Multi-range 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; the pressure output ends of the pressure control unit are communicated in parallel and are used for accommodating a pressurestandard machine with multiple ranges and a pressure joint of a meter to be detected; the pressure control unit is connected with the pressure standard machine in the pressure detection unit through signals; and a battery can supply power to the power supply unit. 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, is suitable for various meters to be detected, 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 that is easy to carry to the site, calibrates pressure instruments and can switch standard ranges. 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 th...

AI Technical Summary

Problems solved by technology

In any case, the range is single, which limits the pressure measurement and control range of the instrument. For some measurement ranges, unless another pressure controller corresponding to the range is used, the measurement accuracy is affected by the range, resulting in When calibrating pressure instruments, multiple pressure controllers with various ranges are required, which brings inconvenience to on-site testing

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