DEVELOPMENT OF CALIBRATION METHODOLOGY FOR GAS ANALYSERS TO DETERMINE THE CONTENT OF COMPONENTS IN GAS MEDIA
Journal: HERALD OF TECHNOLOGICAL UNIVERSITY
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazan National Research Technological University
2.
KNITU
3.
KNITU
Type:
Article
Pages:
from 69
to 73
Status:
Language:
Russian
Keywords:
CALIBRATION OF GAS ANALYZERS, GAS MEDIA COMPONENTS, CALIBRATION ALGORITHM, MEASUREMENT UNCERTAINTY, VALIDATION, VERIFICATION
Abstract:
The article presents the results of the development of a universal calibration technique for measuring the content of components in gaseous media. The technique can be applied both for the simplest non-automatic gas analyzers (manual) and for automatic ones with their own software, and also allows the user to adjust the device parameters to certain environmental conditions. An algorithm for calibrating gas analyzers has been compiled, and the process of evaluating measurement results has been described. The proposed technique has been tested on ANCAT-7664 Micro gas analyzers of various models designed for continuous automatic measurements of the volume fraction of oxygen, carbon dioxide and monoxide, propane, methane, hydrogen sulfide, nitrogen dioxide, sulfur dioxide, chlorine, hydrogen chloride, ammonia and pre-explosive concentrations of flammable gases and vapors, their mixtures in the air of the working area. Experimental data on calibration of this type of analysers are obtained and the standard uncertainty of measurements for type A is calculated. The initial data for estimation of the standard uncertainty for type B are selected and the expanded uncertainty of measurements is calculated. Validation of the developed method was carried out by the method of interlaboratory comparative tests. Two instruments in different measurement ranges were selected for validation: a multichannel gas analyser DAG-510 and a gas analyser OXYBABY M+i O2. The results of interlaboratory comparisons and compliance with verification criteria such as regulatory support, measurement range, calibration tools, personnel qualification and safety requirements confirmed the applicability of the developed methodology.
The article presents the results of the development of a universal calibration technique for measuring the content of components in gaseous media. The technique can be applied both for the simplest non-automatic gas analyzers (manual) and for automatic ones with their own software, and also allows the user to adjust the device parameters to certain environmental conditions. An algorithm for calibrating gas analyzers has been compiled, and the process of evaluating measurement results has been described. The proposed technique has been tested on ANCAT-7664 Micro gas analyzers of various models designed for continuous automatic measurements of the volume fraction of oxygen, carbon dioxide and monoxide, propane, methane, hydrogen sulfide, nitrogen dioxide, sulfur dioxide, chlorine, hydrogen chloride, ammonia and pre-explosive concentrations of flammable gases and vapors, their mixtures in the air of the working area. Experimental data on calibration of this type of analysers are obtained and the standard uncertainty of measurements for type A is calculated. The initial data for estimation of the standard uncertainty for type B are selected and the expanded uncertainty of measurements is calculated. Validation of the developed method was carried out by the method of interlaboratory comparative tests. Two instruments in different measurement ranges were selected for validation: a multichannel gas analyser DAG-510 and a gas analyser OXYBABY M+i O2. The results of interlaboratory comparisons and compliance with verification criteria such as regulatory support, measurement range, calibration tools, personnel qualification and safety requirements confirmed the applicability of the developed methodology.
Keywords:
CALIBRATION OF GAS ANALYZERS, GAS MEDIA COMPONENTS, CALIBRATION ALGORITHM, MEASUREMENT UNCERTAINTY, VALIDATION, VERIFICATION
CALIBRATION OF GAS ANALYZERS, GAS MEDIA COMPONENTS, CALIBRATION ALGORITHM, MEASUREMENT UNCERTAINTY, VALIDATION, VERIFICATION
