gas control Articles

  • Advances in gas control technology in the brewery

    The use of nitrogen as a process gas, foam enhancer and flavour modifier has come to the fore over the last 10 years, with dissolved gas specifications becoming more stringent. Increasingly, marketing and consumer requirements for a targeted product identity or image have to be met, not only for taste but, perhaps equally as importantly for the consumer, ...

  • Comparative analysis of modern control and AI–based control for maintaining constant ambient temperature

    The objective of this paper is to study various control techniques in order to maintain constant ambient temperature by controlling the position of gas solenoid valve and expansion valve that control the volume of gas flow to the burner and volume of cool air flow into the room. In order to control the room temperature conventional P, PI, PID, model reference control (MRC), fuzzy logic control ...


    By Inderscience Publishers

  • Low emission l/P convertors for natural gas meet new environmental regulations

    Overview Low emission pneumatic controllers and overall carbon footprint reduction are today's hot topics for electro-pneumatic control systems. As shown in the chart below, pneumatic controllers have been viewed as a significant source of greenhouse gas emissions!. Since natural gas is often an abundant pressure source, it is common practice to tap this gas as the supply ...


    By Rotork plc

  • Gas flow control method of recycling gas drilling technology

    Recycling gas drilling is a new drilling technology. The paper based on the theory of gas transient flow, a set of theoretic models of gas flow control at the export of annulus are set up in combinations of the principles of the seepage flow mechanics and the characteristics of recycling gas drilling technique. According to the basic laws which the flowing gas should comply with, the properties ...


    By Inderscience Publishers

  • Thermo Fisher Centrios Improves Semiconductor Circuit Editing for Process Nodes 14nm and Above

    Next-generation, cost-effective solution for front- and back-side edits enables rapid prototyping Circuit edit (CE) engineers, whether supporting designers or in service labs, who are looking for a cost-effective solution can increase their productivity with the next-generation Thermo Scientific Centrios circuit edit system. Announced today at the International Symposium for Testing and ...

  • Minute Flow Tip! Don’t Settle for “Good Enough

    The capillary thermal technology used in every SmartTrak mass flow controller measures flow directly, at the molecular level. In essence, counting and controlling every gas molecule flowing through the instrument to achieve unmatched precision. Unaffected by upstream gas temperature and pressure fluctuations, gas mass flow control is direct and ...


    By Sierra Instruments, Inc.

  • Biomedical research looks to thermal mass flow controllers

    Precision control in biomedical research is critical for the success of any experiment. This is especially true for gas mixing and blending applications. These gas mixing applications often involve the creation of artificial atmospheres or other gas mixtures. To get statistically sound results, scientists must achieve precision flow control in creating these mixtures for sensitive experiments. In ...


    By Sierra Instruments, Inc.

  • Eridania (ITA) Agricultural Plant - Case Study

    Digester: 3.250 m³ beet chips, corn 1 x 999 kWel scope of delivery:  detailed design, agitators, gas handling equipment, instrumentation, control, plant start-up Start-up: ...

  • Greenhouse Gas Emissions Control

    Most of the time, people think about Greenhouse Gas (GHG) emissions with carbon dioxide, which is the most common of the GHGs. While fairly typical, carbon dioxide isn’t the only GHG U.S. Environmental Protection Agency (EPA) regulates.  Since EPA has begun regulating GHG emissions under its Clean Air Act authority, sources of emissions from others may require add-on air pollution ...

  • Mass Flow Control in Bioreactors - Case study

    Vogtlin mass flow controllers are an excellent tool for precise control of gas flows in bioreactors. Bio reactors are used for critical and delicate processes where mass flow control of relevant gases need to be reliable, repeatable and flexible. For example, the dissolved oxygen needs to be carefully controlled to obtain repeatable pH control and volumes of fermentation gases like CO and H2 ...


    By iCenta Controls Ltd

  • Utilisation of Municipal Solid Waste Compost as landfill cover soil for reducing greenhouse gas emission

    Municipal Solid Waste Compost (MSW-C) was introduced for improving landfill cover soil properties and enhancing methane oxidation. The landfill cover soil was irrigated with leachate for maintaining appropriate moisture content for methane oxidation reaction. It was found that MSW-C was an effective landfill cover material for landfill gas emission control exhibiting the highest Methane Oxidation ...


    By Inderscience Publishers

  • Applications guide to mass flow measurement in the primary metals

    Mass flow meters can provide precision measurement and control of proccss gases in many phases of plant operation. They make processes more repeatable and provide greater control over quality and costs. Sierra mass flow meters were designed for these purposes. They can make any plant more cost-effective in several ways: Aluminum Purification: Automated Gas Flow Control The last ...


    By Sierra Instruments, Inc.

  • Lucent Technologies low level oxygen removal

    The increasing complexity and level of intergration in ULSI devices is requiring higher levels of water purity.  A typical wafer uses between 20 to 200 separate rinsing steps.  Impurities in the rinse water such as particles, high dissolved oxygen content, organic contaminants and gas bubbles can cause defects.  Controlling oxide formation on the wafer surface is one of the reasons for reducing ...

  • Nonthermal Plasma Applications to the Environment: Gaseous Electronics and Power Conditioning

    Abstract—For nearly two decades, interest in gas-phase pollution control has greatly increased, arising from a greater respect for the environment, more attention to the effects of pollution, and a larger body of regulations and laws. Nonthermal plasma (NTP) technology shows promise for destroying pollutants in gas streams and cleaning contaminated surfaces, using plasma-generated reactive ...

  • New Video: Master Your Mass Flow Control Challenges

    For over 40 years, Sierra has pioneered the development of precision gas mass flow controllers. Today, our high-performance SmartTrak lineup, with over 100,000 successful installations, proves we’ve never let up. For Lab Researchers and  ...


    By Sierra Instruments, Inc.

  • Nano-structural and surface characteristics of non-stoichiometric In2O3−x thin films

    In this work we present recent results on non-stoichiometric In2O3−x thin films grown by dc magnetron sputtering technique focusing on structural and surface characterisation using cross-section transmission electron microscopy (XTEM), Atomic force Microscopy (AFM) and X-ray diffraction (XRD). The films were amorphous in the early stage of growth becoming crystalline after a critical thickness. ...


    By Inderscience Publishers

  • Applications guide to mass flow measurement in the pharmaceutical and biotech industries

    Pharmaceutical and biorech companies can fine-tune costs, quality, and emissions if they are equipped with more effective measurement sys- tems. Sierra mass flow meters and controllers provide precise measure- ment and control designed for process industries. They can make any plant more cost-effective in the following ways: Controlling Gas Flow To Fermenters The flow of gases to ...


    By Sierra Instruments, Inc.

  • NOx Control on a Budget

    National, regional and local regulations to reduce NOx emissions have prompted the development and implementation of a number of NOx control technologies – from selective catalytic reduction and low-NOx burners to overfire air and flue gas recirculation. Induced flue gas recirculation (IFGR), a design derivative of conventional forced flue gas recirculation, has demonstrated NOx reductions as ...

  • Investigation of the effects of temperature and sludge characteristics on odors and VOC emissions during the drying process of sewage sludge

    Sludge drying is a necessary step for sludge disposal. In this study, sludge was collected from two wastewater treatment plants, and dried at different temperatures in the laboratory. The emission of odor and total volatile organic compounds (TVOCs) during the sludge drying process were determined by an online odor monitoring system. The volatile organic compounds (VOCs) in off-gas were analyzed ...


    By IWA Publishing

  • A Hazardous Road to Success

    Chromatotec have established themselves in the Forefront of Sulphur Analysis in Hazardous Areas. Their latest Enhancement of their MEDOR range has Augmented their Rapid Rise in this Expanding Market. Most natural gas production and exploitation sites are considered to be hazardous area. This is certainly the case when it comes to Liquefied Petroleum Gases (LPG) sites. It is vital ...


    By Chromatotec Group

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