Oxygen inhalator calibrating apparatus

An inhaler and calibrator technology, which is applied in the field of oxygen inhaler calibrator, can solve the problems of low verification work quality, low verification accuracy, and high work intensity, and achieves light weight, fast and accurate measurement, and reduced work intensity. Effect

Inactive Publication Date: 2014-01-15
长春市计量检定测试技术研究院
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  • Abstract
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Problems solved by technology

[0023] The invention provides an oxygen inhaler calibration instrument to solve the problems of low calibration

Method used

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Experimental program
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Embodiment Construction

[0043] The gas input end of the flow sensor 2 is threadedly connected to the gas output end of the gas transmission quick-connect conduit 1, and the output end of the flow sensor 2 is threadedly connected to the gas input end of the three-way connection block 3, and the flow sensor 2 passes through the A / D conversion module A serial port communication lead is connected with the flow data acquisition module of the 32-bit single-chip microcomputer 7;

[0044] The threaded connection end of the low-pressure pressure sensor 5 is threadedly connected with one end of the tee connection block 3; the low-pressure pressure sensor 5 is connected with the low-pressure pressure data acquisition module of the 32-bit single-chip microcomputer 7 through the serial port communication wire of the A / D conversion module two;

[0045] The input end of the high-pressure pressure sensor 9 is used to be threadedly connected with the output end of the high-pressure gas source; the high-pressure pressu...

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Abstract

The invention relates to oxygen inhalator calibrating apparatus. A gas input end of a flow sensor is in thread connection with a gas output end of a gas transmission quick connecting guiding pipe. A central processor of a 32-bit single chip microcomputer is connected with a flow data collecting module, a low-pressure data collecting module, a high-pressure data collecting module. The central processor of the 32-bit single chip microcomputer is connected with an LCD touch display screen electric cable. An output end of a lithium battery pack is connected with an input end of a power supply managing circuit of the 32-bit single chip microcomputer. The oxygen inhalator calibrating apparatus has the advantages that quick accurate measuring is achieved, the technical requirements of the national verification regulation are met, the oxygen inhalator calibrating apparatus is portable and light, working intensity is lowered, and working efficiency is improved.

Description

technical field [0001] The invention belongs to a tester for an oxygen inhaler. Background technique [0002] The oxygen inhaler calibrator is based on the principle of gas dynamics, connects the oxygen inhaler flowmeter to be tested in series with the standard flow sensor, and the measured value of the standard flow sensor is converted into a standard value through single-chip data processing and then displayed on the LCD screen. The flow indication value of the tested instrument is compared and calculated to determine the error value of the gas flow delivered by the tested instrument; the standard pressure sensor is connected in parallel with the standard flow sensor, and the standard pressure sensor is used to measure the pressure value of the gas delivered by the tested instrument in real time to determine the error value of the gas delivered by the tested instrument. Check whether the pressure value of the instrument meets the technical requirements of JJG 913-1996 "Ver...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01L27/00G01F25/00
Inventor 赵宏义杨国防刘庆文
Owner 长春市计量检定测试技术研究院
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