EMERSON
Measurement Instrumentation

Continuous Emissions Monitoring Systems (CEMS)​

Ensure regulatory compliance for your industrial processes with Rosemount™ Hot/Wet and Cold/Dry Continuous Emissions Monitoring Systems—fully designed to meet EPA 40 CFR Part 60 and Part 75 requirements​

With Emerson’s CEMS Solutions for Measurement Instrumentation, you can achieve reliable gas analysis to help ensure accurate emissions reporting and operational compliance. Explore how our solutions support both Hot/Dry and Cold/Wet applications for emissions monitoring.​

Specifications

Environmental Specifications
  • General Purpose and Hazardous Area
  • CSA Certification
  • ATEX Certification
  • SIL Certification

Certifications/Approvals 

EPA Part 60, Part 75


Service 

Project Management, Engineering/Design, Procurement, Fabrication, Testing, Startup/Commissioning, Training, Lifecycle Services


Analyzer Technologies
  • Quantum Cascade Laser Spectroscopy (QCL)
  • Tunable Diode Laser Spectroscopy (TDL)
  • Paramagnetic and Electrochemical Oxygen Sensing
  • NDIR/ UV/ VIS Photometer
  • Thermal Conductivity
  • Moisture Sensing
Compliance Data Acquisition System (DAHS)
  • EPA 40 CFR Part 60
  • EPA 40 CFR Part 75

Simplify Emissions Monitoring​

Continuous Emissions Monitoring Systems - QCL Analyzers​

QCL Analyzers​

The Rosemount™ CT5100, CT5400, and CT4400 Series Quantum Cascade Laser (QCL) Gas Analyzers provide precise, reliable measurement of all CEMS parameters in a single device—ranging from ppm to percent levels—using up to six Quantum Cascade and Tunable Diode Lasers, with stability up to 15 years of life.​

Resources

Frequently Asked Questions​

A CEMS, or Continuous Emission Monitoring System, is a system that continuously monitors and records emissions from industrial sources, such as power plants, refineries, and other facilities. It measures pollutants like sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), and carbon dioxide (CO2). CEMS help ensure compliance with environmental regulations and provide data for process optimization.

Typically, the most common emissions that are monitored and reported are nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO) and particulate matter (PM).  However, many other components can be measured and required for reporting compliance.​

Emerson delivers fully integrated Continuous Emissions Monitoring Systems. This includes design, fabrication, and integration of
  • World Class Gas Analyzers Sample Handling Systems which draw and condition a sample from a stack​
  • Data Aquisition & Handling System (DAHS) to act as the brains of a system controlling calibration & validation, blowback, and reporting requirements
  • Custom Engineered Sample Handling Systems which draws and conditions a sample from a process stack

Alongside long-term Lifecycle support, Emerson delivers confidence in compliance-based emissions monitoring.

QCL is among the latest technologies that measure many different compounds in a single analyzer as opposed to an analyzer that is dedicated to only one or two components.  Additionally, the CT series analyzers add the capability of TDL, allowing for components in both the near infrared and mid infrared region of spectra analysis to be captured.  With up to six laser modules per analyzer, the CT series analyzer can measure up to twelve components simultaneously including water vapor content.​