continuous emission monitoring system
(7) The term “continuous emission monitoring system” (CEMS) means the equipment as required by section 7651k of this title , used to sample, analyze, measure, and provide on a continuous basis a permanent record of emissions and flow (expressed in pounds per million British thermal units (lbs/mmBtu), pounds per hour (lbs/hr) or such other form as the Administrator may prescribe by regulations under section 7651k of this title ).