Tunnel Monitoring Equipment

74 Results found
  • Category: Monitoring & Testing ×

  • Subcategory: Tunnel Monitoring ×

TunnelCraft - Model III - Visibilty Air Quality Monitor (AQM)

by Codel International Ltd     based in Bakewell, UNITED KINGDOM

The TunnelCraft III Visibility Air Quality Monitor (AQM) uses visible light channels to measure the visibility within a tunnel environment. The AQM consists of a transceiver that projects visible light to a reflector unit mounted 3m away. The reflected light is received by the transceiver and the specific absorption is measured to determine the ...

DURAG - Model D-R 220T - Visibility Monitor System

by DURAG GmbH     based in Hamburg, GERMANY

Visibility Monitor for road tunnels using optical transmission principle. Sensor for ventilation control system or fire alarm system. Reliable measurement parallel to the tunnel axis.

JES - Model LWA-LC - Illuminance Photometer

by JES Elektrotechnik GmbH     based in Hallein, AUSTRIA

Stationary sensor to measure the illuminance. Analogue output 4 - 20 mA corresponding to 0 - xx lx (xx stands for the end of the measuring range that needs to be specified when ordering). Operating voltage 24 VDC. Optionally also available in a heated housing (IP65) with dimensions 300 x 250 x 140 mm (requires 230 VAC supply for heating). Output ...

Tunnel Sensors - Model VIPA MkII - Visibility Monitor for Tunnels

by Tunnel Sensors Limited     based in Brackley, UNITED KINGDOM

The VIPA MkII tunnel monitor makes a visible opacity measurement to determine the visibility within the tunnel. These measurements can be used as part of an air quality management system for ventilation control and/or secondary smoke detection within a traffic tunnel, rail tunnel or other confined space.

DURAG - Model D-FL 220T - Ultrasonic Flow Velocity Monitor System

by DURAG GmbH     based in Hamburg, GERMANY

Measuring system for continuous evaluation of flow velocity and flow direction in tunnels. Ultrasonic sensors for tunnel ventilation control system. Reliable measurement across the tunnel profile. Two identical sensors alternately transmit and receive ultrasonic pulses. The system evaluates the transition times dependant on direction and ...

Tunnel Sensors - Model ECOM - Electrochemical CO Monitor for Tunnel

by Tunnel Sensors Limited     based in Brackley, UNITED KINGDOM

The ECOM tunnel monitor measures the concentration of carbon monoxide (CO) within an ambient environment such as road, rail, meteorological or other industrial application. These measurements can be used as part of an air quality management system for ventilation control and/or secondary smoke detection within a traffic tunnel or other confined ...

Tunnel Sensors - Model VNOX - NO2 and Visibility Monitor for Tunnels

by Tunnel Sensors Limited     based in Brackley, UNITED KINGDOM

The VNOX tunnel monitor uses differential optical absorption to measure nitrogen dioxide (NO2) in tunnel atmospheres and makes a visible opacity measurement to determine the visibility within the tunnel. These measurements can be used as part of an air quality management system for ventilation control and/or secondary smoke detection within a ...

Tunnel Sensors - Model VCOM - CO and Visibility Monitor for Tunnels

by Tunnel Sensors Limited     based in Brackley, UNITED KINGDOM

The VCOM tunnel monitor measures the concentration of carbon monoxide (CO) in tunnel atmospheres and makes a visible opacity measurement to determine the visibility within the tunnel. These measurements can be used as part of an air quality management system for ventilation control and/or secondary smoke detection within a traffic tunnel or other ...

TunnelCraft - Model 4 - Air Flow Monitor (AFM)

by Codel International Ltd     based in Bakewell, UNITED KINGDOM

The Air Flow Monitor (AFM) uses ultrasonic technology to measure air velocity. A single transmitter and an array of four receivers are contained in the measuring head. Air velocity and direction are calculated from measurements of the phase shifts from the ultrasonic signals at the receivers. The sensor is compact, contains no moving components, ...

TunnelCraft - Model 4 - CO/VIS Air Quality Monitor (AQM)

by Codel International Ltd     based in Bakewell, UNITED KINGDOM

The TunnelCraft 4 CO/VIS Air Quality Monitor (AQM) uses infrared light and visible light to measure carbon monoxide and visibility in a single compact instrument. The AQM consists of a transceiver that projects infrared beams to a reflector unit mounted 3m away. The reflected light is received by the transceiver and the specific absorption is ...

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