mass flow controller Articles

  • Direct Mass Flow or Volumetric: The Thermal Flow Meter Technology Advantage!

    In today’s world where everyone is watching the bottom line, you need high performance, cost-effective instrumentation—and capillary thermal mass flow meters and controllers have been proven to meet this criteria in a wide range of process applications. Thermal mass flow technology is an industry standard for mass flow control of gases because it measures flow directly, at the ...


    By Sierra Instruments, Inc.

  • The ‘Swiss Army Knife’ of Mass Flow Controllers

    Did you ever wish your mass flow controller could do it all? You’re not alone. End users ranging from machine builders to laboratory researchers are often faced with the challenge of needing flow measurement and control equipment for a wide variety of applications. Many customers call the SmartTrak 100 mass flow ...


    By Sierra Instruments, Inc.

  • The evolution of thermal mass flow meters

    Who were some of the pioneers in thermal mass flow technology? A. Thermo-Systems, Inc. (TSI) began in its founder’s basement in 1959, with a cooled-film anemometer designed for transient measurements in high temperature fluid flows. This led to TSI’s hot-film and hot-wire anemometers, the first commercial products of this type. These immersion-type devices were used mainly as ...


    By Sierra Instruments, Inc.

  • Gas Mass Flow Control: Why Thermal Mass Flow Technology is Recommended for Best Accuracy!

    It’s no secret. Price, but perhaps more importantly, performance, drive every new product acquisition you make.  How important is measurement accuracy and control to your lab experiment or industrial process? It’s critical.  If your flow readings are off or the flow is not controlled with precise accuracy your research is compromised, product quality suffers, and processes ...


    By Sierra Instruments, Inc.

  • Applications guide to mass flow measurement in the chemical industry

    Today's chemical plants facc escalating costs and tightening EPA control requirements. Sierra thermal mass flow meters provide the precise, useful data plants need. They can make a significant difference in all the following applications: Greater Control of Gas Flow to Batch Reactors The flow rate of gas to a batch reaction process often varies. The reac- tion rate is high at the ...


    By Sierra Instruments, Inc.

  • 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.

  • Applications guide to mass flow measurement in the petroleum industry

    The measurement and control of gas flows in production, refinery, and R&D operations has a direct effect on efficiency, costs, safety, and environmental standards. Sierra mass flow meters and controllers pro- vide direct, fast-response measurement at all levels, to make any opera- tion more effective. Here is a brief summary of the advantages they offer the industry. Direct, Wide-Range ...


    By Sierra Instruments, Inc.

  • Applications guide to mass flow measurement in the power industry

    Precise, timely measurement of air, fuel, and gases is one way today's utilities can take action to protect themselves against rising costs and comply with increasingly stringent environmental requirements. Sierra thermal mass flow meters and control systems are designed expressly to fill these needs. They can make utilities more cost-effective in a variety of applications: Real-Time Fuel Line ...


    By Sierra Instruments, Inc.

  • Capillary Tube Thermal Mass Flow Meters & Controllers - A User`S Guide - White Paper

    Abstract Capillary tube thermal mass flow meters directly measure the mass flow rate of clean gases and gas mixtures in lower flow ranges. A capillary tube thermal mass flow controller adds an integrally mounted flow control valve to the flow body of the mass flow meter and bom monitors the mass flow rate and controls it to be equal to a set-point value selected by the user. ...


    By Sierra Instruments, Inc.

  • Industrial thermal mass flow meters Pt.1 -Pt.2 - measurement & control

    An industrial thermal mass flowmeter measures either the mass velocity at a point in a flowing gas or the total mass flow rate through a channel or pipe. Figure 1 shows a typical thermal mass flow sensing element. It consists of two sensors: a mass flow sensor and a temperature sensor, which automatically corrects for changes in gas temperature. Both sensors are reference- grade platinum ...


    By Sierra Instruments, Inc.

  • 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.

  • Axetris Mass Flow Controllers being used for CO2 isotope tracking using QCL - Case Study

    Empa utilizes Axetris mass flow controllers (MFCs) in its research laboratory at the "Top of Europe." Swiss Federal Laboratories for Materials Science and Technology (Empa) currently use Axetris mass flow controllers (MFCs) in its research laboratory at the Jungfraujoch High Altitude Research Station, located at the “Top of Europe.” Axetris MFCs were chosen to ...


    By Axetris Ag

  • Applications guide to mass flow measurement in the pulp & paper industry

    Rising costs and tighter emission control requirements have created a need for information that is more useful and precise. Sierra thermal mass flow meters fill this need and support cost-effective mill management in die following applications: Increased Boiler Efficiency Mills need to measure the How of combustion air to the recovery or power boiler to provide accurate air flow ...


    By Sierra Instruments, Inc.

  • Differentiation of Mass and Flow Limited Rainfall-Runoff Events for Overland Flow from Small Urban Catchments

    ABSTRACTWater quantity and quality are coupled phenomena in urban rainfall-runoff. These rainfall-runoff quantity and quality relationships have been significantly altered by the built environment and associated anthropogenic activities. Understanding the relationship between quantity and quality of urban overland flow for a given catchment facilitates development of in-situ wet weather control. ...

  • Measurement of NAPL–water interfacial areas and mass transfer rates in two-dimensional flow cell

    The nonaqueous-phase liquid (NAPL)–water interfacial area and the mass transfer rate across the NAPL and water interface are often key factors in in situ groundwater pollution treatment. In this study, the NAPL–water interfacial area and residual NAPL saturation were measured using interfacial and partitioning tracer tests in a two-dimensional flow cell. The results were compared with ...


    By IWA Publishing

  • Detailed characterisation of essential oils by flow-modulated GC×GC and Tandem Ionisation mass spectrometry

    Volatile oils of plants, also known as essential oils, have been used for many years for their flavour, fragrance and medicinal properties. However, their extreme complexity and diversity presents analysts with a significant challenge when it comes to quality control. They are generally composed of monoterpenes and sesquiterpenes, as well as their oxygenated derivatives, such as aliphatic ...


    By SepSolve Analytical

  • Providing Precision Flow Control Solutions for Critical Biomolecular Research

    When scientists at the University of Nottingham’s Centre for Biomolecular Sciences (CBS) in the United Kingdom needed instrumentation to control the flow of gases in their research, they turned to Litre Meter, a UK distributor for Sierra Instruments, and the SmartTrak 100 series mass flow meters and ...


    By Sierra Instruments, Inc.

  • Simplified mass balance method: An accurate way to track refrigerant emissions

    With the simplified mass balance method, current levels of harmful refrigerant gases or other chemicals that harm the environment, such as hydrofluorocarbons (HFCs) and chlorofluorocarbons (CHCs), can be calculated and work to better predict of future levels of accumulated emissions formulated. This emissions information enables environmental scientists and government regulators to better ...


    By Verisae

  • How viscosity affects flow rates?

    Choose the Best Peristaltic Pump for the Job! A frequent question regarding peristaltic pumps is how viscosity affects flow rate. The short answer is; as viscosity increases, flow rates decrease. That being said, there are various factors which need to be understood when considering a peristaltic pump for any application that requires pumping viscous fluids. The physical ...


    By Randolph Austin Company

  • Calcium Sulfate Scale Control with ML2580

    Background Mining company operates an ore roasting operation for gold recovery in the western US. SO2 is generated in the process and quenched with water creating a super saturated stream of SO4 . Calcium sulfate (gypsum) scale forms in the process plumbing and reduces critical flow rates. After months of reduced production, the decision was made to shut down and hydro-blast the system. The ...


    By ChemTreat, Inc.

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