DOI: https://doi.org/10.15407/techned2017.04.086

HARDWARE AND SOFTWARE METHOD OF THE OUTPUT SIGNAL TEMPERATURE DRIFT COMPENSATING OF THE METHANE CONCENTRATION OPTICAL METER

Authors
O.V. Vovna,*, A.A. Zori, I.S. Laktionov
Donetsk National Technical University,
Shybankova Square, 2, Pokrovsk, Donetsk region, 85300, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
*ORCID ID : http://orcid.org/0000-0003-4433-7097

Abstract

Processes in the developed optical methane concentration measurer are probed. It is determined that the additional error in measuring the methane concentration due to a change in temperature from + 5 to + 35°C, in (64 ÷ 142) times exceeds the regulated main error, which makes +/- 0,2 ^vol.%. A hardware-software method of the output signal tempera-ture drift compensating of the methane concentration meter has been developed and implemented. The LED of the measuring channel is used as a thermosensitive element in the measuring instrument, voltage drop on it is used as an information signal. Implementation of the proposed hardware-software method allowed to achieve the additional error magnitude of the methane concentration measuring from the temperature change, which doesn't exceed the basic one. References 10, figures 3.

Key words: optical measuring instrument, concentration, methane, temperature, compensation.

Received:    20.12.2016
Accepted:    16.05.2017
Published:   15.06.2017

References

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