Monitoring & metering
VOCs, and during processing at high temperatures, polymers can degrade into smaller, volatile compounds, which are also VOCs. The manufacture of some food packaging involves the application of a plastic membrane (PET, HDPE, LDPE, PP etc.) to cardboard or paper. This is a good example of a process that releases VOCs which have to be abated. Typically, a Regenerative Thermal Oxidizer (RTO) is used to destroy the VOCs and other industrial pollutants in exhaust gases by oxidizing them into harmless substances like carbon dioxide and water vapour. RTO abatement systems have to be controlled by a gas analyser. For example, a Signal FID can take samples from both ends of the RTO to check abatement performance and demonstrate regulatory performance. This can be achieved with two FIDs or with one FID and a switched sampling system.
MONITORING TECHNOLOGY The standard reference method for the analysis of VOC emissions is by a Flame Ionisation Detector (FID), which for many years has been at the heart of Signal’s VOC analysers. The FID method is specifically designed to detect carbon-hydrogen (C-H) bonds, making it highly selective for VOCs. Signal manufactures two main types of FID – fixed and portable. The fixed analysers are permanently deployed to measure VOC emissions in one location, and the portable analysers can be used at multiple sites, where discontinuous monitoring is permissible. These are generally sites with lower emissions where periodic measurements suffice. In many countries, the monitoring of VOCs for regulatory compliance requires certification to specific performance standards. For example, Signal’s latest FID, the SOLAR CEMNEX, recently passed a rigorous program of tests at TÜV in Germany. As a consequence, this monitor has MCERTS approval verifying that it complies with the performance and uncertainty requirements specified in the UK’s Environment Agency Guidance: MCERTS for stack emissions monitoring equipment at industrial installations - Continuous emissions monitoring systems (CEMS) Updated 28 August 2024, EN 15267-1:2023, EN15267- 2:2023, EN 15267-3:2007 and QAL 1 as defined in EN 14181: 2014.
SUMMARY
It is possible to claim that a product is more sustainable if it has a lower carbon footprint, produces less environmentally harmful emissions, uses less energy and/or water, or if it results in less waste. However, if it only achieves one of these admirable goals, it is important to check that it is not doing so at the expense of the others, and that is why packaging manufacturers are using more VOC analysers.
Signal Group
www.signal-group.com Instrumentation Monthly November 2025
VIBRATION DIAGNOSTICS DIRECTLY IN THE FIELD
I
fm, a global leader in industrial automation, has unveiled its latest innovation, the VSE9xx diagnostic system. Designed to bring advanced vibration diagnostics directly to the field, this state-of-the-art solution redefines how industries monitor and maintain machine health, enabling greater efficiency and minimising costly downtime.
With its robust IP67-rated housing, the VSE9xx is purpose-built for deployment in demanding environments, eliminating the need for control cabinet installations. This allows the system to deliver accurate, real-time evaluations of up to four dynamic signals, such as acceleration, while seamlessly capturing critical additional data like speed and temperature. The result? A more comprehensive view of machine health that empowers businesses to act proactively, maintain operational continuity, and reduce the risk of unexpected failures. Designed with simplicity and versatility in mind, the VSE9xx diagnostic system is compatible with all common acceleration sensors and connects effortlessly using
industry-standard M12 connection cables. This feature ensures an error-free installation process while safeguarding against tough external conditions. It also supports retrofitting, making it an ideal choice for integrating advanced condition monitoring capabilities into existing installations, further saving time, space, and budget. Beyond its technical strengths, the VSE9xx bridges the gap between automation and IT networks with integrated separation, enhancing data security and communication reliability. The system’s ability to provide precise, decentralised diagnostics translates into actionable data for operators and decision-makers, fostering smarter strategies for predictive maintenance and operational efficiency at scale.
ifm’s VSE9xx diagnostic system is more than a product—it is a game-changing tool for industries seeking to optimise performance, reduce maintenance costs, and maintain competitive advantage through innovation.
ifm
www.ifm.com 49
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