We have decades of experience building high-quality
CEM Systems to customer’s unique specifications.

ESC Spectrum designs and tailors CEM Systems to meet the toughest monitoring challenges.

We’re dedicated to constructing CEMS in compliance with the Environmental Protection Agency and state and local regulations. Our extensive knowledge covers every aspect, from the intricate details of the process to the monitoring and ancillary hardware, control systems, and reporting software requirements.


What sets us apart is our mastery of various CEM Systems, including dilution, extractive, in-situ, and hybrid systems. We’re not just meeting regulations; we’re exceeding them, consistently delivering systems that go above and beyond expectations.


We consider your permit, process, and space requirements to provide a unique system that is within budget, tested, and proven.

New CEMS Shelters

Experts in Process Control CEM Systems

ESC Spectrum can solve challenges specifically related to designing a Process Control Monitoring System. Our expertise lies in creating systems that seamlessly adapt to monitoring locations situated upstream of control devices, even in the most complex gas streams with stratified and heavy particulate loads.


Our designs incorporate PLC interfaces that seamlessly integrate real-time monitoring data. This ensures that you always have a complete and accurate picture of your operations.

ESC Spectrum Process Control CEMS

Custom-built, state-of-the-art mobile testing CEM Systems

Mobile testing systems operated by stack testers and process optimization teams can present design challenges. To tackle these challenges effectively, it’s crucial to partner with a skilled system integrator whose employees are actively involved in testing activities.


Our approach involves the meticulous craftsmanship of each mobile system, offering a wide array of options tailored to your specific needs. We provide flexibility in power, lighting, HVAC, shelving, storage, weight requirements, flooring, and testing analyzer configuration.


Our commitment to quality shines through in the use of high-grade components, ensuring extended durability and minimal maintenance for your mobile testing trailer. We’ve also optimized the trailer layout for effortless usability, enabling technicians to carry out their tasks with maximum efficiency. Trust us to deliver top-tier CEM systems that excel in mobile testing.

ESC Spectrum CEMS Mobile

Full suite of CEMS services to support your systems

ESC Spectrum offers total CEMS solutions from a single source. We are a turnkey provider for shelters, parts, repair, maintenance, and more – everything you need to keep your CEM system healthy and in compliance.

Our full suite of CEMS services includes:

ESC Spectrum CEMS Training

Visit the CEMS Photo Gallery

Check out some of the high-quality CEMS work our ESC Spectrum team regularly performs.

Michael is always very professional and knowledgeable.
I am always confident things will be resolved quickly with him.

Dave Patterson

Consulting Engineer (Air Quality Group), Ameren

ESC Spectrum has provided excellent engineering and procurement support.

Juan Cantu

Analyzer Specialist, ENglobal

Alex was very helpful in resolving the issues that I brought to him.

Kevin Bugay

Process Engineer, Cardinal Corporation

Even though we are only data logger users, the support staff has always been extremely nice,
very timely and completely knowledgeable on the topic at hand.

John Markely

Sr. Environmental Engineer, Kyger Creek

Very helpful, understood my issue and found the fix I needed.

Dane Ruberg

Instrument Technician, Xcel Energy

Scott is fantastic, very knowledgeable and very helpful!
Always know I am going to get the help I need when he answers the phone.

Celena Arreola

Environmental Engineer, El Paso Electric

Outstanding customer service!!!

Rick Gregory

IT Specialist/Network Admin, Calumet Specialty Partners

The customer service provided was quick and the agent sent additional information.

Ann Woods

Environmental Scientist, Agua Fria Generating Station

Excellent work!

Daniel Fefer

Contractor, Exelon

Case Studies

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