TunnelTech 204 Visibility Only Monitor
The TunnelTech 204 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 204 analyser uses well proven optical attenuation technology to monitor visibility levels.
As there is only one moving part, reliability levels are very high and maintenance requirements are extremely low.
- Continuous measurement of visibility in road and rail tunnels.
- Class leading Accuracy, Repeatability and Resolution.
- Rugged, corrosion resistant construction.
- Minimal maintenance requirements.
- Optional RS 485 (Modbus) Output.
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Frequently Asked Questions
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