conductive limit level switch Articles

  • Texas Instruments - A Novel Separation Technique for the Analysis of Trace Levels of Atmospheric Contaminants in Inert Semiconductor Process Gases

    A NOVEL SEPARATION TECHNIQUE FOR THE ANALYSIS OF TRACELEVELS OF ATMOSPHERIC CONTAMINANTS IN INERTSEMICONDUCTOR PROCESS GASES J. Scott McWilliams, Alan Johnson, Charlene Long, Jeremiah D. Hogan*Texas Instruments, Inc.Dallas, TX 75265 Low ppb detection limits for contamination in cylinder gases have been achieved with gas chromatography using a modified gas ...


    By Environics, Inc.

  • An intelligent battery information management system to support information sharing and vehicle routing planning for battery distribution in Hong Kong

    Recently, the deployment of electric vehicles (EV) has been recognised as a key element for establishing sustainable transport systems within countries. Research studies have been conducted to tackle challenges regarding the commercial introduction of EV. However, the current plug–in EV infrastructure poses operational limitations, causing users refusing to change from fossil–fuelled vehicles to ...


    By Inderscience Publishers

  • Case study - TPH Oil & Grease applications

    These case studies illustrate the performance generated from customers who have used Sitelab’s UVF-3100 analyzer for testing total petroleum hydrocarbons in the C10 to C50 range. Sitelab’s TPH-Oil calibration kit is designed to correlate well to laboratory “Oil and Grease” test methods. This includes EPA Methods 1664 and 9071B by Gravimetric, EPA Method 418.1 by Infrared ...


    By Sitelab Corporation

  • High reactivity Metakaolin utilized in high performance Virginia bridge case study

    The Virginia Department of Transportation and Marshall Concrete Products have included Headwaters Resources’ HRM modified concrete as one of the high performance concrete mixes for the Virginia DOT “Smart Road” research project. Unlike most research that investigates one item on a limited scale in a laboratory, the Smart Road is a $35 million combined construction and research ...


    By Headwaters, Inc.

  • EPA Proposed “Franken-MACT” for Utilities

    EPA published the highly anticipated proposed Maximum Available Control Technology (MACT) Standard for the utility sector (40 CFR 63 Subpart UUUUU). When considered together with the growing list of proposed and final rules impacting the utility sector (Transport Rule/Cross-State Rule, Coal Combustion Byproducts Rule, Cooling Water Intake Rule, Regional Haze Rule, revised National Ambient Air ...


    By Trinity Consultants

  • Condenser performance optimization and life extension case study

    In 2007 Intek was presented with performance enhancement requirements imposed on an existing Westinghouse condenser. The objective was to determine if the condenser performance could be improved from design capability and to estimate the achievable amount of improvement. The principal drivers for the retrofit were load limiting conditions in the summer time and a desire to switch tube material ...


    By Intek, Inc.

  • ”Catalytic VOC oxidation has been an excellent VOC elimination method in our paint plant”, Pekka Kotilainen, Environmental Manager, Tikkurila Oyj, FIN

    Tikkurila has been succesfully treating VOC emissions in paint production with catalytic VOC incinerator for years For already 17 years, Tikkurila has been treating the VOC emissions in Finland’s paint production plant with the first regenerative catalytic VOC oxidizer on the market. Catalytic incineration has proven to be a very applicable, easy and effective way to respond to ...


  • New study sheds light on methane leakage from natural gas

    Natural gas wells represent a significant source of U.S. greenhouse gas (GHG) emissions, as many of them leak methane, which is more than 20 times more potent than carbon dioxide. But while scientists know that ...

  • Mercury Analysis

    Characteristics of Mercury What is Mercury? Mercury is a naturally occurring silver-colored metallic element noted for its occurrence as a liquid at room temperature and toxic to living organisms. This silvery, opaque liquid metal is very dense, yet has a high surface tension that causes it to form tiny perfect spheres in the pores of the rocks it is found in. It is ...


    By HORIBA Europe GmbH

  • Common Treatment Technologies for Nonhalogenated VOCs

    Soil vapor extraction (SVE), thermal desorption, and incineration are the presumptive remedies for Superfund sites with nonhalogenated VOC-contaminated soil. Because a presumptive remedy is a technology that EPA believes, based upon its past experience, generally will be the most appropriate remedy for a specified type of site, the presumptive remedy approach will accelerate site-specific ...

  • Bioventing systems at Alaska air force base achieve cleanup closures

    The U.S. Air Force and Alaska Department of Environmental Conservation (ADEC) collaborated in installing and operating seven full-scale bioventing systems over the last 10 years to address hydrocarbon and VOC contamination at the King Salmon Airport (KSA) in Alaska. Five of the systems achieved cleanup closure within five years of operation, and another is currently under closure review. The ...

  • Park City, Utah Arsenic removal from ground water

    Background Park City Utah Water, which serves a population of 6,500, has five water sources. Spiro Tunnel and Spiro Portal are two that were in need of Iron and Manganese removal as well as above limits for Arsenic. Filtronics was engaged by the engineering firm of Eckhoff, Watson and Preator (EWP), Salt Lake City, to perform pilot tests for the Park City Municipal Corporation. The ...


    By Filtronics, Incorporated

  • Pollutants, Aquaco Water Recycling Ltd can offer a solution

    With ever increasing demands from the Environment Agency to minimise pollutants in water effluent arising from industrial processes, Aquaco water recycling ltd can offer a solution which works well in many industries. This is the Red Box Electro Coagulation system whereby contaminants are flocculated by an electrical process into a size which can then be filtered, pressed and disposed of. The ...

  • Case Study: Glastonbury Festival - Noise Monitoring At Glastonbury Festival

    In 1970, an entrance fee of just 1.00 would have permitted you, and about another 1500 'free spirits' to enjoy a weekend of listening to the likes of Quintessence, Marc Bolan and T-Rex, while at the same time savouring the undoubted 'delights' of free raw milk!! Almost three decades later, and at slightly greater expense, you and over 100,000 other people can now enjoy the delights and unique ...

  • States propose attainment designations for the new 1-hour So2 NAAQS

    The U.S. EPA revised the primary National Ambient Air Quality Standard (NAAQS) for sulfur dioxide (SO2) on June 2, 2010 by implementing a new 1-hour standard of 75 parts per billion (ppb) (calculated as the three-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations). Based on an evaluation of the risks posed by acute exposure to SO2, EPA ...


    By Trinity Consultants

  • Flooding of lowland peatlands in Southeast Asia

    Vast lowland areas of Southeast Asia will be frequently and irreversibly flooded before the end of the century unless action is taken to stop the destruction of peatlands. A radical change in land-use is needed. In particular the palm oil and pulp wood sectors must stop developing new plantations on peat and plan to phase-out existing drainage-based plantations before they are flooded. If no ...


    By Wetlands International

  • Titanium Scrap Metal Processing

    Background A world-class processor of titanium scrap had a wash system whose cleaning solution was becoming contaminated with both free floating unemulsified tramp oil and emulsified water soluble oil that was being washed off of titanium turnings. As the level of oil contamination increased over time in the wash solution, cleaning effectiveness diminished. The processor uses a metric, ...

  • Integration of Subsurface Data Management and GIS to Facilitate Model Calibration

    Abstract The development of numerical codes, as well as pre- and post-processors to support these codes, has made the discipline of groundwater modelling increasingly more automated and efficient. The value of such modelling is reliant on the site-specific data used to build and calibrate the models. The integration of EarthSoft's EQuISÒ Geology and any of several popular modelling environments ...


    By EarthSoft, Inc

  • San Francisco Takes Residential Organics Collection Full-Scale

    After two and a half years of conducting a variety of pilot residential curbside organics collection programs that included food and soiled paper, the City and County of San Francisco (referred to hereafter as “the City”) and Sunset Scavenger Company are commencing a citywide rollout of the Fantastic Three Program. This new, innovative program will include the separate collection and composting ...


    By BioCycle Magazine

  • Cleaner Production Demonstration Project at Schweppes Cottee`s

     Table of contents Executive Summary 1. Review of Schweppes Cottee´s Operations 2. Planning and Organisation ...


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