Dust monitors

DSL-240

Single pass dust monitor for monitoring dust emissions using ddp

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DSL-340

Double pass dust monitor for monitoring dust emissions using ddp

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Real-time measurements of the concentration of dust & particulate matter in industrial process emissions

While all environmental dust can be harmful, dust emissions from industrial processes have the potential to significantly impact people’s health. The degree of exposure danger is based not only on the duration and level of exposure, but also on the size, type and chemical composition of the particles involved – especially for workers at industrial sites and nearby communities.

Your trusted partner for CEMS dust monitoring compliance & more

As part of our dedicated continuous emission monitoring (CEMS) portfolio, Acoem designs, manufactures, installs and maintains a range of continuous emission dust monitoring equipment that uses the innovative Dynamic Detection Principle (DDP) to measure dust and particulate within exhaust gases from manufacturing and combustion processes.

Real-time measurements of dust and particulate levels using Acoem dust monitors provide accurate, reliable and actionable data to help ensure that your business mitigates risk by:

complying with government regulations
minimising emission exceedances
protecting your workforce & surrounding populations
Limiting your impact on the environment.

In addition to regulatory compliance, our dust monitors can also provide you with greater insight into your plant performance, help calculate an emissions inventory and assist you when compiling an environmental impact assessment.

How does the Dynamic Detection Principle (DDP) work?

DDP, or optical scintillation as it sometimes referred to, measures the dynamic fluctuation in light transmission as dust particles move through a light beam. This dynamic fluctuation derives from temporal distributions of the dust particles which attenuate the light beam. The more dust present in the exhaust, the greater the amplitude of these fluctuations.

Our DDP dust monitors calculate the dynamic response, or the ratio of light variation to light intensity, which for particular applications, is proportional to dust concentration and when calibrated against standard reference measurements, this can be presented as a reading in mg/m³.

Unlike the standard transmission technique, DDP has immunity to gradual reductions in the absolute intensity of the light signal. Therefore, DDP instruments have the advantage that they are significantly less susceptible to drift with time, temperature or dirtying optics, than traditional opacity monitors and less sensitive to misalignment. In practice, this means that the instruments require less maintenance.

Benefits of Acoem Dynamic Detection Principle (DDP) dust monitoring

Immune to gradual reductions in the absolute intensity of the light signal
Less susceptible to drift with time, temperature or dirtying optics
Reduces sensitivity to misalignment
Dust monitors require less maintenance

Is DDP the right dust monitoring solution for my application?

To determine whether DDP dust monitors are suited to your application, rather than more traditional opacity monitors, you need to consider the following factors:

What is the typical size distribution of the particulates to be measured?
Do they have constant or variable physical properties?
How easily can the monitoring heads be accessed for routine cleaning of optical surfaces?

Our dust monitoring range

We offer two dust monitors that use the DDP technique:

The DSL-230 MK III Single Pass Particulate Monitor optical instrument designed to measure the concentration of dust or particulate matter in an exhaust gas passing through a duct, stack or flue.
The DSL-330 MK III Double Pass Particulate Monitor optical instrument designed to measure the concentration of dust or particulate matter in an exhaust gas passing through a duct, stack or flue.