Concentration ratio calculation method for two-component gas and concentration calculation method for gas to be detected
A calculation method and a technology for detecting objects, which can be applied to the analysis of gas mixtures, the structural details of gas analyzers, and measuring devices, etc., and can solve the problems that the gas concentration of the detection object cannot be calculated with high precision.
Pending Publication Date: 2022-01-11
日写株式会社
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Problems solved by technology
[0006] However, the ethanol concentration detected by the conventional method is a concentration containing two gas components, so there is a problem that the concentration of the gas to be detected cannot be obtained with high accuracy.
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Embodiment Construction
[0043] Hereinafter, an example of an embodiment of the method for calculating the concentration ratio of the two-component gas of the present invention will be described with reference to the drawings.
[0044]The method for calculating the concentration ratio of the two-component gases includes the steps of heating the gas sensor element 1 to a temperature at which the two gas components G1 and G2 introduced into the gas sensor element 1 react, and maintaining the temperature for a predetermined time to measure the gas sensor element 1. The first measurement step S1 of the resistance value of the gas sensor element 1 is heated to a temperature at which only any one of the two gas components G1 and G2 reacts, and the temperature is maintained for a predetermined time to measure the resistance value of the gas sensor element 1 and the second measurement step S2 of the second measurement step; and based on the combination of the resistance value in the first measurement step and ...
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[Problem] To provide a method for obtaining concentration of a gas to be detected with high precision, using two gas sensor elements. Also, to provide a method for obtaining a concentration ratio of a two-component gas, using a single gas sensor element. [Solution] A concentration ratio calculation method comprises: a first measurement step for heating a gas sensor element to a temperature at which both of two gas components introduced to the gas sensor element are reactive, maintaining the temperature for a predetermined amount of time, and measuring an electric resistance value at the gas sensor element; a second measurement step for heating the gas sensor element to a temperature at which only one of the two gas components is reactive, maintaining the temperature for a predetermined amount of time, and measuring an electric resistance value at the gas sensor element; and a concentration ratio calculation step for calculating a concentration ratio of the two gas components on the basis of a combination of the electric resistance value in the first measurement step and the electric resistance value in the second measurement step.
Description
technical field [0001] The present invention relates to a method for calculating a concentration ratio of a two-component gas and a method for calculating a concentration of a gas to be detected. Background technique [0002] A method is known in which a gas to be detected including two gas components and a gas to be detected is introduced into a gas sensor element to calculate the concentration of the gas to be detected (for example, refer to Patent Document 1). In this method, a gas sensor element 100 highly sensitive to ethanol and a reference sensor element 200 having the same characteristics as the gas sensor element except for ethanol sensitivity (refer to Figure 13 ). A gas to be detected including two gas components and ethanol is introduced into the gas sensor element 100 . At the same time, two gas components are introduced into the reference sensor element 200 via the ethanol removal unit 210 . In the gas sensor element 100, the resistance value changed accordi...
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Login to View More IPC IPC(8): G01N27/12G01N33/00
CPCG01N27/12G01N33/005G01N33/004G01N33/0067G01N27/14G01N33/007G01N33/4972
Inventor 泽坂骏介福田真也栗林晴美
Owner 日写株式会社