Due to compliance regulations, it is not adequate to simply know the concentration of pollutants in the stack gas emissions. A facility is required to monitor and report the mass emissions (e.g. lb/hr, kgs/day, etc.) of their processes.
The 909 is specifically configured for monitoring stack emissions on a mass rate basis. It measures stack effluent temperature and velocity in addition to pollutant concentration at stack conditions, enabling mass emission rates to be reported. With the addition of an optional zirconium oxide sensor, the 909 is capable of monitoring oxygen.
The 909 is a very robust and reliable analyzer. Its no-moving-parts, UV-based measurements do not suffer from H2O and CO2 interference. This greatly simplifies sample handling and sample integrity as there is no need for sample drying. As a fully extractive, heated wet basis analyzer, the 909s sample system components are simply heated above the dew point of the sample gas. This results in a simpler and more accurate calculation of gas concentrations, requiring no corrections for condensed and dissolved components.
The 909 performs all necessary sample gas and calibration gas flow management, and probe and sample line temperature control. The Model 909 is a full function Continuous Emissions Monitoring System (CEM) which requires the addition of only a sample probe and sample line to be fully operational. Housing options for the analyzer include a cabinet or walk in shelter built to your specifications.