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Subway systems in America typically shuttle millions of people each day. Recent studies, however, have found levels of PM2.5 air pollution to be alarmingly high in these underground transportation networks. Tunnels are a restricted and confined environment, often with poor ventilation, making them naturally susceptible to air quality issues. Elevated levels of suspended PM2.5  air particulate can lead to respiratory conditions, lung cancer, and heart disease for commuters. Met One Instruments offers several candidate products to measure air velocity, temperature and humidity, and particulate concentrations for tunnel monitoring. We also offer OEM particulate count and particle mass engines that can be incorporated into comprehensive tunnel air monitoring and air handling systems. Sense and respond with confidence with Met One tunnel monitoring instrumentation.

E-BAM indoor
E-BAM indoor

Tunnel Monitoring Products:

  • E-BAM Plus - Met One Instruments

    E-BAM PLUS Portable Environmental Beta-Attentuation Mass Monitor

    The Met One Instruments, Inc. E-BAM Plus is a portable, real-time beta gauge which has EPA Approval for PM10 particulate measurements. The E-BAM Plus will satisfy users, regulators and those from the health community by providing truly accurate, precise, real...

  • BC-1060 - Met One Instruments

    BC 1060

    Our BC-1060 portable black carbon monitor measures and reports black carbon concentrations, with user-selectable time resolution down to one minute, at both UV (370 nm) and IR (880 nm) illumination wavelengths. The combination of portability and dual-wavelength illumination permits rapid,...

  • ES-405

    ES-405 Simultaneous Particulate Profiler

    The ES-405 is a near reference air quality sensor designed to provide accurate real-time measurements of PM10, PM4, PM2.5, and PM1 particulate concentrations simultaneously. It reports these four key particulate concentrations in both indoor and outdoor environments. The rugged weatherproof...

  • ES-412

    NEW ES-412 Portable Simultaneous Particulate Profiler

    Introducing the newest addition to Met One Instruments, Inc. line of Localized Particulate Monitors, the ES-412 Portable Simultaneous Particulate Profiler. As a Near-FEM (Federal Equivalent Method) product, the ES-412 provides the quality and day-to-day stability consistent with EPA quality objectives....

  • The ES-642 Remote Dust Monitor

    Remote Dust Monitor ES-642

    Met One Instruments’ ES-642 Remote Dust Monitor is an industrial air-quality sensor designed to provide real time particle concentration measurements in both indoor and outdoor environments. Our ES-642 measures particulate concentration using a highly sensitive forward scatter laser nephelometer, which...

  • Visibility Sensor 6400

    Met One Instruments’ Model 6400 Visibility Sensor is designed to monitor visibility conditions over a range of 20ft-50miles (6m-80km). Our Model 6400 includes both digital and relay outputs. The Digital RS232 output at 300-38,400 Baud can be used to indicate...

  • Swift 6.0 Flow Meter

    The Swift 6.0 is a multi-function Flow Meter specifically designed for accurate low rate measurements. The device’s easy to read display shows Flow Rate, Flow Temperature and Ambient Pressure. Flow measurements are traceable to our NIST standard and Certification is...

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