... Ltd which has a patent number of 200920173411.5. As an ancillary equipmentor the calibration of monitoring ... which caneffectively remove water, O3,NO,NO2,CO,HC, methane and non-methane gases. Working principle ... -15°C goes through the patented CO, HC reaction chamber, then passes special three kinds of ... of CO and HC remover±5°CSet value ±5°C11Temperature rising time of CO and HC remover180°Cequal to ...