CEMS Analyzers: What They Are and How to Maintain Them

As your facility's continuous emissions monitoring systems age, it's vital to keep up with CEMS analyzers to avoid the potential risks of downtime and fading reliability.
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Man working on CEMS Analyzer

What is a CEMS Analyzer?

Continuous Emissions Monitoring Systems (CEMS) consist of a series of gas analyzers for various air pollutants being monitored. Analyzers are integral to your CEMS as they measure gases including NOx, SO2, CO, CO2, O2, THC, NH3, and more. CEMS Analyzers can apply to two different processes including Straight-Extractive CEMS and Dilution CEMS. CEMS Analyzers also use different technologies for different gasses such as Chemiluminescence, Pulsed Fluorescence, NDIR (Non-dispersive Infrared Sensor), FTIR (Fourier-transform Infrared Spectroscopy), FID (Flame Ionization Detector), and Zirconium Oxide. Through a long history of experience, certain analyzers are suited best for specific gases. For example, Pulsed Fluorescence offers the best sensitivity for low range Sulfur Dioxide (SO2) measurement while Chemiluminescence is best for low range Nitric oxide (NOx) measurement.

Manufacturing Practices for CEMS Analyzers

Analyzers last around 15 years or more and their lifespan is dictated by the manufacturer’s ability to continue support for them. Often, the decrease in the availability of parts ceases the manufacturers’ ability to support while some manufacturers continuously make upgrades to their analyzers and will discontinue support after the new CEMS analyzers come to market. This could potentially be as short as seven years. Other CEMS manufacturers will continue to support analyzers as long as possible.

CEMS Analyzer Maintenance

As your facility’s continuous emissions monitoring systems age, it’s vital to keep up with CEMS analyzers to avoid the potential risk of downtime and avoid its fading reliability. This is especially true for analyzers that are no longer receiving support from manufacturers. Preventative Maintenance is recommended quarterly with analyzers while other PM tasks are done annually. It’s important to keep up with their lifecycle to maintain air emissions monitoring requirements. Read more about determining where your facility’s analyzer’s lifecycle is at.

ESC Spectrum’s Analyzer Resources

At ESC Spectrum, we can help you determine when it’s time for a repair to your CEMS analyzer or a replacement for a new one. We also offer other analyzer services including calibration and upgrades.

We operate multiple full depot-level labs with the ability to repair and refurbish most major CEMS analyzers. We offer loaner and rental analyzers during repair to help your facility stay in compliance with air emissions monitoring regulations.

Eventually the cost of repairs and potential risk of downtown becomes too great, demanding the purchase of replacement analyzers. We can help pick out the analyzer that best fits your application.

We perform Elemental Mercury Calibrator certifications in accordance with the Interim EPA Traceability Protocol as well as Neutral Density Filter certifications as required by the EPA’s Part 60 regulations.

Our Calibrator Certification Service compares and tests the Thermo Hg 81i Mercury Calibrator against a NIST traceable vendor prime. Our lab is the only facility beside the manufacturer certified to repair and calibrate these devices.

ESC Spectrum also offers our CEMS Protect Program which provides services you need to protect your equipment, including analyzers, and stay in compliance. We work with technicians to complete all required quarterly maintenance and activities and provide on-the-job training and support.

 

Book your CEMS Analyzer Consultation today to learn how we can best help you.

 

Woman repairing CEMS analyzer
Two men training on analyzers for CEMS

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