GAS SENSOR
To provide a gas sensor element capable of making both high-precision concentration measurement in an environment with high concentration of a specific gas in a measurement target gas and high-precision concentration measurement in an environment with low concentration of the specific gas.SOLUTION:...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a gas sensor element capable of making both high-precision concentration measurement in an environment with high concentration of a specific gas in a measurement target gas and high-precision concentration measurement in an environment with low concentration of the specific gas.SOLUTION: A gas sensor according to an aspect of the present invention is configured to determine whether concentration of a given gas component in a measurement target gas is higher or lower than a predetermined concentration and, when determined to be lower, set a given temperature a sensor element reaches when heated by a heater to be lower than that when determined to be higher.SELECTED DRAWING: Figure 1
【課題】被測定ガスにおける特定ガスの濃度が高い環境下での高精度な濃度測定と、濃度が低い環境下での高精度な濃度測定とを両立可能なガスセンサ素子を提供する。【解決手段】本発明の一側面に係るガスセンサは、被測定ガス中の所定のガス成分の濃度が所定の濃度に比べて高いか低いかを判定し、低いと判定すると、高いと判定する場合よりも、ヒータ部によって加熱されることでセンサ素子が至る所定の温度を低く設定する。【選択図】図１ |
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