Data Acquisition Systems
Why choose ESC Spectrum for your plant’s Data Acquisition System (DAS) needs? We provide end-to-end solutions that include products and services custom-built for every part of the air emissions compliance and monitoring process. Our expertise is based on decades of experience helping customers in a variety of industries, including Power Generation, Petrochem, Refining, Glass, and more, comply with federal, state, and local air quality regulations. Our Data Acquisition Systems are in constant development and supported by in-house professional DAS services and a 24/7 customer support team.
Find out why thousands of facilities across the U.S. trust ESC Spectrum with their air emissions monitoring and reporting. Contact us to see our Data Acquisition Systems in action today.
Data Acquisition Systems
What is a Data Acquisition System?
A Data Acquisition System (DAS) – also known as a Data Acquisition and Handling System (DAHS) – is a set of tools for continuously collecting and validating your emissions data for air compliance reporting. It is a critical component of your facility’s Continuous Emissions Monitoring System (CEMS). Watch our video for an explanation of how both DAS hardware and software work together to collect and validate air emissions monitoring data continuously.
ESC Spectrum provides three different Data Acquisition System choices – StackVision, Prism, and CEMDAS. All work with the robust 8864 Data Controller, which provides reliable data collection, computation, and storage.
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
From The Source Blog

Understanding the Data Assessment Report (DAR) for CEMS Audits
The Data Assessment Report (DAR) is a crucial but often overlooked component of CEMS audit compliance. This guide breaks down what needs to be included, from quarterly accuracy results to EPA audit sample requirements, helping you keep up with regulations and streamline your reporting process.

Tail Gas Treatment Units (TGTUs): Essential for Sulfur Recovery
Read this post to discover how Tail Gas Treatment Units (TGTUs) help refineries meet stringent sulfur recovery and emissions control standards. This blog covers essential TGTU technologies, regulatory requirements, and the vital role that TGTUs play to improve sulfur recovery efficiency.

PM CEMS and PS-11 Compliance Explained: Best Practices for Reliable Particulate Matter Monitoring
Read this post for a deeper understanding of the certification requirements for PM CEMS, with a special emphasis on the PS-11 Correlation.