TunnelTech 801 Cross Tunnel Flow Monitor


The TunnelTech 801 monitoring system for continuous evaluation of air flow rate and flow direction in tunnels

Tunnel ventilation systems are designed to enable a sufficient throughput of air to be maintained to ensure a safe operating environment for users.

These systems consume large amounts of power and need to be operated as efficiently as possible. To do this it is necessary to know the effectiveness of the system in terms of airflow and direction developed within the tunnel. Three decades of development, knowledge, and practical experience have been utilised to produce the advanced TunnelTech 801 air flow sensor that combines the reliability of ultrasonic technology and delivers superb accuracy and reliability.

The TunnelTech 801 has been specifically designed for road, rail, civil tunnel, and ventilation shaft applications and represents the latest in compact ultrasonic sensor-head design. Ultrasonic time-of-flight measurement across any tunnel delivers a highly accurate airflow value and virtually eliminates traditional high-maintenance measurement techniques.

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