ZHENG Yi-ting1, WANG Xiao-dan2. Selecting method of infrared CO2 gas sensor in petroleum mud-logging[J]. 2013, 32(6): 73-76. DOI: 10.13873/j.1000-97872013.06.003.
Two detecting systems based on thermopile and pyroelectric sensors are set up and tested at 10
30
50 ℃ separately.Experimental result is that relative errors of average value are-10.50 % - 11.50 % and 28.00 % - 34.50 % and the relative standard deviations are 0.13 % - 6.89 % and 0.04 % - 5.21 % respectively.The experiment of the thermopile sensor system is poorer than pyroelectric sensor
but temperature drift is small.Through considering the characteristics of sensors and large temperature variations at mud-logging site
it is proposed that the thermopile sensor is more suitable for CO2 detection than the pyroelectric sensor.