Tunnel airflow monitors
CROSSFLOW is an open path, cross bore air flow sensor (anemometer) designed to measure air speed and direction in multi-lane and bidirectional tunnels. The system uses reliable ultrasonic transit time measurements between a pair of transceivers which are mounted and aligned on either side of the tunnel.
AIRFLOW MkII is a single point airflow monitor for tunnels that provides consistent and accurate measurements of air speed and direction using proven, ultrasound time of flight technology. It is a dual axis monitor that can measure air speeds of up to 60m/s with a resolution of 0.01m/s.
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