Environmental Monitoring Solutions
A low-cost precision road and rail tunnel monitor using proven technology to provide accurate and rapid results.
The TunnelTech 900 is an all-in-one Visibility and Air Quality Monitor based on backscatter light measurement technology for visibility and electrochemical cell technology for gas measurements.
It offers reliable visibility measurement and optional electrochemical cells to deliver superb and reliable gas measurements at a very competitive price.
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Have questions? Call +61 2 9622 6327
A low-cost precision road and rail tunnel monitor using proven technology to provide accurate and rapid results.
The TunnelTech 900 is an all-in-one Visibility and Air Quality Monitor based on backscatter light measurement technology for visibility and electrochemical cell technology for gas measurements.
It offers reliable visibility measurement and optional electrochemical cells to deliver superb and reliable gas measurements at a very competitive price.
| Gas Species | Visibility (standard), CO, NO, NO2 & SO2 (optional) |
| Measuring Units | m-1 (K factor) / E/m for visibility, ppm for CO, NO, NO2, SO2. |
| Ambient Conditions | -20oC to +60oC |
| Construction | SS316L (Standard) Silver / Brushed Metal SS316Ti (Optional Brackets) |
| Analogue Outputs (optional) | Up to 6 mA Loop outputs – 4-20mA Passive or Active Max Load 500Ω, isolated, fully configurable Up to 6 Relay outputs – SPCO, Max Load 500mA @ 60V DC, configurable as alarm contacts |
| Display | Monochrome LCD Display & Keypad Membrane |
| Power Supply | 24V DC |
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 205 NO2 Air Quality Monitor is a highly efficient transmissometer configured for the continuous measurement of Nitrogen Dioxide in road tunnel atmospheres.
The TunnelTech 400 analyser electrochemical cell technology determines CO, NO NO2, SO2 or O2 concentrations. With no moving parts, reliability levels are extremely high and maintenance requirements are very low.
The TunnelTech 601 Luminance photometer monitors the average luminance of a tunnel entrance and its surroundings
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.
Tunnel Monitors