• Robust, defensible TSP dust monitoring even in humid, foggy conditions
  • Continuous real-time measurement of total suspended particulate 
  • Purpose-built monitoring hardware for short or long-term outdoor use
  • Lockable weatherproof enclosure light enough to be carried by one person
  • Get set up and reporting data in under two minutes
  • Integrate other environmental sensors e.g. wind, noise, weather, solar radiation
  • Flexible communications platform that transfers real-time data wirelessly
  • Access all your data in one place – anywhere, anytime – via browser on phone, tablet and PC
  • Set email / SMS alerts to respond to dust events before there’s a problem
  • Huge on-board data storage capacity for long-term, fail-safe monitoring
  • Robust weather-proof lockable enclosure with integrated solar shielding
  • MCERTS certified for PM10 by the UK Environment Agency


  • Construction and Remediation sites
  • Industrial perimeter/fenceline monitoring
  • Brownfield developments
  • Waste management and Landfill sites
  • Port and bulk handling terminals
  • EIA and Greenfield baseline studies
  • Roadside monitoring

The Dust Sentry TSP Dust Monitor is for:

Industrial operators who need a cost-effective and robust solution to show particulate levels generated by site activities are within regulatory or permitted limits:

  • Construction and remediation
  • Quarry and mine operations
  • Port and bulk handling terminals
  • Waste management sites.

Environmental Consultants who require defensible particulate measurement for their clients’ air quality permits.

Regulatory authorities who require deployable rapid response monitoring.

Environmental Health and Safety (EHS) managers who need to demonstrate that they are providing a safe work environment.

Researchers who are on a limited budget and want to collect accurate, scientifically robust data.

What is it and what can it measure?

The Dust Sentry is a modular air quality monitoring instrument for the measurement and compliance of specific dust and particulate designation. It gives continuous real-time data on total suspended particulate matter (TSP) using a well proven near forward light scattering nephelometer – with a measurement range of 0-60,000 μg/m3.  It is a flexible instrument that can be configured for many different applications. By adding a sharp cut cyclone, the Dust Sentry can be quickly and easily upgraded to measure PM10, PM2.5 or PM1. For simultaneous measurement of PM2.5, PM10, PM1 and TSP see the Dust Sentry Pro.

Options to integrate environmental sensors, such as wind, noise, weather and solar radiation make this a complete air monitoring solution for your project.

Packaged in a robust weather-proof, lockable enclosure, the Dust Sentry is light enough for one-person site installations. Integrated solar shielding prevents the enclosure from overheating in climates with high solar irradiance.

Smart technology

A nephelometer is an optical sensor that uses light scattering from particulate matter to provide a continuous real-time measurement of airborne particle mass. The light source is a visible laser diode and scattered light is measured in the near forward angle using focusing optics and a photodiode. The nephelometer has an on-board temperature sensor which corrects for thermal drift, sheath air filter to keep the optics clean and automatic baseline drift correction.

The inlet is fitted with a heater that is used to remove moisture from the incoming sample. Moisture can reduce the accuracy of optical measurement, so for best results the inlet heater is activated in the event of high humidity.

Air monitoring software and communication

The instrument includes an embedded PC, up to 20 years of on board data storage, and a powerful air quality monitoring software. With Aeroqual Cloud you can remotely access data via a web browser on any device, even when your instrument is offline. Capabilities include:

  • Wireless communications
  • Integrated data platform
  • Wind and pollution roses
  • SMS and email alerts
  • Access through an API

To view more information visit the Air Quality Monitoring Software page.


Keep calibration up to date without the downtime. Maintaining an up-to-date calibration certificate gives you and project stakeholders confidence in the data from the air monitoring instruments. Our Hot-swap Service makes the process of factory calibration easy. We send you a freshly calibrated module from our stock. You replace the old module with the new one and send the old one back to us. And that’s it – calibration all up to date and zero downtime. 

Read full details on the Aeroqual Hot-swap Service page.

    • Range 0-60,000 μg/m3
    • Forward light scattering Nephelometer
    • Inlet and heated sampling tube
    • Brushless DC pump sampling module
    • Weatherproof lockable IP65 enclosure and integrated aluminum solar shields
    • Power and data interface for designated third party sensors and embedded PC
    • Integrated power switch; Main, Off, Battery
    • 100-260 Vac power supply
    • Communications: WIFI, Ethernet (LAN) Optional modem: Cellular IP 3G HSPA or 4G LTE for USA only
    • Embedded fanless PC (Intel Celeron® N3350, 1.1GHz, dual core, 4GB RAM, 32GB SSD hard drive), Ubuntu Linux Operating System
    • Aeroqual Cloud instrument monitoring, management and technical support via secure cloud servers, accessed via web browser (IE, Firefox, Chrome, Safari).
      • Aeroqual Cloud Support features; configuration, calibration, diagnostics, remote technical support, real-time data in tables, data journal entries
      • Aeroqual Cloud Plus features; SMS and email alerts, third-party sensor measurements, full data visualization with charts, wind and pollution roses, data reporting with auto data export and full API access, instrument network management
    • Pole and wall mount brackets
    • Side mounted carry handle
    • Documentation: Hard copy: Calibration Certificate; Soft Copy on USB stick: User Guide, Calibration Certificate
    • Manufacturer’s Standard 12 month Warranty
    • Unlimited access to the Aeroqual online learning system
  • Aeroqual Cloud - Air Quality Monitoring Software

    Aeroqual Cloud, Air Quality Monitoring Software

  • Novalynx-Silicon-Pyranometer

    Novalynx Silicon Pyranometer

  • Flowmeters


  • Moxa G3111-HSPA Modem

  • Zero Filter & Flow Assembly

    Zero Filter & Flow Assembly

  • Nephelometer Filters

    Dust Monitor Filters

  • Dust Monitor Service Kit

    Dust Monitor Service Kit

  • Cirrus MK427 Noise Sensor

    Cirrus MK427 Noise Sensor

  • Gill Ultrasonic Wind Sensor

    Gill Ultrasonic Wind Sensor

  • Met One MSO Weather Sensor

    Met One MSO Weather Sensor

  • Vaisala WXT520 Weather Sensor

    Vaisala WXT536 Weather Sensor

Shaoxing EPA (PM2.5 monitoring network)

SCS Engineers (Remediation dust monitoring)

SISK Group (Construction dust emissions)

Tonglu EPA (PM2.5 monitoring Network)

Road Metals Quarry (Aggregate quarry)

Ridley Coal Terminals  (Coal handling terminal)

Emirates Aluminium (Dust monitoring at world’s largest aluminium smelter)

If you have a question about this product, it may be covered in the FAQs section.

These cover the most common questions you may have when deciding if this is the right product solution for your air monitoring requirements.

If you can’t find what you’re looking for, please get in touch and our team will respond within 48 hours.


Related products

  • AQS1 Compact Ozone and PM2.5 Monitor

    AQS 1 Urban Air Quality Monitor

  • AQM 65 Air Monitoring Station with Integrated Calibration

  • Dust Sentry PM2.5 Dust and Particulate Monitor

    Dust Sentry PM2.5 Monitor

  • Portable particulate monitor PM2.5 and PM10

    PM10 / PM2.5 Portable Particulate Monitor