Patent ID: 6849174
Filing Date: 2005-02-01
Classification: G01N

Abstract:
1. A gas concentration measuring apparatus comprising: a gas concentration sensor having a sensor element and an electrical connector for connection to a remote digital signal processor, said sensor element including a pump cell and a sensor cell, the pump cell being made of a solid electrolyte body and a first and a second pump cell electrode, the first and second pump cell electrodes being responsive to application of voltage to disassociate and pump oxygen molecules contained in exhaust gasses of an automotive engine to which said gas concentration sensor is exposed out of said gas concentration sensor, said sensor cell being made of a solid electrolyte body and a first and a second sensor cell electrode, the first and second sensor cell electrodes being responsive to application of voltage to disassociate at least one of NO a microcomputer disposed within said connector performing functions of a gas concentration determining and heater control, the gas concentration determining being functionally connected to the first and second sensor cell electrodes to process and analyze the current signal provided by said gas concentration sensor to output data as a function of the concentration of the at least one of NO