CEMS

CEMS – Continuous Emission Monitoring System


Introduction to CEMS

Continuous Emission Monitoring System (CEMS)

In today’s increasingly regulated industrial environment, real-time transparency in emission control is not just a requirement — it is a responsibility. CEMS (Continuous Emission Monitoring System) is an advanced technological solution designed to measure and record gas emissions from industrial stacks and chimneys on a continuous basis.

What is CEMS?

CEMS is a complete system that continuously monitors key pollutants emitted from industrial processes. It provides accurate, real-time data on emission levels to ensure compliance with national and international environmental regulations.

Key Parameters Monitored:

  • NOx (Nitrogen Oxides)
  • SO2 (Sulfur Dioxide)
  • CO (Carbon Monoxide)
  • CO2 (Carbon Dioxide)
  • O2 (Oxygen)
  • Dust / Particulate Matter (PM)
  • HCl, HF, NH3, and other specific gases (upon request)
  • Flow rate, Temperature, and Pressure

Main Components of CEMS:

  • Gas Sampling Probe & Conditioning System
  • Gas Analyzers (NDIR, Chemiluminescence, UV Fluorescence, etc.)
  • Opacity / Dust Monitor
  • Data Acquisition and Processing System (DAS)
  • Remote Monitoring & Reporting Platform

Benefits of CEMS:

  • Ensures full compliance with environmental standards (QCVN, EPA, EU directives, etc.)
  • Real-time emission data for immediate process optimization
  • Reduces risk of environmental penalties and shutdowns
  • Supports sustainable development and green manufacturing
  • Provides historical data for reporting and analysis

Wili offers reliable, high-accuracy CEMS solutions tailored for power plants, cement factories, chemical plants, steel mills, and waste incinerators. Our systems are designed for long-term stability, low maintenance, and easy integration with existing plant control systems (SCADA/DCS).


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