Tunnel Sensors range of tunnel monitors are supplemented with a variety of accessories designed to assist with installation, operation and maintenance and to ensure optimum performance and reliability.

TSCU Operator Interface

Universal operator interface compatible with the TSL range of instruments for local visual display of readings, fault warning or alarm conditions plus multiheading capabilities



Calibration Checking

A range of of optical filters and reference gas cells to enable routine calibration checking of the TSL instruments.



Operational Accessories

Additional items such as ready-made power /comms / output cables; PSU and termination units plus associated installation accessories such as mounting brackets, extension sight tubes and weather covers.


For further information and technical specifications about this product please download a product brochure alternatively contact us via phone or email and a member of our team will be happy to help.

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The outstanding reliability and accuracy of our combined solution makes Tunnel Sensors a preferred partner on which we can count.

Pierre Longtin
Nyx Hemera Technologies, Canada

Tunnel Sensors



The CROSSFLOW provides an open path cross
bore solution for measuring air velocity
and direction in a tunnel.


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


The AIRFLOW offers a rugged, non-contact solution for the universal requirement to monitor air velocity and direction in the tunnel.