TunnelTech 700 Electrochemical CO, NO & NO2 Air Quality Monitor


The TunnelTech 700 is an advanced technology analyser that gives complete flexibility in the choice of measurement options.

The TunnelTech 700 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 701 analyser electrochemical cell technology to determine CO, NO & NO2 concentrations and optical attenuation to monitor Visibility levels.

As there are no moving parts, reliability levels are very high and maintenance requirements are low. The sight tubes have been designed to ensure that airborne dust and contaminants do not reach the optical windows and cause drift.

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