| 摘要 |
A method of setting a correction coefficient for correcting an oxygen concentration detected by a gas concentration detection apparatus, the method including the steps of obtaining a current value of current flowing in an oxygen pump cell of a gas sensor by exposing the gas sensor device to each of at least three or more sample gases of different known oxygen concentrations; calculating, after a corrected oxygen concentration is calculated using the current value and a correction value, a correction coefficient approximating a linear relationship between any one corrected oxygen concentration serving as a reference and two other corrected oxygen concentrations. Also disclosed is a gas concentration detection apparatus including a gas sensor device, a calculation means and a memory means for storing the correction coefficient obtained in accordance with the method.
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