pressure transmitters and pressure transmitters is mostly disassembled from the testing site, and then transported back after the testing is completed by using procedures such as laboratory air pump pressurization, standard table comparison, and error calibration. Use on-site installation, power connection, flushing, and exhaust to start. This operation is cumbersome, takes a long time to verify, and is inefficient. Bumping and vibration during transportation and installation will easily cause mechanical errors and affect accuracy; at the same time, frequent power-on and power-off will easily affect other equipment. The normal operation of the system cannot meet the needs of fast and efficient production. Contents of the invention [0003] The technical problem to be solved by the presen...

AI Technical Summary

Problems solved by technology

[0002] In the calibration of measuring instruments, the calibration of differential pressure transmitters and pressure transmitters is mostly disassembled from the testing site, and then transported back after the testing is completed using procedures such as laboratory air pump pressurization, standard table comparison, and error calibration. Use on-site installation, power connection, flushing, and exhaust to start. This operation is cumbersome, takes a long time to verify, and is inefficient. Bump and vibration during transportation and installation will easily cause mechanical errors and affect accuracy; at the same time, frequent power-on and power-off will easily affect other equipment. The normal operation of the system cannot meet the needs of fast and efficient production

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