YOU Wen-bin, FENG Fei, YU Zheng-yin, et al. Research of temperature controlling module of micro thermal conductivity detector[J]. 2017, 36(2): 11-13+17.
YOU Wen-bin, FENG Fei, YU Zheng-yin, et al. Research of temperature controlling module of micro thermal conductivity detector[J]. 2017, 36(2): 11-13+17. DOI: 10.13873/J.1000-9787(2017)02-0011-03.
The main noise of micro thermal conductivity detector( micro TCD)
the key part of micro gas chromatograph( GC) system
comes from temperature fluctuation and gas flow noise. Main sources of micro TCD noise is theoretically analyzed
effect of temperature fluctuations on the micro TCD noise is simulated with COMSOL
and electric circuit and the algorithm of the heating module is described in details. Test show that temperature fluctuations of micro TCD is about 0. 09 ℃
which reach standard of commercial GC temperature control precision.