Dust and Air Quality MonitoringDust and Air Quality MonitoringNoise Sentinel is a strong choice for managing noise impact in industries such as construction and mining. In these industries and in others, the management of dust and air quality is also an issue that can significantly impact the surrounding community.

Adding dust and air quality monitoring to Noise Sentinel is straightforward, employing the same techniques of alerting, exceedance management and compliance reporting within the same system. Monitoring is cost-effective and easy, as a single system manages all elements: noise, dust and air quality. The learning curve is shortened, and Noise Sentinel retains a complete set of all environmental compliance data.

Noise Sentinel provides a flexible solution that is compatible with a wide variety of instrumentation and measurement techniques. This makes the same system suitable for use in applications within different countries, as it meets a variety of regulatory requirements and national approvals.

This Product Data addresses Dust and Air Quality Monitoring. The full capabilities of Noise Sentinel are covered in the Noise Sentinel Product Data .

Features and Benefits


  • Combine dust and air quality compliance monitoring with noise compliance monitoring
  • Continuous unattended operation
  • Real-time display
  • Automatic alerting on exceedance so that immediate action can be taken to reduce impact
  • Automatic notification via email or text message (SMS)


  • Cost-effective management of environmental impact
  • One system monitors noise, dust and air quality, making it easier to learn and simpler to use
  • Determine when to take mitigating action, improving your efficiency and compliance
  • Maximise your operations whilst being comfortable that you are within agreed operating limits
  • Show your compliance management to stakeholders
  • Understand how weather conditions can affect the impact of your activities

Why you need to manage dust and air quality

Dust can be a significant issue at construction sites, refuse sites, mines and quarries. Excessive dust can create health problems and can cause environmental degradation, including air and water pollution. It causes visibility problems and can damage or discolour nearby property. As well as impacting local communities, it can affect your workforce and create unsafe working conditions. Many countries have guidelines and laws requiring operators to control dust emissions, observe maximum level limits and take mitigating action should excessive dust be identified. This covers a range of measures, including barriers, traffic control, watering sprays, compacting soil and stabilisation.


Weather conditions can have a significant impact on dust concentrations, reducing dust when it is wet and increasing it in high wind. Monitoring dust levels continuously enables you to see when conditions require you to take mitigating action, optimising your activity and reducing costs. Tracking dust levels upwind and downwind of your site will help you determine if it is your actions that are creating the dust, or something unrelated that cannot be controlled.

Health and Safety

The term ‘air quality control’ covers a range of pollutants, depending on the facility being monitored. A key issue at large mines and industrial sites are high concentrations of nitrous oxides, volatile organic compounds, sulphur dioxide, hydrocarbons and other pollutants which can be a threat to the health of your workforce and nearby communities. Many countries have national ambient air quality standards to adhere to, and continuous monitoring is necessary to ensure that levels are not breached.

Display of Dust and Air Quality Metrics

Noise Sentinel lets the user manage dust and air quality data in a similar way to noise. In the Real-time Control application, dust and air quality measurement locations are marked with a square icon. Current levels can be seen in the blue boxes to the left in Fig. 1, and also by passing the mouse over the monitoring location. Any warning or violation level exceedances are shown to the right. Fig. 1 An example of the Real-time Control application screen Noise Sentinel supports a range of dust metrics, including PM10, PM2.5 and Total Suspended Particles (TSP). Depending on the instrumentation chosen, simultaneous measurements are possible. Air quality measurements can include nitrous oxide, sulphur dioxide, carbon monoxide, ozone, total hydrocarbons, and others on request.

Recent measurement history of the recorded levels over several hours is available. This enables the operator to see trends and determine if there is an air quality issue to be addressed, or to instigate dust mitigation actions such as damping down. Measurements are taken regularly, from 1 minute to several hour intervals, depending on the instrumentation used. Weather conditions including wind speed, wind direction, temperature, pressure humidity and rainfall are shown at the top of the screen (see Fig. 2).


Dust and air quality levels are continuously monitored against specified criteria. This is usually a fixed concentration level, although Noise Sentinel may be configured with different thresholds for different times of day and working practices, including specific days of the week. Should levels exceed a stated criterion, an alert is generated and shown in the Real-time Control application. Alerts may trigger an email to be sent to a defined distribution list, or a text message to specified mobile phones. Alerts are generated within a few seconds of exceedance, enabling prompt action to be taken. Set warning levels below limit levels to create alerts to prevent a breach taking place. The alert dialog shows the details of the location, time, level recorded and the compliance limit.


Dust and air quality alerts, summary reports, noise and other data captured by Noise Sentinel are seamlessly integrated with Microsoft® Excel®. By using the simple report setup wizard, the user can define a report to be produced regularly and automatically emailed to a distribution list. Users can choose from a wide range of dust and air quality metrics and have Noise Sentinel present the data broken down by location and time of day. Reports are available within Noise Sentinel and displayed in chart or tabular form. Data may be charted and exported to other applications for compilation and more detailed analysis/presentation.

Instrumentation and Technology

Noise Sentinel works with an industry standard data logger with a wide range of interfaces to established dust and air quality monitoring sensors. The choice of instruments provides the greatest flexibility for Noise Sentinel to measure the specific pollutants of interest with the required national approvals for each measurement technique. The ability to mix instrumentation provides users with the opportunity to optimise cost. For example, the operator can choose to use a single highly accurate Beta Attenuation Monitor to measure dust to national standards, and lower cost light scattering instruments to indicate dust levels over a wider area. If a user already possesses compatible instrumentation, it may be possible to integrate these and bring everything together in Noise Sentinel. The design of dust and air quality monitoring systems depends greatly on location and environment, as well as legislative requirements. Air quality and environmental experts are often required to help specify solutions. We will work with your experts or use our own appointed experts to devise a cost-effective monitoring approach that meets the project’s constraints. A list of compatible instrumentation is listed at the end of this product data. Please contact your Brüel & Kjær representative for further details. 

Specifications – Noise Sentinel Dust & Air Quality Management 

DUST METRICS • Particulates less than 1 micron (PM1) • Particulates less than 2.5 microns (PM2.5) • Particulates less than 10 microns (PM10) • Total Suspended Particles (TSP) Other metrics may be available on request AIR QUALITY METRICS • Nitrous Oxide (NO) • Nitrogen Dioxide (NO2) • Oxides of Nitrogen (NOx) • Carbon Monoxide (CO) • Sulphur Dioxide (SO2) • Ozone (O3) • Benzene • Toluene • Xylene (BTX) Other metrics may be available on request DATA LOGGER Type: airQlog by recordum® Dimensions and Weight: Fits in 19″ rack mount • Height: 45 cm (17.71″) • Width: 9 cm (3.54″) • Depth: 20 cm (7.87″) • Weight: 6.5 kg (14.33 lb) Power Supply: 100 – 240 V (50 – 60 Hz) Connection to other data loggers is available on request. COMPATIBLE INSTRUMENT SUPPLIERS Noise Sentinel works with a variety of dust and air quality monitoring instrumentation. • Teledyne® API • Chromatotec® • Derenda • HORIBA® • LI-COR® • Met One • ML • Palas® • R&P • Thermo Scientific® • TSI® • Turnkey® • Verewa® Other equipment may be supported on request

Ordering Information 

Noise Sentinel may be ordered by contacting your local Brüel & Kjaer representative. Further details are available at www.bksv.com/noisesentinel 

Download the Product Data Sheet

We help our customers measure and manage the quality of sound and vibration in their products and in the environment
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