Tunnel Monitoring Equipment

35 Results found
  • Category: Monitoring & Testing ×

  • Subcategory: Tunnel Monitoring ×

NEW: AS32M - Analyzer for Quick and Direct (Without Conversion) NO2 Measurement

by Environnement S.A

Designed to alleviate potential disadvantages of the chemiluminiscence method and to provide the most accurate value for NO2 concentration measurements. No chemical conversion required, not sensitive to other nitro-containing species and no Toxic Gas Emissions. Exclusive benefits: “True NO2” measurement (i.e. without conversion), Ultra sensitive, ...

CAPS NO2 analyzer - AS32M - US EPA & TÜV certified

by Environnement S.A

• Precise and continuous NO2 monitoring (0-1 ppm)• Direct sample measurement - no chemical conversion required, no need for a convertor, ozone generator, external pump, scrubber and no Toxic Gas Emission• Very short response time: capable of detecting short events with high precision• Innovative, patented Cavity Attenuated Phase Shift ...

DURAG - D-R 220T - Visibility Monitor System


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.

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


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 ...

SANOA - Multi-Gas Long Path Air Quality Monitoring System

by Environnement S.A

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

FlashRES-UNIVERSAL 61-channel resistivity meter

by ZZ Resistivity Imaging Pty. Ltd.

FlashRES-UNIVERSAL is our most advanced 61-channel resistivity/IP system, and can be used for all kinds of resistivity surveys. It is controlled by an external tablet/laptop, providing better reliability.

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

by Optical Scientific Inc. (OSi)

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 ...

FlashRES-64 Budget 61-channel resistivity meter

by ZZ Resistivity Imaging Pty. Ltd.

FlashRES-64 is our budget-level resistivity/IP system. It is extremely fast, versatile, and cost-effective compared to other systems.

VICONOX - Visibility Monitor for Tunnels

by Tunnel Sensors Limited

The VICONOX tunnel monitor is a single sensor solution for measuring NO2, NO, CO, visibility and temperature within a traffic tunnel, rail tunnel or other confined space. These measurements can be used as part of an air quality management system for ventilation control and/or secondary smoke detection.

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