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visibility monitoring Applications

  • Haze Monitoring

    The principle cause of regional and urban haze, or visibility impairment, is light extinction caused by fine particles, sulfates, organic and elemental carbon, nitrates and crustal matter. Particles between 0.1 and one micrometers in size are most effective at scattering light, in addition to being of greatest concern for human health.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

  • Dust monitoring and Sand Storm Monitoring

    The frequency and intensity of dust and sand storms in many parts of the world are steadily increasing due to droughts and climate change. The severity of such storms is anticipated to increase over the coming years. These dust storms may last hours or days and cause huge damage and imposed a heavy toll on society with its physical effects, such as visibility reduction, heavy winds, red sky, hailstone and severe lightning. Such Dust storms, have a negative impact on human health, and industrial products and activities. They reduce visibility, layer on skin and cloths, infiltrate buildings and find their way into food and drinking water leaving a permanent sandy feeling in your mouth. Traditional dust monitoring instruments whether they be purely filter based gravimetric samplers or continuous monitors utilising Tapered Element Oscillating Microbalance (TEOM) or Beta Attenuation (BAM) simply are unable to cope with the high dust loads created by these storms. The filters on these instruments are quickly clogged and no further measurements are possible until a service technician visits to replace filters and filter tapes. In dust storm events this is impossible. Therefore, over the past few years a need for alternate technology which are non filter based, can cope with extremely high dust loads, require minimal maintenance and can operate off solar power has been employed in regions such as the Gobi Desert of China for the continuous monitoring of dust storm events. These instruments have demonstrated that an instrument can measure dust storm events with maintenance performed only once every 12 months. That it is possible to communicate remotely and that these systems can not only provide an early warning for dust events but have the accuracy and sensitivity to be an extremely useful tool in gauging hourly changes of visibility. Infact such instruments have been utilised by a number of EPAs around the world, including all Australian EPAs for the purpose of measuring ambient visibility as well as providing an accurate indication of rising dust events.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

  • Premium

    Gas monitoring instruments and systems for titanium dioxide

    Titanium dioxide is the most important white pigment used in the polymer industry. It is widely used, because it efficiently scatters visible light, thereby imparting whiteness, brightness, and opacity when incorporated into a plastic product.

    By Gasmet Technologies Oy based in Helsinki, FINLAND.

  • Smoke generator device for leak testing & building envelope testing

    Smoke is the perfect medium for discovering where leaks are and how big they are! Filling a `leaky` building, ductwork, pipes, aircraft or containment area with smoke and ideally adding a small amount of pressure to the area being tested, will result in a visible discharge of smoke and, simply put, the greater the volume of smoke, the bigger the leak. After Concept developed a bespoke system for their aircraft testing requirements, a spokesperson for the RAF commented: `The use of smoke as a means by which to detect cabin pressurisation leaks has been shown to be extremely effective and is unquestionably superior to any alternative detection method used to date!`

    By Concept Smoke Systems based in Maidenhead, UNITED KINGDOM.

  • Smoke generator device for large scale external exercises and tunnel testing

    Making smoke in a very open environment or external environment can be a challenging! An oil-based smoke generator, such as a ViCount system, can produce dramatically more artificial smoke than multiple water based systems. This is due to the fact that the smoke ViCounts produce, being oil-based, does not evaporate in the same way and speed that water-based smoke does. The smoke from a ViCount smoke generator will travel for 1000`s of meters, compared to a typical water based smoke machine that may produce a smoke visible for 100 meters. Just one ViCount or Vulcan can replace 10 or more conventional water based smoke systems. ViCount`s have been used world wide for many tunnel smoke simulations, be it for RTA training / evacuation exercises or tunnel ventilation testing.

    By Concept Smoke Systems based in Maidenhead, UNITED KINGDOM.

  • Transport Meteorology

    The Biral sensors provide reliable, consistently accurate weather information day and night. This allows timely decisions to be made about spraying or gritting road surfaces and for switching road warning signs, achieving the best results from limited and valuable resources. In addition to the visibility and present weather sensors, Biral are the appointed UK Distributor for the meteorological instrument manufacturer, Adolf Thies GmbH & Co. KG. The Thies Clima range of meteorological sensors is highly respected and used globally in many advanced meteorological applications. It offers a complete and complimentary range of sensors allowing a highly specified meteorological monitoring station or system to be constructed. The range includes cup and vane and ultrasonic anemometers, temperature, humidity, pressure and radiation sensors, as well as a wide range of compact weather stations and precipitation sensors.

    By Biral - Bristol Industrial & Research Associates Ltd based in Portishead, UNITED KINGDOM.

  • Aviation Meteorology

    SWS and VPF sensors are used in airports throughout the world as part of aviation ground control and meteorological monitoring systems. Our visibility and ambient light sensors form the core of Runway Visual Range monitoring systems used to control the safe landing of aircraft in reduced visibility conditions. Our present weather sensors provide automated precipitation classification and monitoring that forms a vital part of the METAR signals broadcast to aircraft in the airport vicinity. The detection and reporting of thunderstorms is important in the aviation industry supporting both the safety of ground operations and the provision of meteorological data to aircraft and forecasting authorities. Our BTD-300 Thunderstorm Detector has been developed to be compliant with FAA regulations for lightning detection systems used at airfields.

    By Biral - Bristol Industrial & Research Associates Ltd based in Portishead, UNITED KINGDOM.

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