Module for controlling a gas sampling system, uses metal oxide gas sensors operated at controlled temperature by a Wheatstone bridge circuit, with a processor unit for signal analysis with reference to a target quantity

摘要

A module with a processor unit for the run-off control of a gas sampling system by electrical output/input switching in combination with an electronic driver circuit for chemical gas sensors, in which one or more metal oxide (MO) gas sensors are operated at controlled temperature by a Wheatstone bridge circuit and the signal is analysed in a processor unit with reference to a target quantity.