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On-demand gas regulator for gas analyzer calibration

A gas analyzer and gas conditioning technology, applied in standard gas analyzers, instruments, analytical materials, etc., can solve problems such as air emissions and destroy calibration results, and achieve the effect of eliminating the need, facilitating assembly, and facilitating calibration

Active Publication Date: 2012-05-16
MAQUET CRITICAL CARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If an empty calibration gas bottle 200 is mistakenly used in the subsequent calibration process, a small amount of air leaking into the gas bottle 200 will be exhausted and spoil the calibration result

Method used

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  • On-demand gas regulator for gas analyzer calibration
  • On-demand gas regulator for gas analyzer calibration
  • On-demand gas regulator for gas analyzer calibration

Examples

Experimental program
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Effect test

Embodiment Construction

[0037] image 3 Exemplary fields of application of gas analyzers which can advantageously be calibrated using the gas regulating device according to the invention are shown.

[0038] exist image 3 In , a ventilator 50 is shown for mechanically providing oxygen to a patient 60 to which the ventilator is connected. The bypass gas analyzer 70 is arranged in gas connection with the Y-piece 80 of the ventilator via a side connection 90 . A sidestream gas analyzer includes a flow generating device (not shown), such as a pump, for generating a flow of gas to be analyzed from the Y-piece through the side connection to the gas analyzer. The gas analyzer 70 may include a display unit for displaying the results of the gas analysis to the operator, or it may be electrically connected to an intensive care monitoring system or the like, which in turn may be adapted to display to the operator the results from the gas analyzer 70 received information. Bypass gas analyzer 70 may be configur...

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PUM

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Abstract

The present invention relates to agas regulating device (2A-E) for use in calibration of a gas analyzer (4). The gas regulating device comprises an inlet (8A) and an outlet (8B), a valve arrangement comprising at least one valve (11; 11A, 11B), and valve regulating means for regulating the at least one valve. The gas regulating device is intended to be connected between a calibration gas supply (3) and a gas analyzer (4) that is to be calibrated and the valve regulating means is configured to regulate the at least one valve such that gas is allowed to flow through a gas flow path (5B) between the inlet and outlet only when a gas pressure (P1)in the gas flow path, between the at least one valve and the outlet, falls below a predetermined threshold value. The gas regulating device is advantageously used when calibrating side-stream gas analyzers in which case it reduces calibration gas consumption, prevents discharge of calibration gas into the ambient environment and prevents leakages jeopardizing correct calibration.

Description

technical field [0001] The invention relates to a gas regulating device for the calibration of a gas analyzer, a calibration device for the calibration of a gas analyzer, a method for calibrating a gas analyzer and the use of a gas regulating device for the calibration of a gas analyzer. Background technique [0002] Gas analyzers are well known in the art and are commonly used in various respiratory assistance devices, such as ventilators and anesthesia machines, to analyze the composition of the breathing gas supplied to the patient and / or the composition of the gas exhaled by the patient. [0003] There are mainly two types of gas analyzers used for this purpose: in-line gas analyzers and side-stream gas analyzers. [0004] On-line gas analyzers (also sometimes referred to as mainstream gas analyzers) are typically located in the gas flow path of the breathing aid by connecting the gas analyzer in-line with the gas conducting tubing of the breathing aid. Thus, the online...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N33/497
CPCG01N33/0006G05D7/0635Y10T137/7796
Inventor 帕尔·埃姆特尔米卡埃尔·科克
Owner MAQUET CRITICAL CARE
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