Patent ID: 9395261
Filing Date: 2016-07-19
CPC Classification: F04B,G01L,G05D

Claim Text:
1. A multi-range on-site full-automatic pressure and electric signal calibration instrument, comprising: a housing; operation and control components including a power switch, a plurality of interfaces, a display and a keyboard incorporated at positions in the housing; a gas pressure generation unit incorporated in the housing; a power supply unit incorporated in the housing; a pressure detection unit incorporated in the housing; a gas pressure control unit incorporated in the housing; and an electric signal detection 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 series with two parallel pressure connectors of the pressure control unit, one of the pressure connectors for installation of a gauge to be calibrated in the pressure detection unit and the other of the pressure connectors for installation of a pressure standard device in the pressure detection unit, the pressure standard device being a manually replaceable standard gauge from among a plurality of equipped standard gauges having different measurement ranges or being a plurality of switchable pressure modules having different measurement ranges; the pressure control unit is in signal connection with the pressure standard device in the pressure detection unit; the electric signal detection unit is in signal connection with the pressure control unit and the gauge to be calibrated in the pressure detection unit; and the power supply unit is in electrical connection with the gas pressure generation unit, the pressure control unit, the pressure detection unit and the electric signal detection unit, respectively.