Tunnel Air Quality Monitors and Systems

Tunnel Air Quality Monitors and Systems

Codel International Ltd is a UK-company specializes in the design and manufacture of hightechnology instrumentation for monitoring atmospheric pollutant emissions and combustion processes. The company products cover a versatile range of instrumentation from low cost dust monitors through to fully automated and integrated emission monitoring systems.

Codel is a well know producer of tunnel air quality monitoring sensors and systems. In the last 20 years hundreds of Codel’s tunnel sensors have been installed in road and rail tunnels all over the world. With over 350 road and rail tunnel installations Codel is now recognized as the market leader.

TunnelTech (TT) is the latest generation of tunnel air quality monitors, designed mainly to be used in road tunnel applications and it consists of: 

  • Visibility monitors: TunnelTech 100 series
  • Air quality monitors: TunnelTech 200 series
  • Single point flow monitors: TunnelTech 300 series
  • Electrochemical cell air quality monitors: TunnelTech 500/700 series
  • Light monitors: TunnelTech 600 series
  • Cross tunnel flow monitors: TunnelTech 801
  • Visibility, CO/ NO/ NO2/ SO2 monitors: TunnelTech 900 series

Tunnel Sensors Product Range

TunnelTech 100 Series - Visibility
The TunnelTech 100 Series Sensors are an essential part of any road or rail tunnel safety system. It monitors the Visibilty within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air for drivers.
TunnelTech 200 Series - Air Quality
The TunnelTech 200 Series Air Quality Monitors monitors the atmosphere within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air to protect tunnel users health and for drivers.
TunnelTech 300 Series - Air Flow
The TunnelTech 300 Series Air Flow Monitors are proven tunnel air flow monitors that combine the reliability of ultrasonic technology and delivers superb accuracy and reliability at a very competitive price.
TunnelTech 500/700 Series - ECELL Range
The TunnelTech 500/700 Series use electrochemical cell technology to determine CO, NO & NO2 concentrations. As there are no moving parts, reliability levels are very high and maintenance requirements are low.
TunnelTech 600 Series - Light Sensors
The TunnelTech 600 series light monitors are CODEL’s industry proven llumiance and illuminance monitors for detecting light both inside and at the entrance of the tunnel.
TunnelTech 800 Series - Cross Tunnel Flow Monitors
The TunnelTech 801 has been specifically designed for road, rail and civil tunnel and ventilation shaft applications and represents the latest in compact ultrasonic sensor-head design.
TunnelTech 900 Series - Visbility, CO, NO, NO2, SO2 Monitor
The TunnelTech 900 is a Visibility monitor based on backscatter light measurement technology. It can also measure CO, NO, NO2 and SO2.
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