Improving the method of compensation of output signal temperature drift in optical methane concentration measurer

Oleksandr V. Vovna; Anatolii A. Zori; Ivan S. Laktionov; Ramin N. Akhmedov; Samat Sundetov; Damian Harasim

doi:10.1117/12.2501613

1 October 2018 Improving the method of compensation of output signal temperature drift in optical methane concentration measurer

Oleksandr V. Vovna, Anatolii A. Zori, Ivan S. Laktionov, Ramin N. Akhmedov, Samat Sundetov, Damian Harasim

Author Affiliations +

Proceedings Volume 10808, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018; 1080868 (2018) https://doi.org/10.1117/12.2501613
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018, 2018, Wilga, Poland

Abstract

The method of compensation of output signal temperature drift in an optical methane concentration measurer has been improved, which allowed to expand the operating temperature range to +55°C preserving regulated metrological characteristics. In the proposed method, in contrast to the existing ones, compensation is made for the temperature-caused change of the constant component of the output signal not by the static polynomial, but by the functional dependency of LED optical radiation intensity change on voltage drop change in it. The improved method of compensation in the measurer using hardware and software components has been implemented, which made it possible to evaluate metrological characteristics of the measurer and its efficiency. During the experimental research of the methane concentration measurer in question, it has been obtained the value of the additional absolute measurement error of methane concentration, which does not exceed the regulated magnitude of the basic error (±0.20^vol%), which fully meets the requirements for these measurers under conditions of coal mine atmosphere.

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Oleksandr V. Vovna, Anatolii A. Zori, Ivan S. Laktionov, Ramin N. Akhmedov, Samat Sundetov, and Damian Harasim "Improving the method of compensation of output signal temperature drift in optical methane concentration measurer", Proc. SPIE 10808, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018, 1080868 (1 October 2018); https://doi.org/10.1117/12.2501613

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KEYWORDS

Methane

Light emitting diodes

Optical testing

Mining

Electronics engineering

Metrology

Power supplies

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