On-site full-automatic pressure calibrator

Abstract

The invention discloses an on-site full-automatic pressure calibrator. The on-site full-automatic pressure calibrator comprises a shell, a power supply switch, a plurality of interfaces, a display, control components such as a keyboard and the like, a gas pressure generation unit, a power supply unit, a pressure detection unit, and a gas pressure control unit, wherein the gas pressure generation unit is a miniature gas pressure pump which is communicated with atmosphere; a pressure output pipeline is communicated with the gas pressure control unit; the pressure output ends of the pressure control unit are communicated in parallel and are used for accommodating a pressure standard machine in the pressure detection unit and a pressure joint of a meter to be detected; the pressure control unit is in signal connection with the pressure standard machine in the pressure detection unit; and the power supply unit is electrically connected with the gas pressure generation unit, the pressure control unit and the pressure standard machine in the pressure detection unit respectively. The on-site full-automatic pressure calibrator does not need external gas cylinders or alternating current (AC) power supplies, can automatically generate gas pressure and accurate standard pressure, has light self weight and small volume, is convenient to carry on site, and can automatically calibrate various on-site pressure meters.

Description

technical field [0001] The invention belongs to the field of measurement and calibration of pressure instruments and meters, and mainly relates to automatic calibration in this field, in particular to an automatic calibration device which is easy to carry to the field for calibrating pressure instruments. Background technique [0002] The pressure gauges used in industrial production, pressure measurement and other fields must be checked or calibrated on-site after a period of use to determine whether the pressure gauge is accurate. [0003] The usual pressure calibration instrument is to generate gas pressure by manual pressurization in a closed pressure calibration pipeline, and read the indicated value of the pressure gauge through observation, and adjust the gas pressure by manual pressurization. The role of its adjustment is to provide a certain accurate gas pressure at the pressure output port, and use it as a standard pressure to connect to the calibrated pressure ins...

AI Technical Summary

Problems solved by technology

[0006] However, due to the large size of the pressure controller itself, the use of AC power supply, the large volume of the external gas cylinder, and the limitation of the location of the chemical gas in the gas cylinder, the pressure controller cannot be carried

For a large number of pressure instruments used on site, there is a disadvantage that calibration cannot be performed on site

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