Multi-lane, bidirectional tunnel anemometer

A smart, open-path, cross bore solution for measuring tunnel air velocity and direction.

The system consists of a pair of self-contained transceivers mounted on either side of the tunnel that relay intelligent and reliable ultrasonic transit time measurements.



  • No moving parts
  • SCADA / PLC interface options:
    • Current outputs
    • Digital relays
    • RS485 (Modbus RTU)
  • Wall-mounted alignment bracketry
  • Quick lock cable plugs for easy installation & commission
  • Simple maintenance – only requires annual check & clean