Gas Monitoring Articles

  • New technology enables biogas plant optimization

    Governments around the world are seeking to lower greenhouse gas (GHG) emissions in the fight against climate change, to reduce waste to landfill, and to increase their utilisation of renewable energy in compliance with international agreements. Consequently, in many countries, subsidies have been made available to encourage the growth of the biogas sector. ...


    By Vaisala

  • Flare gas mass flow metering innovations promise more economical choices

    INTRODUCTION As the drive towards energy independence in the United States continues at full speed, oil and gas companies are turning to hydraulic fracturing to increase production. Increasingly stringent state and national regulations for flare gas in particular now require the installation of mass flow measurement instruments to measure waste and excess gases burned off as a result ...


    By Sierra Instruments, Inc.

  • Process gas mass flow controllers - An overview

    A mass How controller (MFC) is used 10 control the How of gases in a wide range of microelectronic processes. A well-designed MFC maintains a constant tlow within I percent of the full-scale flow, has a repeatability of 0.2 percent of full scale, and has a response time of 1 second to reach within 2 percent of the desired (command) flow, all of this is in response to any changes in command flow. ...


    By Sierra Instruments, Inc.

  • Conforming to GHG reporting rules – Case Study

    In 2011, a new EPA rule (40 CFR Part 98) went into effect requiring a wide range of companies that emit Green House Gases (GHG) to submit annual reports to the EPA. These were primarily large facilities emitting 25,000 metric tons of carbon dioxideequivalent (mtCO2e) or more of GHG emissions per year. ...


    By Sierra Instruments, Inc.

  • Fiberglass manufacturing requires precise gas ratio control – Case Study

    Fiberglass insulation manufacturing is almost akin to making cotton candy!  A mixture of silica and other components are melted and passed through a spinning extruder, then rapidly cooled with compressed air. As older fiberglass manufacturing plants have demonstrated, manual ...


    By Sierra Instruments, Inc.

  • Gas mixing and blending equipment – Case Study

    How They Work A specific gas blend within a chamber must be produced by a procedure known as ideal gas mixing (or gas blending). In this example, synthetic air composition is maintained at a mix ratio of 78% N2, 21% O2 and 1% Ar. A miniature Human/Machine Interface (HMI) with LCD touch screen monitors and controls the system automatically. The HMI communicates to ...


    By Sierra Instruments, Inc.

  • Lockhead advances cryogenic research - Case Study

    Lockheed Martin researches, designs, manufactures, and integrates advanced technology systems for the U.S. Department of Defense and NASA. Eric Roth, a Lockheed physicist, tests infrared sensors used for positioning systems in deep-space satellites and  super-conducting electronics. These instruments will not function at normal temperatures. Roth uses a cryogenic refrigerator to test that ...


    By Sierra Instruments, Inc.

  • Researchers create Martian environment - Case Study

    The pressure on Mars is less than one percent of what it is on Earth. The research of the Controlled Environment System Research Facility (CESRF) at the University of Guelph in Ontario, Canada includes evaluation of plant growth under these low pressures. In their studies of biological life support for future space exploration, their experiments utilize eight closed-loop hypobaric chambers. Each ...


    By Sierra Instruments, Inc.

  • Maximizing bioreactor performance - Case Study

    Paul Sauer, Associate Scientist of Protein Design Lab's Cell Culture Development Group, had two compelling reasons for specifying mass flow controllers for his work: The first was the need to acquire an array of data that would allow them to more effectively control fermentation processes; The second was the need to minimize the formation of foam in the bioreactor's headspace. To minimize foam, ...


    By Sierra Instruments, Inc.

  • Inspired innovation

    As the drive towards energy independence in the US continues at full speed, oil and gas companies are turning to hydraulic fracturing to increase production. Increasingly stringent state and national regulations for flare gas in particular now require the installation of mass flow measurement instruments to measure waste and excess gases burned off as a result of the hydraulic fracturing process. ...


    By Sierra Instruments, Inc.

  • Advanced thermal dispersion mass flowmeters

    Thermal dispersion (TD) mass flowmeters measure the mass flowrate of fluids (primarily gases) flowing through a closed conduit, such as a pipe. This article describes the operation and installation of TD mass flowmeters, and gives the reader information about what applications these meters are most suited for. Background The first general description of TD mass flowmeters is ...


    By Sierra Instruments, Inc.

  • Advantages of flexible flow measurement in sub-metering of natural gas

    The ability to measure gas flow more accurately with sub-metering based on a new technology, can result in substantial savings. Natural Gas: An Abundant Resource Unlike oil, natural gas exists in abundance in the United States. Of the natural gas consumed in the United States in 2011, 95% was produced domestically. The U.S. Energy Information Administration projects U.S. ...


    By Sierra Instruments, Inc.

  • The quest for the perfect flowmeter

    Gases & Instrumentation had the oppor-tunity to speak with Dr. John G. Olin, Founder and Chairman of the Board of Sierra Instruments about the evolution of thermal mass flow meters and his latest product in this technology. Gases & Instrumentation: You have been engaged in thermal mass flow technology for a number of years. You must have seen a lot of change. ...


    By Sierra Instruments, Inc.

  • Multiplexed Monitoring – To be Doubt or Not?

    There are several types of continuous emissions monitoring (CEM) systems. The technical designs may be very different, but they usually have a few things in common. The instruments providing the measurement results do not come cheap, and the systems require maintenance. However, if monitoring is to be done in more than one gas duct, then there might be a way to save costs, multiplexing. But ...


    By Opsis AB

  • Delphin Expert Vibro Used for Machine Vibration Analysis

    Continual Monitoring of Gas Turbines is Compact & Cost-Effective ...


    By Delphin Technology AG

  • Dust monitoring with ProSens on clean gas side - Case Study

    Application An international mining company extracts minerals under ground for the fabrication of fertilizers. For the long term improvement and safety of the structure stability fi llings and binders (dry bulks) with defi ned recipes are injected locally into former mining cavities. These materials are delivered above ground, stored in silos and afterwards transported in a ...


    By ENVEA

  • Filter damage monitoring with Dusty Ex - Case Study

    Application A chemical manufacturer producing photoinitiators. Photoinitiators are chemical compounds, which disintegrate after the absorption of light in a photolytic reaction. They produce reactive compounds, which are able to initiate a chemical reaction (for example a polymerisation). In praxis these initiators are used to harden lacquers and paints under the infl uence of ...


    By ENVEA

  • Dust concentration measurement with ProSens - Case Study

    Application A food manufacturer refi nes dairy products. The dust-laden exhaust air created during the manufacturing process is extracted by suction and cleaned by industrial fi lter systems. With increasing abrasion of the fi lter elements, the dust content in the exhaust air may rise and lead to increased environmental pollution. The continuous dust measurement (mg/m3) is ...


    By ENVEA

  • Dusty monitors quality of pressing tools - Case Study

    Application A manufacturer of food supplements produces tablets with different ingredients mechanically via pressing tools. The pressing tools eventually wear down during production. As the tools wear down there is an increase of dust particles created in the exhaust air of the machines. In this application our customer wants to measure the dust content in the exhaust air of ...


    By ENVEA

  • Emissions monitoring according to QAL1 - Case Study

    Application A chemicals company produces boron carbide from the raw materials boric oxide and carbon. Boron carbide powder is used for sintering and hot pressing. In other applications boron carbide is used as fi ller material for plastics, metals and concrete or, when used as a material component, increases the wear resistance of electrodes. The production process takes ...


    By ENVEA

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