On-site full-automatic pressure and electric signal calibrator
An electrical signal, fully automatic technology, used in the measurement of fluid pressure, instruments, machines/engines, etc., can solve the problem of no pressure calibration and electrical signal calibration integration, to reduce its own weight and volume, improve accuracy, and reduce weight and volume effects
Active Publication Date: 2013-04-10
BEIJING CONST INSTR TECH INC
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Problems solved by technology
Among the existing fully automated pressure calibration technologies, there is no technology that can integrate pressure calibration and electrical signal calibration
Method used
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Embodiment Construction
[0032] see figure 1 , figure 2 and image 3 , the on-site automatic pressure calibrator provided by the present invention includes a housing 9, a gas pressure generating unit 1, a pressure control unit 2, an electrical signal detection unit 5, a power supply unit 3 and a pressure The detection unit 4, the display screen 91 placed on the top of the housing 9, the keyboard 92, the conveniently used and properly distributed electrical signal output holes 93, the power switch 94 and the RS232 interface 95, etc. Wherein, the gas pressure generating unit 1 is provided with a gas path input port (intake port) 96 connected to the atmosphere, its output port is connected to the pressure control unit 2, and the gas path output port 29 of the pressure control unit 2 is connected to the pressure detection unit 4 ( figure 2 The thick line in the middle represents the connection of the gas path); the pressure control unit 2 is also connected with the gas pressure generating unit 1, the ...
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The invention discloses an on-site full-automatic pressure and electric signal calibrator. The on-site full-automatic pressure and electric signal 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, a gas pressure control unit and an electric signal detection 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 pressure standard machine 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; the electric signal detection unit is in signal connection with the pressure control unit and the meter to be detected in the pressure detection unit; and a battery can supply power to the power supply unit. The on-site full-automatic pressure and electric signal calibrator does not need external gas cylinders or alternating current (AC) power supplies, can automatically generate gas pressure and accurate standard pressure, can perform double detection and calibration of pressure and electric signals, 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 that is easy to carry to the site and performs pressure and output electrical signal calibration on 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 pr...
Claims
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IPC IPC(8): G01L27/00F04B1/02
Inventor 姜维利
Owner BEIJING CONST INSTR TECH INC