MULTI-RANGE ON-SITE FULL-AUTOMATIC PRESSURE CALIBRATION INSTRUMENT

摘要

Provided is a multi-range field full-automatic pressure and electric signal calibrating instrument, comprising: control components such as a shell, a power switch, multiple-interfaces, a display, a keyboard, and a gas pressure generating unit, a power supply unit, a pressure detecting unit, a gas pressure control unit and an electric signal detecting unit; the pressure output end of the pressure control unit is in parallel connection with pressure joints which are used for installing multiple pressure standard meters and detected meters with different ranges; the pressure control unit is in signal connection with the pressure standard meters; the electric signal detecting unit is in signal connection with the pressure control unit and the detected meters; the power supply unit can supply power by batteries. The calibrating instrument does not need to be externally connected with a gas cylinder and an alternating current power supply and can automatically generate a gas pressure and generate an accurate standard pressure; the design of the multi-range pressure standard meter can be suitable for various detected meters; the double detection and calibration for pressure and electric signals can be implemented; the weight and volume of the instrument are small; and the multi-range field full-automatic pressure and electric signal calibrating instrument is convenient to carry in the field and can carry out automatic calibration on various field pressure instruments.

主权项

1. A multi-range on-site full-automatic pressure calibration instrument, comprising: a housing; a power switch, a plurality of interfaces, a display and a keyboard incorporated at proper positions in the housing; and a gas pressure generation unit, a power supply unit, a pressure detection unit and a gas pressure control unit incorporated in the housing, wherein the gas pressure generation unit is a gas pressurizing pump communicated with atmosphere, a pressure output pipe thereof being communicated with the gas pressure control unit; a pressure output port of the pressure control unit is communicated in parallel with two pressure connectors, one for installation of a gauge to be calibrated in the pressure detection unit and the other for installation of a pressure standard device in the pressure detection unit, the pressure standard device being a manually replaceable standard gauge of a different range or a plurality of switchable pressure modules of different ranges; the pressure control unit is in signal connection with the pressure standard device in the pressure detection unit, and the power supply unit is in electrical connection with the gas pressure generation unit, the pressure control unit, and the pressure standard device in the pressure detection unit, respectively.