Patent ID: 8443648
Filing Date: 2013-05-21
Classification: G01N

Abstract:
1. A continuous emissions monitoring system that is in fluid communication with a flue stack conducting exhaust gas from a combustion source, the continuous emissions monitoring system comprising: an analyzer for measuring concentrations of an analyte present in the exhaust gas; a probe in fluid communication with the flue stack, the probe having an inlet to acquire a sample of exhaust gas from the flue stack, the probe also having an outlet to return the sample to the flue stack, the probe being in fluid communication with the analyzer, and the probe inlet being located upstream of the analyzer, the probe tending to remove analyte from the sample; a calibration checking system in fluid communication with the probe at a location downstream of the probe inlet and upstream of the analyzer, the calibration checking system including: an air cleanup panel fluidly connected to the probe at a first location upstream of the analyzer and at a second location downstream of the analyzer.