Stack emission monitoring is a process that enables facility managers, inspectors, and other key personnel to measure the level of industrial waste and/or pollutants a stack emits into the atmosphere. Monitoring emissions from stack facilities air quality monitoring and measures the efficacy of pollution control equipment. The data gathered may also be used to prove regulatory compliance and benchmark performance.

What is a Stack?

Stacks are essentially large industrial chimneys designed to emit and disperse hot air, particulate matter, and pollutants into the atmosphere at such a height that they do not constitute a danger to surrounding life on the ground. There are several types of stacks in use today, such as:

  • Boiler stacks
  • Flue gas stacks
  • DG set stacks
  • Furnace stacks
  • Chimneys

Why Choose Continuous Stack Emission Monitoring?

Continuous stack emission monitoring enables plant managers and other key executives to see current emission levels in real-time, 24 hours a day, 7 days a week. This is an important capability for power plants and other facilities, since strict air quality standards regulate the allowed concentration of emitted pollutants such as SOx, NOx, and many other particles and gases. If these amounts are exceeded, the offending company may be subject to fines.

While many facilities use periodic stack emission monitoring systems, a continuously operative framework will help ensure that emission levels remain within acceptable parameters. If for any reason the emission levels rise past a certain threshold, continuous monitoring will help managers to quickly remedy the situation.

How Does Stack Emission Monitoring Equipment Work?

At MAC Instruments, our MAC 155 Moisture Analyzer’s humidity probe and humidity transmitter measure humidity in exhaust gases that are heated up to 1,200° F (650° C). With the addition of special accessories, the temperature range of the humidity probe can be extended up to 2400° F (1300° C).

The MAC 155 system measures the percentage of moisture by volume using a high-temperature capacitive sensor that reacts under pressure from water vapor in the presence of other gases. Moreover, the analyzer makes two-point, in-situ calibration and system checks possible on a daily basis and facilitates adherence to EPA regulations and local emission statutes. This moisture analysis system has a proven track record of providing continuous, accurate emission measurements, as demonstrated in this case study.

Continuous Stack Emission Monitoring From MAC Instruments

There are many compelling reasons for an organization to invest in continuous stack emission monitoring equipment. The real-time data collected by these cutting-edge monitoring systems enables facility managers to keep emissions well within acceptable parameters.

At MAC Instruments, we take great care in designing, manufacturing, and delivering the highest quality stack emission monitoring systems on the market, such as our MAC 155 Moisture Analyzer. For more information about this system or any of our other products, please request a quote to speak with one of our experts.

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