Test & measurement
ABB also offers ongoing support, with services such as Remote Assistance, complete with dynamic QR Codes to give users total control of the information they share when trouble shooting. Support extends throughout the life of the systems, thanks to Measurement Care service agreements. This in turn minimises the total cost of ownership for CEMS systems over their working life. ABB’s digital CEM systems are certification- ready, should third-party verification be needed. They are also modular and readily scalable so they can grow and evolve easily alongside the operator’s business.
5. WHAT ARE PEMS AND WHEN SHOULD COMPANIES CONSIDER THEM? Predictive Emission Monitoring Systems (PEMS) consist of a software suite installed in a dedicated computer, which uses empirical, calculated, and statistical data to predict the emission of certain gases from a specific industrial process, rather than relying on real-time measurements. Deploying this kind of system has the clear
Instrumentation Monthly August 2025
advantage that no new on-site analyzers are needed – at least in theory. This significantly reduces the operating and maintenance cost. Alternatively, in cases where PEMS are used in conjunction with CEMS, the availability of the complete emission monitoring solution can be maximised to provide almost 100 per cent uptime. The main disadvantage of PEMS is that they are only suitable where a stable and consistent source of fuel is used – natural gas, for example. This makes PEMS unsuitable for applications such as waste incinerators and cement plants, where the variability of the material entering the process leads to unpredictable variability in the emissions. In addition, the calculation model must be established using empirical observations and sometimes years of statistical data, which implies a long-term effort upfront by the plant owner before PEMS can be deployed. Some emission directives and regulations also allow PEMS to be used only in conjunction with analyzer-based CEMS. ABB offers both CEMS and PEMS in any combination tailored to meet the needs of each process.
6. WHAT IS NEXT FOR DIGITAL EMISSIONS MONITORING? We expect emissions regulations to get tighter in future and that will drive the development of even smarter compliance tools, with digital technologies playing a vital role in the Environmental, Social, and Governance (ESG) strategies of more and more companies. Industry is also in the grip of a wider wave of automation, and this will result in CEMS becoming more closely integrated within broader automation schemes.
In terms of the technologies underpinning CEMS, the widespread adoption of cloud platforms and mobile app-style interfaces will make them easier than ever to deploy and operate, while machine learning and artificial intelligence will make it possible to use the resulting data in ways we have not even thought of yet.
ABB
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