A gas analyser calibrating device and calibrating method

A technology of gas analyzers and analyzers, applied in measuring devices, analysis materials, instruments, etc., can solve the problems of wasting manpower, time, and reducing the service life of instruments

Inactive Publication Date: 2005-09-28
INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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Problems solved by technology

Doing so not only wastes a lot of manpower and ti...

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  • A gas analyser calibrating device and calibrating method
  • A gas analyser calibrating device and calibrating method
  • A gas analyser calibrating device and calibrating method

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Embodiment Construction

[0022] In order to understand the technical solution of the present invention more clearly, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] Please combine figure 1 . Still take the environmental monitoring instrument produced by the American Thermo Electron Company mentioned above as an example. The analyzers are sulfur dioxide, nitrogen oxides, carbon monoxide and carbon dioxide analyzers. Among the analyzers, the sulfur dioxide analyzer can directly give the concentration of sulfur dioxide in the atmosphere in real time; the nitrogen oxide analyzer can directly give the concentration of nitrogen monoxide, nitrogen dioxide and nitrogen oxides in the atmosphere in real time; the carbon monoxide analyzer It can directly give the concentration of carbon monoxide in the atmosphere in real time; the carbon dioxide analyzer can directly give the concentration of carbon dioxide in the atmosphere in real time. Concent...

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Abstract

The gas analyzer calibrating equipment includes zero gas generator, calibration system and various kinds of gas analyzers. One gas inlet of the calibration system has one total gas intake pipe connected and the total gas intake pipe is connected to several standard gas cylinders via solenoid valve; and the gas outlet of the calibration system has one total gas outlet pipe connected and the total gas outlet pipe has the other end connected to analyzer via one three-way solenoid valve, which has normally closed port connected to the total gas outlet pipe, the normally opened port connected to atmosphere, and common port connected to the air intake port of the analyzer. The computer controls these solenoid valves via D/A converter. The equipment may be used to obtain the output slope of the analyzer data for correcting the data the analyzer obtains and obtaining the practical value of the gas component in atmosphere, solving the drift problem of analyzer.

Description

technical field [0001] The invention relates to an environment monitoring instrument, in particular to a device and a calibration method for calibrating a gas analyzer. Background technique [0002] Environmental monitoring instruments can give various components and contents in the atmosphere in real time, as a basis for people to control air pollution. At present, there are many models of this type of monitoring instrument, and its working principle is basically composed of a calibration system, a zero gas generator and several gas analyzers. Among them, the calibration system is to give a standard pollutant concentration, which is used to calibrate different gas analyzers; the function of the zero gas generator is to produce pure air without any impurities, and use this gas to test several gas analyzers. Zero point, that is, when the pure air is sent to the gas analyzer, the data obtained by the instrument should be zero, even if this is not zero, this number should be u...

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Application Information

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IPC IPC(8): G01N33/00
Inventor 胡非石立庆
Owner INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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