Patent ID: 11885763
Assignee: ROHM CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 5:
6. The gas concentration measurement system according to claim 1, wherein
the limiting current-type gas sensor includes a plurality of first limiting current-type gas sensor elements and a plurality of second limiting current-type gas sensor elements, wherein each of the plurality of first limiting current-type gas sensor elements and the plurality of second limiting current-type gas sensor elements is a duplicate of the limiting current-type gas sensor element,
the current detector includes a plurality of first current detecting elements corresponding to respective ones of the plurality of first limiting current-type gas sensor elements and a plurality of second current detecting elements corresponding to respective ones of the plurality of second limiting current-type gas sensor elements,
the plurality of first current detecting elements is configured to acquire a first plurality of limiting current values of the plurality of first limiting current-type gas sensor elements when the first voltage is applied to the plurality of first limiting current-type gas sensor elements,
the plurality of second current detecting elements is configured to acquire a second plurality of limiting current values of the plurality of second limiting current-type gas sensor elements when the second voltage is applied to the plurality of second limiting current-type gas sensor elements, and
the circuitry is further configured to determine the difference between an average value of the second plurality of limiting current values and an average value of the first plurality of limiting current values.