Keywords
concentration
methane
temperature
compensation оптичний вимірювач
концентрація
метан
температура
компенсація
How to Cite
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 + 35ºС, in (64 ÷ 142) times exceeds the regulated main error, which makes ±0,2 vol.%. A hardware-software method of the output signal temperature 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.
References
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