low gas flow measurement Articles

  • How Does a Water Flow Meter Work?

    A water flow meter is a device that measures the amount of water flowing through a pipe. There are several water flow meter technologies to choose from depending on the water measurement application, maintenance requirements, and budgetary terms.  Each of these types of water flow meters has a unique principle of operation, specific application benefits, and overall ...


    By Sierra Instruments, Inc.

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...

  • Measuring of landfill gas production

    Type     HOFGAS®- Smarty S  Commissioning     2002 Site     Nurmijärvi (FI) Situation An accurate estimation of the landfill gas production will support the operator at the Nurmijärvi landfill site in planning the final gas collection and degassing system. A mobile degassing plant was installed to measure the quantity ...


    By Hofstetter BV

  • Measuring and interpreting gas flow from landfill boreholes case study

    Current landfill gas measurement practice for measuring the gas composition is well understood, and there are standard procedures and instruments available to analyse the gas. It is also current recognised practice to measure the gas 'flow' from boreholes to monitor the production of gas in a landfill site. If care is taken to make the measurement in the same way each time, changes in the ...

  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

  • Flow measurement technology comparison: GA5000 Vs Hot Wire Anemometer

    A typical landfill or contaminated land site under investigation will comprise of a suitable number of gas monitoring wells, with a planned series of monitoring visits.  The monitoring will include gas flow measurements, which together with methane and carbon dioxide concentrations will be used to calculate gas screening values (GSV) and hence allow the determination of whether any gas ...

  • Low emission combustion of Oilgas

    Type     HOFGAS®- IFM4c/2300/150 Commissioning     June 2001 Site     Cistierna (ES) Situation Enervisa SA in Cistierna own a plant for the recycling of old oils. The oil is evaporated and condensed into high-grade fuel. The reclaimed fuel is used in diesel engines for production of electricity as well as in burners for the ...


    By Hofstetter BV

  • Minute Flow Tip Video - Mass Flow Versus Volumetric Flow Technology

    When engineers and systems integrators need to measure gas flow rate in an industrial process or scientific research, there are many types of technologies to choose from.  This makes selecting the right gas flow meter a challenge. In addition to technology, engineers must consider many other parameters: price for value, cost of ownership, size of footprint, ...


    By Sierra Instruments, Inc.

  • Retrofit decreases dissolved oxygen at low load

    Teresa Hansen, Section Editor Entergy’s Little Gypsy Unit 2 is a 450 MW gas-fired (with an oil alternative) thermal power plant originally designed for base load operation. Since changing over to peaking power operation, the plant has had problems with excessive dissolved oxygen (DO), especially during periods of low load. Entergy hired Intek Inc. to use a nontraditional ...


    By Intek, Inc.

  • Distributed Measurements Unlock the Future of Design

    The next generations of materials and design will require sensing technologies that can monitor beyond the scope of point sensors such as thermocouples and strain gauges. New sensing platforms based on optical fibers can obtain spatially continuous, real time data, giving developers detailed insight across broad areas into how their materials and designs behave. Such systems also can sense ...


    By Sensuron

  • New Developments in Thermal Dispersion Mass Flow Meters: In-The-Field Compensation for Changes in Natural Gas Composition

    Introduction The flow of natural gas in pipelines is often complicated by changes in the composition of the gas. The method described in this paper solves the problem of variable composition via a new four-temperature mass flow sensor. The new (low sensor feeds its measurements into the algorithms of an advanced mathematical model that includes gas properties in its calculations. The method ...


    By Sierra Instruments, Inc.

  • Can low oil prices be good for the environment?

    Deepwater drilling rigs are sitting idle. Fracking plans are being scaled back. Enormous new projects to squeeze oil out of the tar sands of Canada are being shelved. Maybe low oil prices aren't so bad for the environment after all. The global price of oil has plummeted 31 percent in just five months, a steep and surprising drop after a four-year period of prices near or above $100 a barrel. ...


    By Associated Press

  • Wastewater Plant Relies on Thermal Flow Meter for Co-Gen Power Gas Blending Process

    The Rahway Valley Sewerage Authority (RVSA), which operates a large wastewater treatment plant in New Jersey, embarked on a green co-generation waste-to-energy project to power a portion of its operations. The plant performs primary, secondary, tertiary and sludge treatment processes in serving over 250,000 residential customers and 3000 industrial and commercial customers in a 40-plus square ...


    By Modern Pumping Today

  • TVOC measurement for LEED/green building evaluation

    Total Volatile Organic Compounds (TVOC) may be evaluated when building designers/managers are pursuing the Leadership in Energy and Environmental Design Green Building Rating System for New Construction (LEED-NC) EQ Credit 3.2. The latest LEED-NC guidance document specifies that the maximum allowed concentration of TVOC measured in a building (post construction, pre-occupancy) is 500 µg/m3; the ...


  • Developing a Novel Device for Accurate Biogas Concentration Measurement

    Due to increasing awareness on the impact of fossil fuels on the environment, and heavier taxes on carbon emissions there is a worldwide effort to seek renewable sources of energy – alternative energy sources that increase energy efficiency and security.  A renewable source that’s gained significant attention in recent years is biogas, one of the most ...


    By Edinburgh Instruments Ltd

  • Gas-to-energy plant; production of electricity with landfill gas

    Type      Degassing installation HOFGAS®- Ready 600 Commissioning      January 2002 Site      Landfill of Bovenfeld (NL) Situation The 9ha large landfill site Bovenfeld is located 150km northeast of Amsterdam. The resulting landfill gas has to be cleaned, in accordance with the local legislation. A degassing ...


    By Hofstetter BV

  • Design and Evaluation of a Flow Pump System for Column Testing

    The design of the equipment components of a flow pump system for the measurement of solute (effluent) breakthrough curves from soil columns is described. In addition, the performance of the system in terms of the effects of equipment components and temperature on measured differential pressure fluctuations across soil specimens is illustrated. The flow pump for the system provides continuous flow ...


    By ASTM International

  • Detection of moisture in ammonia gas

    Problem Statement As technologies advance, so does the request for ultra high purity ammonia. Ultra high purity (UHP) ammonia is used in the semiconductor industries, production of flat panel displays, and a number of other applications. Due to this rising interest in UHP ammonia, manufacturers are having to battle ammonia’s most prominent and damaging impurity--moisture. For ...


    By CIC Photonics, Inc.

  • How Does a Water Flow Meter Work?

    A flow meter works by measuring the amount of a gas, liquid or steam that passes through or around the flow meter sensors. While flow meter sensors work in many different ways, the end goal is the same: Deliver the most accurate and repeatable flow measurements for the specific application, whether for general research, process control or semiconductor processing. Flow meters measure either mass ...


    By Sierra Instruments, Inc.

  • High temperature combustion of landfill gas

    Type     Compact plant HOFGAS® - Efficiency 250 Commissioning     December 2001 Site     Storkohmo landfill, Kokkola (FIN) Situation Storkohmo landfill is located 400km north of Helsinki on Finland's west coast near the city of Kokkola. Based on local legislation requirements ( reduction of green house gas emissions ) the ...


    By Hofstetter BV

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