absolute liquid level measurement Articles

  • Understanding Pump Cavitation

    Cavitation is a major problem in the chemical industry because it affects a basic tool, the centrifugal pump. A sudden increase in the velocity of the pumped liquid reduces the inlet pressure, sometimes below the vapor pressure.The result is formation of gas and bubbles. Detecting the signs of cavitation, and correctly identifying and understanding the type of cavitation present, can help an ...

  • Expanding Reservoir Air Filters

    In all vented tanks, the rise and fall of fluid levels is offset by a corresponding volume of incoming and outgoing air. Keeping the incoming replacement air clean is essential for contamination control and thus the reliability of hydraulic systems. While targeting the system's reliability, JLM Systems Limited has developed the OilMiser™ Reservoir Aspirator (ORA) kit. This product represents a ...


    By JLM Systems Ltd

  • Emissions Trading in China: First Reports from the Field

    When Tianjin launched its carbon emission trading scheme (ETS) on Dec 26th 2013, it became the fifth ETS operating in China, following Shenzhen, Beijing, Shanghai, and Guangdong. Now that five of seven pilots have started trading and the rest are expected to start in 2014, the aggregate of all emissions regulated in China through the seven pilots will be the second largest in the world, following ...

  • Picking the Perfect Pump

    By John Amundsen, District Manager The Gorman–Rupp Company Pumps and pumping systems are like unsung heroes of modern society – quickly and quietly transporting vital water supplies, chemicals and waste to and from locations, which rely upon their consistent, reliable operation. In fact, pumps and pumping systems are one of those entities that aren't ...


    By Gorman-Rupp Co.

  • A closer look at urban transport - TERM 2013: transport indicators tracking progress towards environmental targets in Europe

    Transport guarantees our mobility and access to goods. Moreover, the transport sector helps maintain and develop our societal and economic systems. Transport is also a main source of pressures on the environment, such as the unsustainable use of natural resources, as well as greenhouse gas, air pollutant and noise emissions. Many of these environmental problems are inter-linked, requiring ...

  • Filters for the Filter Manufacturer

    Filtration systems for manufacturing often require high-purity filters to remove contaminants from water, liquids or gases, as well as to optimize production and meet quality standards.  The right filters and housing greatly affect production outcomes, and can help reduce costs and protect equipment along the way. ...


    By Shelco Filters

  • NEC Directive Status Report 2014

    Reporting by Member States under Directive 2001/81/EC of the European Parliament and of the Council of 23 October 2001 on national emission ceilings for certain atmospheric pollutants This report describes the most recent emission inventory information provided by the Member States of the European Union (EU) at the end of 2014, under Directive 2001/81/EC of the European Parliament and of the ...

  • Webinar Recap: “Developing, Testing, and Troubleshooting Chromatography Method Transfer”

    Hi, I’m Tom Wheat, Principal Scientist at Waters, and I recently hosted a webinar entitled, “Developing, Testing and Troubleshooting Chromatography Method Transfer.” Over the course of the webinar, we discussed the transfer of chromatographic methods that occurs at many stages in the development and production of a product. In its simplest form, the method is moved from one ...


    By Waters Corporation

  • 63 Percent Diversion and Rising

    Untitled Document The City and County of San Francisco is making great strides towards ...


    By BioCycle Magazine

  • Annual European Union greenhouse gas inventory 1990–2013 and inventory report 2015 - Submission to the UNFCCC Secretariat

    ES.1 Background information on greenhouse gas inventories and climate change The European Union (EU), as a party to the United Nations Framework Convention on Climate Change (UNFCCC), reports annually on greenhouse gas (GHG) inventories for the years 1990 to t-2 for emissions and removals within the area covered by its Member States (i.e. domestic emissions taking place within its ...

  • Eastney -  Horsham, West Sussex - Case Study

    Project summary: ERG was contracted by Southern Water to provide increased air extraction and upgraded odour control at the Eastney Headworks site in Portsmouth. Key project data: The upgrade works more than doubled the extracted air flowrate to the odour control unit from 20,700m3/hr to 48,500m3/hr was completed with live sewage flow ...

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