Tunnel Sensors

A global leader in the design and manufacture of speciality sensors for tunnel atmosphere monitoring.

Popular Tunnel Sensors

Below are our flagship tunnel sensor products, simply select them for more information

Viconox

Viconox

The VICONOX provides a total monitoring solution for the measurement of NO2, NO, CO, visibility and temperature within traffic tunnels.
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Airflow MkII

Airflow MkII

The AIRFLOW MkII is a robust, single point monitor designed to measure air velocity (and temperature when specified) within a tunnel environment.
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Crossflow

Crossflow

The CROSSFLOW provides an open path cross bore solution for measuring air velocity and direction in a tunnel.
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Tunnel Sensors - A network
of local distributors worldwide

Tunnel Sensors is a global leader in the design and manufacture of speciality sensors for tunnel atmosphere monitoring. We design and manufacture our own analysers specifically for pollution monitoring in the traffic tunnel environment.

We bring fresh ideas and technology to a sector that has traditionally used systems adapted from exhaust stack and chimney monitors. Our analysers are designed to be combined in a modular fashion, offering the flexibility to create monitoring systems specifically adapted to the requirements of individual tunnels. Because tunnels throughout the world have diverse requirements for data presentation, our systems also offer a flexible output and communication system that allows seamless integration with any existing tunnel system or bus.

Tunnel Sensors instruments are installed in more than 30 countries wordwide with references in:

Asia | Europe | Middle East | Americas | Oceania | Africa

Latest news

Keep up to date with the latest product information and news from tunnel sensors.

Which Toxic Gases Are You Measuring?

While modern, fuel efficient vehicles emit significantly less toxic gas (and particulate matter) compared to their predecessors, the need for road tunnel gas monitoring and efficient ventilation control systems are still vitally important to ensure the tunnel atmosphere remains safe. Noxious gases present in road traffic tunnels include Nitrogen Dioxide (NO2) Nitrogen Monoxide (NO) Carbon…

Make installation easier with the new CTU from Tunnel Sensors

As a result of market feedback requesting a flexible junction box and mains power supply, the team at Tunnel Sensors have developed a Combined Termination Unit, known as the CTU. The CTU is a rugged, wall mounted, fully customisable termination unit for installation alongside compatible Tunnel Sensors monitors, including the VICONOX, AIRFLOW-MKII and CROSSFLOW. A…
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