HYDROGEN SULFIDE GAS DETECTOR WITH HUMIDITY AND TEMPERATURE COMPENSATION

摘要

A hydrogen sulfide gas detector (10) is provided. The detector (10) includes a metal oxide semiconductor-based hydrogen sulfide gas sensor (30) having an electrical characteristic that varies with hydrogen sulfide gas concentration. Measurement circuitry (28) is coupled to the metal oxide semiconductor-based hydrogen sulfide gas sensor (30) to measure the electrical characteristic. A controller (22) is coupled to the measurement circuitry (28) and is configured to receive an indication of the electrical characteristic of the hydrogen sulfide gas sensor (30) as well as an indication of ambient humidity. The controller (22) is configured to provide a compensated hydrogen sulfide gas concentration output based on the indication of the electrical characteristic of the hydrogen sulfide gas sensor (30), an indication of ambient temperature, and the indication of ambient humidity.