Conductivity Monitoring Articles

  • Micro Pulse LiDAR: A Critical Tool for Emissions Source Detection

    Micro Pulse LiDAR remote sensing data are used to calculate a highly accurate Planetary Boundary Layer (PBL) height to improve plume models that help assess emissions sources. Poor air quality is a growing health issue that has a negative impact on the quality of life for millions of people. To help alleviate this serious problem, scientists at Bubbleology Research International (BRI) have ...

  • Groundwater control during construction of the USSTRATCOM command and control facility - Case Study

    Project Name: Groundwater Control during construction of the USSTRATCOM Command and Control Facility Project Location: Nebraska Owner: Offutt AFB GC: Kiewit-Phelps, JV Engineer: US Army Corps of Engineers, Omaha District Project Revenue: $250,000.00 ...

  • King George V Willowstick Survey - Case Study

    Atkins used Willowstick to position diaphragm wall and stop leakage through 6.2km long embankment dam With over 6km of embankment locating the exact leakage paths and hence minimising the required diaphragm wall length was made possible with the use of Willowstick. Willowstick brought confidence in the correct location of the diaphragm wall and major cost savings to the client. ...


    By Willowstick Technologies LLC

  • Texas Earthen Dam Seepage Flow Path Study - Case Study

    Willowstick characterizes seepage flow paths through through the dam Background An engineering company was set to build a new outlet structure for a reservoir. They had been monitoring the dam for seepage and wanted to gain a better understanding of where seepage was occurring. Of significant importance to the client was the desire to characterize any preferential seepage ...


    By Willowstick Technologies LLC

  • Shaver Lake Dam Willowstick Survey - Case Study

    Willowstick significantly reduces grouting works at heavily reinforced concrete dam A Willowstick survey of Shaver Lake dam successfully identified seepage paths underneath the copper faced dam. As a result the survey significantly reduced the amount of grouting required bringing large cost savings to the client. Interference from reinforcement and copper sheeting was successfully avoided ...


    By Willowstick Technologies LLC

  • WiNG Wireless Leak Detection

    With over 35 years of experience and 16 million feet of patented leak detection cable in service globally, RLE’s proven to be the industry leader in leak detection.  Now we’ve combined our popular, dependable leak detection products with our cutting-edge WiNG wireless monitoring.  The result? A wireless leak detection solution that leverages all the benefits of both robust ...


    By RLE Technologies

  • Delivering mission critical for NASA – Case Study

    Early developments in the evolution of mass flow meters in the 1950’s were largely driven by the need for highly accurate readings. Over the last 50 years the demand for substantially reduced margins of error has only intensified. For the last 25 years, NASA has relied on the accuracy of ...


    By Sierra Instruments, Inc.

  • Lockhead advances cryogenic research - Case Study

    Lockheed Martin researches, designs, manufactures, and integrates advanced technology systems for the U.S. Department of Defense and NASA. Eric Roth, a Lockheed physicist, tests infrared sensors used for positioning systems in deep-space satellites and  super-conducting electronics. These instruments will not function at normal temperatures. Roth uses a cryogenic refrigerator to test that ...


    By Sierra Instruments, Inc.

  • Reducing the threat of carbon soot – Case Study

    The U.S. government now recognizes that black carbon soot is the number two cause of climate change and the most important component of air pollution affecting our public health. This soot, caused mainly by the burning of fossil fuels and firewood, is often found in huge smog-like plumes known as "atmospheric brown clouds." According to a report commissioned by the U.N. Environment Program, this ...


    By Sierra Instruments, Inc.

  • The quest for the perfect flowmeter

    Gases & Instrumentation had the oppor-tunity to speak with Dr. John G. Olin, Founder and Chairman of the Board of Sierra Instruments about the evolution of thermal mass flow meters and his latest product in this technology. Gases & Instrumentation: You have been engaged in thermal mass flow technology for a number of years. You must have seen a lot of change. ...


    By Sierra Instruments, Inc.

  • NASA`s secret weapon

    Thermal Flowmeters Helps NASA Get the Right Mixture Early developments in rhe evolution of mass flowmeters in rhe 1930s were largely driven by rhe need for highly-accurate readings. Over the last 50 years, rhe demand for siibstanrially-rediiced margins of error has only intensified. Sierra Instruments recently introduced a new series of meters daat would allow customers to ...


    By Sierra Instruments, Inc.

  • Mass flow sensing improves leak test efficiency

    Mass flow meters reduce risk of measurement error and provide a reliable, quantitative measurement of product quality and production process control. In the leak testing application, mass flow meters offer advantages unmatched by other instruments. Today, leak testing must be not only precise, accurate and irrefutable, but also easy-to-use, fast and efficient. With mass flow sensing, dry air ...


    By Sierra Instruments, Inc.

  • Particulate partial flow sampling

    The sampling method of the Sierra Instruments Model BG-3 sets the standard for engine particulate emissions measurement protocols of the future sierra instruments In a study at West Virginia University, evidence showed that the Sierra Model BG-3 partial-flow system is equivalent to full-flow CVS. At the August 2008 DEER conference, the university’s Dr Ben Shade presented a paper evaluating ...


    By Sierra Instruments, Inc.

  • Powertrain & Vehicle Research - Case Study

    The PVRU, the renowned Powertrain and Vehicle Research Unit at the University of Bath in the United Kingdom, decided to re-equip their engine test cell machines to expand capabilities for automotive dyno testing. They conducted an extensive market survey of test cell data acquisition and control systems, and chose to ...


    By Sierra Instruments, Inc.

  • FTIR Gas Analyzer Helps Pöyry in QAL2 and AST Compliance Measurements

    Several EU directives and national laws in the European countries set requirements for continuous monitoring of flue gas emissions. Pöyry helps industrial plants meet stringent environmental standards by offering emission measurement services like compliance measurements, for example. We spoke to measurement team manager Paula Juuti at Pöyry about her work with emissions ...


    By Gasmet Technologies Oy

  • A win-win relationship - Case Study

    Recycling areas: Tyre Company name: Imdex A/S Located: Farsø, Denmark Founded: 2002 Employees: 20 Imdex A/S became in 2002, an authorized reciever of old tyres by the Environmental Protection Agency (Consolidation ...


    By Eldan Recycling A/S

  • Lead and Polypropylene Materials from Car Batteries - Case Study

    Recycling areas: Various scrap Company name: MPI Recycling (MPI Reciklaža Metalurgija, plastika inženiring d.o.o.) Located: Črna na Koroškem, Slovenia Founded: 1990 Employees: 86 TAB is a Slovenian producer of lead acid flooded, VRLA AGM and VRLA Gel ...


    By Eldan Recycling A/S

  • Demystifying Thermopile IR Temp Sensors

    Thermopile temperature or temp sensors offer the advantage of non-contact temperature measurement, making them more and more popular over the standard contact-based temperature sensors. Thermopile sensors use infrared (IR) radiation versus conduction for heat transfer, which provides unique solutions that ...

  • Geopost Group - Uses Tennaxia to collect and manage its environmental data - Case Study

    In A Few Numbers Internationale express parcels service of the la Poste Group N°1 in France & n°2 in Europe Present in 140 countries 24000 employees Serve more than 230 countries ...


    By Tennaxia

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