A kind of vacuum pressure indicating value calibration equipment and using method

Abstract

The invention discloses a device for calibrating the indicated value of vacuum pressure and a method for using it. meter, the bottom of the equipment shell is provided with a base, the base is provided with a foot switch, the foot switch is connected to a calibration regulating valve, the oil-free vacuum pump is connected to the detection port through a pipeline, the calibration regulating valve and the calibration table are set on the pipeline, and the calibration The regulating valve is connected with a regulating shaft, and a fixed gear is arranged on the regulating shaft, and a locking device for locking and calibrating the regulating valve is provided in the equipment housing. The gauge and the indicated value of the pressure to be calibrated only need to stare at the indicated value of the pressure gauge to be calibrated, which simplifies the verification steps, and at the same time can realize the locking of the calibration regulating valve, and strengthen the reliability of the fixed state of the calibration regulating valve.

Description

technical field [0001] The invention relates to the field of pressure gauge verification, in particular to a vacuum pressure indication value verification device and a use method. Background technique [0002] A pressure vacuum gauge is a pressure measuring instrument that can measure both positive pressure gas and vacuum. It is based on atmospheric pressure and is used to measure the pressure and negative pressure (vacuum pressure) of neutral gases and liquids in machines, equipment or containers. Spend). After the pressure vacuum gauge has been used for a certain period of time, due to the influence of external factors and continuous pressure, there will be errors in its indication accuracy. It is necessary to use a calibrator to calibrate the pressure vacuum gauge regularly, including the pressure gauge that has just been produced. Calibrate the accuracy of pressure indication to ensure the safe operation of mechanical equipment and operating systems in subsequent use. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a vacuum pressure indication value calibration device and its use method, which can solve the problem that the existing vacuum pressure indication value calibration equipment needs to stare at the detection table and the pressure indication value to be calibrated at the same time when performing calibration, which is difficult for the work. inconvenience caused by personnel

At the same time, some calibration equipment is equipped with a pressure regulating valve, but the pressure regulating valve does not have a good locking structure, resulting in frequent accidental touches during use, resulting in changes in pressure, which requires re-adjustment of the equipment, which affects the use of the equipment. caused great inconvenience

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