Study on Thermal Conductivity Methane Sensor Constant Temperature Detection Method
Abstract: The thermal
conductivity methane sensor can detect methane concentration that measures the
thermal conductivity coefficient of the measured methane different from the
background gas. This sensor has advantages of detection of a variety of gases,
large measuring range, stability, long working life, but also has defects, such
as poor detection accuracy, sensitivity affected by ambient temperature and
sensor temperature, the defect limits a wide applications of the sensor. This
paper analyzes the theory of thermal conductivity methane sensor and method of
measurement, proposes thermal conductivity methane sensor constant temperature
detection method, and experimentally validates the feasibility of ambient
temperature compensation. Experimental results show that the method effectively
reduces the effect of ambient temperature on measuring accuracy.
Author: Ding Xibo, Guo
Xiaoyan, Chen Yuechao, Sun Xue, Li Zhaoxia
Journal Code: jptkomputergg130103
