density meter Articles

  • Traffic Noise Mapping in Chile

    Against this backdrop of economic change, a two-year study got underway across three Chilean cities led by the Univ. Austral. and was supported by the Chilean Ministry of the Environment. Academically titled: “Development and analysis of noise maps of three urban agglomerations using modeling software”, the study concentrated on the Chilean cities of Coquimbo – La ...


    By Cirrus Research plc

  • New Bird Netting Means “No Vacancy” for Crows at Hotel - Case Study

    Springhill Hotel in Temecula, California was having a problem with black crows. The birds were building nests, leaving bird droppings on and around the hotel, and creating considerable noise, which disturbed hotel guests. Installation of Bird B Gone Heavy Duty Bird Netting. Issues to be addressed: Prevent large numbers of crows from congregating around the hotel property. The ...


    By Bird-B-Gone, Inc.

  • New ways for Metal Recycling

    REWAVE XRF 3-way-sorting in innovative  “Free-Fall”-design Recycling of metal and aluminium knows no limits because it can be remelted as scrap indefinitely. Metals, however have to be separated from non-metallic impurities, and different metals have to be sorted in pure fractions to be used as secondary raw materials substituting primary resources. Especially when it ...

  • Integrating toxicity reduction strategies for materials and components into product design: A case study on utility meters

    Using RIO Tronics utility meter products as an industrial case study, the numeric Fraunhofer Toxic Potential Indicator (TPI) assessment tool is employed to determine high impact materials with the aim of reducing the content of inherently toxic substances in these products. However, because product re‐design with alternative materials affects entire components, overall component toxicity ...


    By John Wiley & Sons, Ltd.

  • 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.

  • Tech Note: Flare Gas Measurement Innovation; Retain Flow Metering Accuracy Even if Gas Composition Changes

    It’s a fact oil wells almost always produce natural gas along with the petroleum. Nine times out of ten, the excess gas (typically hydrocarbons) is flared off or simply vented as-is during upset conditions in the process. The environmental impacts of “flaring” this excess gas into our atmosphere has resulted in government regulations like 40 CFR Part 60 Subpart OOOO (also ...


    By Sierra Instruments, Inc.

  • 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

  • Core technology part 3: thermal--multivariable mass vortex

    In 1997, Sierra Instruments took proven vortex shedding technology to the next level with the launch of the Innova-Mass® Model 240 & Model 241 Multivariable Mass Vortex Flow Meter. Sierra was the first to offer this unique solution for measuring the mass flow of gases, liquids and steam. Vortex shedding flow meters have been in use for many years. The typical device is a flanged in-line ...


    By Sierra Instruments, Inc.

  • Results from Australia: Forest Road landfill life extended +50% with TANA E520 compactor

    Optimizing landfill life by choosing the most efficient landfill compactor is giving Forest Road landfill more operation years. "Waste density in completed cells will now be increased from approximately 800 kg/cubic meter to 1200-1400 kg/cubic meter under standard operating conditions", says Jon Beckett, Waste Services Manager. ...


    By Tana Oy

  • Monitor Dredging Slurry Flow from Outside the Pipe

    Dredging Equipment Manufacturers Choose Non-Contacting Greyline Flow Meters The Challenge Thousands of dredges are operated to maintain navigation channels in our rivers, lakes and harbours and to mine sand and gravel for the construction industry. Managing and optimizing production from a dredge requires continuous monitoring of pipeline pressure, vacuum ...


    By Greyline Instruments Inc.

  • REDmeters - Blue Paper

    REDmeters: Abstract The process of controlling and the cost of monitoring slurries in many industries are normally accomplished using various continuous mass flow systems. These types of systems usually contain a magnetic flow meter and a line density meter. There is inherent cost associated to these systems due to the inaccurate nature of these meters. Some meters on the market boast up to ...


    By REDmeters

  • Measurement of glucose nanoparticles concentration in plasma and blood accurately using laser sheet interferometry

    Diabetes is one of the major diseases in Egypt and perhaps all over the world. Diabetic patients suffer from many acute and chronic symptoms and diseases which may lead to blindness, reduced blood circulation in extremities arising ulcers and gangrenes. In this paper, we present a new technique called the laser sheet interference technique developed by the first author, for measuring the optical ...


    By Inderscience Publishers

  • Effect of sodium azide on the metabolic activity of cultured fetal cells

    Sodium azide is a highly toxic substance. However, the mechanism of its toxicity has not been fully established. In the present study, we attempted to investigate the toxicity of sodium azide in various cultured fetal cells, using changes in cellular respiration as an indicator of metabolic inhibition to elucidate tissue-specificity. The human fetal cell lines used in this study included ...


    By SAGE Publications

  • Dewatering Crews Keep the Alameda Corridor Dry and Open for Business

    Griffin installed a multitude of deep wells along the alignment of the proposed railway to allow for construction. The discharge from the wells was pumped via large diameter high density polyethylene pipe (HDPE) to a below grade mixing vault, where a neutralizing agent was introduced to the groundwater as the quality of the groundwater was not allowed to discharge to the designated receiving ...


    By Griffin Dewatering

  • Modeling of radial well lateral screens using 1D finite elements

    A water supply system including radial wells (RWs) is usually large, extending several tens of kilometers horizontally and is dozens of meters deep. An RW is a vertical shaft with lateral screens, which radially penetrate the soil. A large and complex 3D finite element (FE) mesh also needs to include laterals with cross-sectional dimensions measured in centimeters. An adequate representation of ...


    By IWA Publishing

  • Influence of earthworm Eisenia fetida on Iris pseudacorus's photosynthetic characteristics, evapotranspiration losses and purifying capacity in constructed wetland systems

    Four constructed wetland systems were studied to investigate the effects of adding Eisenia fetida on the purifying capacity of constructed wetlands. Addition of E. fetida increased the photosynthetic rate (Pn), transpiration rate (Tr) and chlorophyll meter value of leaves of Iris pseudacorus L. in the ...


    By IWA Publishing

  • Kerr-McGee dredging case study

    Application:Clean and dredge paint pigment residuals Dredge Used: LWT 7MAU Series Pit Hog™ Dredge Project Summary: Electric manned automated dredge with 3 Krebs cyclones with a capacity of 2,100 gpm, magnetic flow meter to monitor pump performance, slurry density meter to maintain consistent percent solids by varying traverse speed, and ...

  • A simple numerical method for snowmelt simulation based on the equation of heat energy

    This paper presents one-dimensional numerical model for snowmelt/accumulation simulations, based on the equation of heat energy. It is assumed that the snow column is homogeneous at the current time step; however, its characteristics such as snow density and thermal conductivity are treated as functions of time. The equation of heat energy for snow column is solved using the implicit finite ...


    By IWA Publishing

  • Lowmac Alloys Recycling Services - Case Study

    Alloys offer a broad range of recycling services, to companies all over the west of Scotland, from their two main bases at Irvine and Ayr. The company needed a two-phase upgrade of their existing facility to handle an increasing and diverse workload, which included metal recovery, fines extraction, wood, hardcore, hard plastics, ferrous and non-ferrous materials among others. This demanded a ...

  • Lowmac Alloys upgrades Recycling Services - Case Study

    Lowmac Alloys offer a broad range of recycling services, to companies all over the west of Scotland, from their two main bases at Irvine and Ayr. The company needed a two-phase upgrade of their existing facility to handle an increasing and diverse workload, which included metal recovery, fines extraction, wood, hardcore, hard plastics, ferrous and non-ferrous materials among others. This ...

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