Smart environmental monitoring solutions
The TunnelTech 305 Air Flow Monitor, is an essential part of any road or rail tunnel safety system. Firstly, it monitors the airflow measurement as well as the direction of flow inside 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 305 uses dual-path ultrasonic technology to ensure high accuracy and have no moving parts, reliability levels are very high and maintenance requirements are very low. The sensor is constructed using stainless steel for ultimate protection against the harsh environments found in tunnels. Fully configurable analogue and alarm outputs are provided. An RS485 link can be utilised to deliver via MODBUS protocol to a SCADA system located in the tunnel control centre.
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Have questions? Call +61 2 9622 6327
The TunnelTech 305 Air Flow Monitor, is an essential part of any road or rail tunnel safety system. Firstly, it monitors the airflow measurement as well as the direction of flow inside 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 305 uses dual-path ultrasonic technology to ensure high accuracy and has no moving parts, reliability levels are very high and maintenance requirements are very low. The sensor is constructed using stainless steel for ultimate protection against the harsh environments found in tunnels.
Fully configurable analogue and alarm outputs are provided. An RS485 link can be utilized to deliver via MODBUS protocol to a SCADA system located in the tunnel control centre.
| Gas Species Options | Air Flow and Direction |
| Measuring Units | m/sec |
| Measuring Technique | Ultrasonic |
| Ambient Temperature | -20°C to +65°C |
| Power Supply | 12V DC @1.5A |
| Construction | SS316L / Ti – Designed to IP67 (IP69K Optional) |
| Analogue Outputs | 2 x 4-20mA current outputs as standard, isolated, 500Ω maximum load, fully configurable through TunnelTech software |
| Relay Outputs | 2 x volt-free SP contacts, 50V 400mA max, for flow direction and fault condition |
| Series Data | RS485 for local communication with laptop or modbus RTU protocol |
Talk to our sales team. Call +61 2 9622 6327
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 601 Luminance photometer monitors the average luminance of a tunnel entrance and its surroundings
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 205 NO2 Air Quality Monitor is a highly efficient transmissometer configured for the continuous measurement of Nitrogen Dioxide in road tunnel atmospheres.
The TunnelTech 102 Cold Smoke Monitor detects smoke from a fire to rapidly warn the operator of the hazard.
Tunnel Monitors