mass flow 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 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.

  • 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 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.

  • 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.

  • 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.

  • 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.

  • Determining Proper Cooling Tower Size

    To maximize water-based cooling tower benefits, the appropriate tower size must be selected, requiring the identification of several critical factors. Cooling towers are a relatively inexpensive and reliable way of expelling heat from a number of industrial processes, including nuclear & thermal power plants, petroleum refineries, petrochemical plants, food processing plants, as well as HVAC ...


    By Delta Cooling Towers, Inc

  • Two Detector Solution to Analyzing Sulfur

    Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...


    By Restek Corporation

  • Webinar Highlights: Microfluidics for macromolecules

    Hi, I’m Jim Murphy, Principal Consulting Chemist at Waters, and I recently collaborated with Lucinda (Cohen) Hittle to present an exciting webinar on the use of microflow chromatography for macromolecules.  Lucinda, a Director of Discovery Bioanalytics at Merck, presented an overview of the use of LC-MS for peptide analysis along with various case studies for in vitro and in vivo ...


    By Waters Corporation

  • 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.

  • Validation of a mass consistent flow model as part of a decision support system

    In the context of real time (online) decision support systems for nuclear installations, atmospheric dispersion and deposition has to be calculated for a mesoscale area. Typically, the wind field in this area is influenced by topography. Therefore, simple Gaussian type modelling is not appropriate. Initiated and funded by the Bundesamt fur Strahlenschutz, simple (diagnostic mass consistent) flow ...


    By Inderscience Publishers

  • Sensor design the key advantage in thermal mass flow meter performance

    Immersible thermal sensors arc finding growing acceptance in the gas flow measurement field. By using two Platinum Resistance Temperature Detectors (PRTDs) immersed in a stream of flowing gas, modern thermal flow meters can directly measure mass flow, without the need for temperature or pressure compensation. Thermal meters offer very high turndown, accu- racy and repeatability at an economical ...


    By Sierra Instruments, Inc.

  • 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.

  • Introducing a New Paradigm for Thermal Dispersion Mass Flow - White Paper

    Introduction Since the publication of the American Society of Mechanical Engineers (ASME) standard on thermal dispersion mass flowmeters in 2011, there have been major advancements in the technology. A review of that standard and a discussion of technology advancements provide the background to understanding groundbreaking innovations in sensor design. That, along with a comprehensive ...


    By Sierra Instruments, Inc.

  • Mass flow and energy efficiency in a large water reclamation plant in Singapore

    This paper presents the results of a measured data-based mass flow and balance study in UluPandan Water Reclamation Plant (WRP), the second largest municipal wastewater treatment plant in Singapore. The results are benchmarked against the Strass wastewater treatment plant in Austria, which has achieved energy self-efficiency. The gaps between the two plants have been identified and areas for ...


    By IWA Publishing

  • 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.

  • 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. ...

  • 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.

  • 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.

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