Tunnel Monitoring Applications in Africa
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Ambient air quality monitoring solutions for tunnel monitoring
Car tunnels need ventilation in order to keep air pollution below the limits. When the pollution levels reaches a setpoint, the fans must be started and kept running until the pollution levels ...
By OPSIS AB Distributor in Lynnwood Ridge, SOUTH AFRICA.
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Emissions Monitoring for Tunnels
The Opsis monitoring solution is designed for high-quality gas measurement in traffic tunnels. The monitoring systems have been approved by the Germany TÜV and the U.S. EPA among ...
By OPSIS AB Distributor in Lynnwood Ridge, SOUTH AFRICA.
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Air Flow Monitoring for Tunnels
By Optical Scientific Inc. (OSi) Distributor in Meyerspark, SOUTH AFRICA.
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Tunnel solutions for the tunnel air flow
Tunnel ventilation systems are designed to enable a sufficient throughput of air to be maintained to ensure a safe operating environment for users. These systems consume large amounts of power and need to be operated as efficiently as possible. To do this it is necessary to know the effectiveness of the system in terms of air flow and direction developed within the tunnel. The TunnelTech 301 is a single point ultrasonic flow monitor that is unaffected by traffic flow and sound reflections. It is designed to ...
By Codel - a Forbes Marshall company Distributor in Centurion, SOUTH AFRICA.
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Tunnel solutions for the light sensors
According to the International Committee on Illumination CIE recommendations, luminance should be monitored as the luminance contained within in a conical field of view, subtending an angle of 20º. It is recommended that a luminance photometer is mounted in the tunnel approach road approximately 120 - 200 metres from the portal, depending on the approach speed of the vehicles and their stopping distance. The purpose of monitoring the luminance at the portal is to adjust the level of light intensity inside the ...
By Codel - a Forbes Marshall company Distributor in Centurion, SOUTH AFRICA.
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Tunnel solutions for the extractive areas
In some countries they do not allow tunnel atmosphere monitors to be mounted on the tunnel wall; also, where there is a single bore it is very difficult to gain access for maintenance purposes. The TunnelTech 400 series are extractive gaseous pollutant and visibility monitors and extract a gas and dust sample from the tunnel bore and carry to a remote analyser. This allows maintenance to take place without affecting tunnel traffic ...
By Codel - a Forbes Marshall company Distributor in Centurion, SOUTH AFRICA.
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Road tunnel atmosphere monitoring
CODEL's road tunnel monitors are designed exclusively for road tunnel applications. It offers a family of tunnel sensors that provide all the essential measurements necessary to monitor the tunnel ...
By Codel - a Forbes Marshall company Distributor in Centurion, SOUTH AFRICA.
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Tunnel solutions for the visibility monitor areas
The TunnelTech 101 Visibility Monitor (VIS), is an essential part of any road or rail tunnel safety system. 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. The TunnelTech 102 Cold smoke monitor (CSM detects smoke from a fire to rapidly warn the operator of the hazard. Secondly, used in combination with other TunnelTech 101 VIS monitors, the operator can quickly detect the locus of the fire if it is ...
By Codel - a Forbes Marshall company Distributor in Centurion, SOUTH AFRICA.
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