Sensor control device for use in nitrogen oxide detection device, has output point potential correction section correcting output point reference potential corresponding to fluctuation of potential of reference potential connector

摘要

The device (50) has an output potential setting section setting a potential of an output potential connector to a starting point reference potential such that a reference voltage is applied to a sensor unit regarding a potential of a reference potential connector. The reference connector is set to a reference point reference potential. A starting point potential correction section (56) corrects an output point reference potential corresponding to a fluctuation of the potential of the reference connector, so that the voltage applied to the unit remains equal to the reference applying voltage. An independent claim is also included for a gas sensor and a sensor control device for applying a voltage to a sensor unit of the gas sensor.