industrial mass flow meter Articles

  • 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.

  • It’s a sensor game

    From Sierra’s beginning over 40 years ago, founder Dr. John G. Olin was driven by the vision of supplying industrial customers with the world’s most accurate mass flow meter. And, he knew it was a ‘sensor’ game. With a background – and Ph.D. – in mechanical engineering and specialised in fluid mechanics and heat transfer, Olin was a driven innovator and ...


    By Sierra Instruments, Inc.

  • New Developments in Thermal Dispersion Mass Flow Meters

    Introduction This paper describes a newly developed microprocessor-based thermal dispersion mass flow meter that uses four temperature sensing elements in its flow sensor instead of the traditional two elements and automatically manages changes in gas selection, gas temperature, gas pressure, and outside temperature. This new mass flow meter is ideally suited for apportionment applications in ...


    By Sierra Instruments, Inc.

  • Advances in Thermal Dispersion Mass Flow Meters - Part 2 Installation and Flow Calibration

    Abstract Part 1 of this two-part series describes the principle of operation of a new microprocessor-based thermal dispersion mass flow meter that uses four temperature sensing elements in its flow sensor and has a dry velocity sensor. Part 1 shows how this unique system provides automatic management of changes in gas selection, gas temperature, gas pressure, and outside temperature. This Part 2 ...


    By Sierra Instruments, Inc.

  • Advances in Thermal Dispersion Mass Flow Meters - Part 1 Principle of Operation

    Abstract This paper describes an advanced microprocessor-based thermal dispersion mass flow meter that uses four temperature sensing elements in its flow sensor instead of the traditional two elements and has a dry velocity sensor that uses no potting materials instead of the traditional potted velocity sensor. This unique new mass flow meter automatically manages changes in gas selection, gas ...


    By Sierra Instruments, Inc.

  • Technology white paper: immersible thermal dispersion

    Thermal dispersion mass flowmeters comprise a family of instruments for the measurement of the total mass flow rate of a fluid, primarily gases, flowing through closed conduits. The operation of thermal dispersion mass flowmeters is attributed to L.V. King who, in 1914 (Ref. 1). published his famous King's Law revealing how a heated wire immersed in a fluid flow measures the mass velocity at a ...


    By Sierra Instruments, Inc.

  • A standard for users and manufacturers of thermal dispersion mass flow meters

    Thermal dispersion mass flowmeters comprise a family of instruments for the measurement of the total mass flow rate of a fluid, primarily gases, flowing through closed conduits. The operation of thermal dispersion mass flowmeters is attributed to L.V. King who. in 1914 (Ref. 1). published his famous King's Law revealing how a heated wire immersed in a fluid flow measures the mass velocity at a ...


    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 attributed to L.V. ...


    By Sierra Instruments, Inc.

  • Reducing the threat of carbon soot – Case Study

    The U.S. government now recognizes that black carbon soot is the number two cause of climate change and the most important component of air pollution affecting our public health. This soot, caused mainly by the burning of fossil fuels and firewood, is often found in huge smog-like plumes known as "atmospheric brown clouds." According to a report commissioned by the U.N. Environment Program, ...


    By Sierra Instruments, Inc.

  • A new paradigm for thermal dispersion mass flowmeters

    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 algorithm facilitated by ...


    By Sierra Instruments, Inc.

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you