Smart environmental monitoring solutions
The TunnelTech 101 Visibility Monitor (VIS) is an essential part of any road or rail tunnel safety system. Firstly, it monitors the visibility within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air for drivers to clearly see the road ahead.
Secondly, used in combination with other TunnelTech 101 VIS monitors, the operator can quickly detect the focus of the fire if it is also equipped with the optional PT100 temperature sensor to accurately measure ambient air temperature in a range of -15 to 105°C.
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Have questions? Call +61 2 9622 6327
The TunnelTech 101 Visibility Monitor (VIS) monitors the visibility within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air for drivers to clearly see the road ahead.
The TunnelTech 101 Visibility Monitor (VIS) is an essential part of any road or rail tunnel safety system. Firstly, it monitors the visibility within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air for drivers to clearly see the road ahead.
Secondly, used in combination with other TunnelTech 101 VIS monitors, the operator can quickly detect the focus of the fire if it is also equipped with the optional PT100 temperature sensor to accurately measure ambient air temperature in a range of -15 to 105°C.
| Gas Species Options | Visibility |
| Measuring Units | K factor(M-1) or metres |
| Measurement Range | 0 – 0.015m-1 |
| Ambient Temperature | -20°C to +50°C |
| Power Supply | 24V DC |
| Construction | Aluminium enclosures |
| Analogue Outputs | 1 x 4-20mA isolated current output, 500Ω maximum load, fully configurable through TunnelMaster software |
| Relay Outputs | 1 x volt-free SPCO contacts, 50V, 1A maximum load, configurable as alarm contacts |
| Series Data | RS485 – Modbus RTU |
Talk to our sales team. Call +61 2 9622 6327
The TunnelTech 305 Air Flow Monitor (AFM) is CODEL's industry proven tunnel air flow monitor.
The TunnelTech 900 is a low-cost precision road and rail tunnel monitor using proven technology to provide accurate and rapid results.
The TunnelTech 201 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 201 analyser uses well proven infra-red techniques to determine CO and NO concentrations and optical attenuation to monitor visibility levels. As there is only one moving part, reliability levels are very high and maintenance requirements are extremely low.
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 602 Illuminance photometer monitors the average illuminance within a tunnel and its surroundings
Tunnel Monitors