Predictive Emission Monitoring System (PEMS)

Advantech Sensor offers affordable compliance monitoring solutions in the form of SmartCEMS® predictive emissions monitoring systems (PEMS). When compared to other continuous emissions monitoring systems (CEMS) in independent field tests conducted by the U.S. EPA, SmartCEMS® products demonstrated greater accuracy and reliability. The SmartCEMS predictive emissions monitoring systems (PEMS) products were designed to provide advanced and superior emissions monitoring capability and are guaranteed to pass certification testing under 40 CFR. SmartCEMS solutions can be operated independent of a CEMS under most regulations promulgated to date.

SmartCEMS® predictive emissions monitoring systems (PEMS) are extremely cost-effective compliance monitoring solutions. SmartCEMS® products have been demonstrated to be accurate and highly reliable.

Predictive Emissions Monitoring Systems (PEMS) features:

  • Lower system capital cost.
  • A PEMS can be configured, delivered, and installedin short period 
    Installing a predictive emissions monitoring system requires the installation of a single computer with the DAS/PEMS software installed and interfaced to the boiler control system. Typically, a one-day installation and start up process.
  • PEMS should require no on-site emergency service.
    A direct modem to the system takes care of 99% of all service requirements.
  • PEMS do not require dual range analyzers.
    CMC PEMS measure the full dynamic range of emissions from a source, including start up to shut down.
  • PEMS do not require EPA protocol calibration gases, piping, wiring, gas regulators or software to operate the auto-calibration sequence.
    CMC PEMS analyzers do have auto calibration just like a CEMS.
  • PEMS require no air source.
  • PEMS have no ongoing preventative maintenance requirements as do CEMS.
    The only related maintenance for a PEMS is a periodic cleaning of the PEMS computer. Normal maintenance and calibration of process instruments that provide data to the PEMS is required. This maintenance should already be ongoing within a plant to maintain maximum efficiency and output; therefore, it is not considered an additional associated cost.
  • PEMS have higher data availability which should normally approach 100%.
    The PEMS does not rely on any one process input to maintain system uptime or accuracy of emissions quality. The PEMS uses numerous inputs for a robust data base. Even with a PEMS failure the data from the DCS inputs for the predictions still reside within the DCS. This data can be retrieved, calculated, and back filled by the PEMS when brought back on line. Therefore, very little if any down time or missing data should ever be reported.
  • PEMS can display emission process and combustion efficiency outputs.
  • PEMS can be used to determine the source of excess emissions.
    Combustion input parameter(s) that are out of normal range can be identified and alarmed for immediate action and provide a trail to the diagnosis of excess emissions.
  • PEMS require no field hardware or additional equipment beyond the plant or process control system.
    In fact, the PEMS in some cases can run on a control system computer and completely eliminate the need for additional hardware.
  • PEMS maintenance and service is minimal.
  • A CMC PEMS provides accuracy that is equal to that of a CEMS.
    PEMS inherently do not drift. PEMS rely on process inputs and instruments that typically drift no more than 0.5 to 1% per year. Typical models utilize 12 or more input parameters that are in some cases redundant. The resulting emissions prediction is resilient to input failure and drift, such that no single input parameter is critical to the accuracy of the stated emission.
  • The PEMS analyzer is not vulnerable to obsolescence. CMC PEMS are continually upgraded for any new regulatory changes or software upgrades through inexpensive ongoing service contracts.
  • PEMS require no on site spare parts or consumable spare parts.

 

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