P3.5 - Non-contact Measuring the Surface Temperature of Chemical Sensors

Pellistor and semiconductor sensors are used for measuring the concentrations of combustible or toxic gases and organic volatile vapours. The functional properties of these chemical sensors depend on their working temperature to a large extent. The working temperatures of sensors are usually within the temperature range of 200 – 600 °C. The knowledge of both the sensor active layer temperature and the temperature dependence of the sensor output signal is very important for the optimum...