Environmental Monitoring Solutions
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 airflow and direction developed within the tunnel. Three decades of development, knowledge and practical experience have been utilized to produce the advanced TunnelTech 801 air flow sensor that combines the reliability of ultrasonic technology and delivers superb accuracy and reliability.
The TunnelTech 801 has been specifically designed for the road, rail, and civil tunnel and ventilation shaft applications and represents the latest in compact ultrasonic sensor-head design. Ultrasonic time-of-flight measurement across any tunnel delivers a highly accurate airflow value and virtually eliminates traditional high-maintenance measurement techniques.
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Have questions? Call +61 2 9622 6327
The TunnelTech 801 monitoring system for continuous evaluation of air flow rate and flow direction in tunnels
Tunnel ventilation systems are designed to enable a sufficient through put 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. Three decades of development, knowledge and practical experience have been utilised to produce the advanced TunnelTech 801 air flow sensor that combines the reliability of ultrasonic technology and delivers superb accuracy and reliability.
The TunnelTech 801 has been specifically designed for road, rail and civil tunnel and ventilation shaftapplications and represents the latest in compact ultrasonic sensor-head design. Ultrasonic time-of-flight measurement across any tunnel delivers a highly accurate airflow value and virtually eliminates traditional high-maintenance measurement techniques.
| Gas Species Options | Airflow velocity, Volumetric flow, Airflow direction, Temperature |
| Measuring Units | Metric or Imperial units for all parameters |
| Accuracy | ±0.1 m/sec* |
| Measuring Technique | Across the tunnel, dual sensor, ultrasonic transit time principle |
| Measurement Range (Typical) | -40 to +40 m/sec, range is user configurable |
| Construction | Corrosion resistant IP65 / NEMA 4X enclosure (Kynar® 720) |
| Outputs Communication | RS485 Modbus, RJ45, 2x 4-20 mA, 2 x Form C SPDT relay, |
| Ambient Temperature Range | -40 to +85°C |
| Power | 24 VDC Power Supply |
Talk to our sales team. Call +61 2 9622 6327
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.
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The TunnelTech 305 Air Flow Monitor (AFM) is CODEL's industry proven tunnel air flow monitor.
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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 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