tunnel monitoring Equipment in Rwanda

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27 Results found
  • Category: Air & Climate ×

  • Subcategory: Air Monitoring ×

  • Keyword: tunnel monitoring ×

  • Location: Africa ×

  • Location: Rwanda ×

OSi - Model WSS-300-DS - Tunnel Wind Speed And Smoke Sensor

by Optical Scientific Inc. (OSi)     based in Gaithersburg, MARYLAND (USA)

For drift-free air flow measurements across traffic tunnels; WSS-300-DS calculates true average speed of air movement, and detects smoke. The sensor is equipped with Automatic Gain Control (AGC) to compensate for  opacity variations caused by particulates, smoke, or suspended moisture. The WSS-300-DS uses patented optical scintillation ...

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 III - Air Flow Monitor

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 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 ...

TunnelCraft - Model III - NO2 Air Quality Monitor (AQM)

by Codel International Ltd     based in Bakewell, UNITED KINGDOM

Nitrogen dioxide (NO2) is fast becoming the most important measurement in tunnels and will eventually replace nitric oxide (NO) as the key measurement. The TunnelCraft III NO2 Air Quality Monitor (AQM) uses a high-power blue LED to measure the attenuation of UV/blue light by NO2 in the tunnel atmosphere. The AQM consists of a transceiver that ...

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 ...

TunnelCraft - Model III - CO/NO/VIS Air Quality Monitor (AQM)

by Codel International Ltd     based in Bakewell, UNITED KINGDOM

The TunnelCraft III CO/NO/VIS Air Quality Monitor (AQM) uses both infrared light and visible light channels to measure carbon monoxide, nitric oxide 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 ...

TunnelCraft - Model III - CO/Visibility Air Quality Monitor (AQM)

by Codel International Ltd     based in Bakewell, UNITED KINGDOM

The TunnelCraft III 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 ...


Model SANOA - Multi-Gas Long Path Air Quality Monitoring System

by Environnement S.A     based in Poissy, FRANCE

Multigas Open Path Differential Optical Absorption (DOAS) Spectrometry Analyzer. Multiple applications An innovative technology for multigas air quality monitoring.

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 ...

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