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TunnelTech 202

CO, Visibility Monitor

The TunnelTech 202 Air Quality Monitor is an essential part of any road or rail tunnel safety system. Firstly, it 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 to clearly see the road ahead.

The TunnelTech 202 analyzer uses well-proven infra-red techniques to determine CO concentration and optical attenuation to monitor visibility levels. 


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