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Continuous Emissions Monitoring System (CEMS) for Determination of a Gas - Monitoring and Testing
Continuous emission monitoring system (CEMS) is the total equipment necessary for the determination of a gas or particulate matter concentration or emission rate using pollutant analyzer measurements and a conversion equation, graph, or computer program to produce results in units of the applicable emission and transmit the information to the Continuous Emission Monitoring system.
System Controller
The system controller is a Siemens S7 1200 PLC with Modbus TCP. It is used to control the day to day operation of the CEMS. It controls the daily automatic validation sequence and probe blow back sequence, and monitors the overall status of the system. The system controller is the primary interface for the system user.
Probe and filter assembly
The standard probe is 3’ long 316 SS suitable for up to 1000° C maximum. The filter assembly is a 270S heated filter assembly (general purpose), 4” 150# RF flange 316SS NEMA 4X fiberglass enclosure.
Data Acquisition System (DAS)Optional
The DAS is suitable for 40 CFR 60 and includes: 1 PC, local rack mount, industrial type, EMC station manager software for communications with a Siemens S7 1200 PLC.
CEM System Main Parts The standard of a sample probe, filter, sample line (umbilical), gas conditioning system, calibration gas system, and a series of gas analyzers which reflect the parameters being monitored.
Typical monitored emissions include: SO2/NOX/CO/CO2/HCL/HF/ dust/flue gas flow rate/pressure/temperature.
