thermal mass flow meter Articles

  • 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. This paper ...


    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.

  • Tech Note: Flare Gas Measurement Innovation; Retain Flow Metering Accuracy Even if Gas Composition Changes

    It’s a fact oil wells almost always produce natural gas along with the petroleum. Nine times out of ten, the excess gas (typically hydrocarbons) is flared off or simply vented as-is during upset conditions in the process. The environmental impacts of “flaring” this excess gas into our atmosphere has resulted in government regulations like 40 CFR Part 60 Subpart OOOO (also known ...


    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 signals during ...


    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.

  • Flare Gas Measurement Innovation: Retain Flow Metering Accuracy Even if Gas Composition Changes

    It’s a fact oil wells almost always produce natural gas along with the petroleum. Nine times out of ten, the excess gas (typically hydrocarbons) is flared off or simply vented as-is during upset conditions in the process. The environmental impacts of “flaring” this excess gas into our atmosphere has resulted in government regulations like 40 CFR Part 60 Subpart OOOO (also known ...


    By Sierra Instruments, Inc.

  • In-Situ Calibration - Methods & Pitfalls of Thermal Mass Flow Meter Sensor Field Validation

    Introduction Mid-to-large size facilities and campuses inevitably have hundreds of ¬ ow instruments to monitor, maintain, and repair. For a reliability engineer, ensuring that all instrumentation meets ISO 9000 or similar standards is a time-consuming responsibility. These standards mandate that precision instrumentation needs to be checked (validated) or recalibrated as often as once a year. ...


    By Sierra Instruments, Inc.

  • New Developments in Thermal Dispersion Mass Flow Meters: In-The-Field Compensation for Changes in Natural Gas Composition

    Introduction The flow of natural gas in pipelines is often complicated by changes in the composition of the gas. The method described in this paper solves the problem of variable composition via a new four-temperature mass flow sensor. The new (low sensor feeds its measurements into the algorithms of an advanced mathematical model that includes gas properties in its calculations. The method ...


    By Sierra Instruments, Inc.

  • How Does a Thermal Flowmeter Work?

    A thermal flowmeter works by measuring the total mass flow rate of a fluid flowing through a pipe or duct. In a thermal flowmeter’s simplest working configuration, fluid flows past a heated thermal sensor and a temperature sensor. As the molecules of the fluid flow past the heated thermal sensor, heat is lost to the flowing fluid. The thermal sensor cools down while the temperature sensor ...


    By Sierra Instruments, Inc.

  • Flowmeter choice affects efficiency in WWTP - Case Study

    Wastewater treatment plant operators increasingly, in today's competitive climate, have to meet mandates to fine tune their plant's performance efficiency. One way to do this and save thousands of dollars is to choose the right thermal mass flow meter for your plant. To help, we have created a short guide on choosing a flow meter for waste water treatment plant applications that was recently ...


    By Sierra Instruments, Inc.

  • Flow Calibration Best Practices

    We held a webinar on thermal mass flow meter / controller calibration best practices. Topics included: Equipment Techniques and Tips Record Keeping / Documentation If you are interested in calibrating in-house or using a third party then be sure to watch this webinar presented by Teledyne Hastings Instruments and guest speaker Jaime Shanahan of Chell Instruments, Ltd. Teledyne ...

  • 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.

  • 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 beginning of ...


    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.

  • FAQ Corner – What is turndown ratio?

    We are occasionally asked for the turndown ratios of our flow meters and flow controllers. There are varying perceptions as to what this term actually means. The turndown ratio of a Mass Flow Meter (MFM) or Mass Flow Controller (MFC) defines the usable range for which it can operate while maintaining its published accuracy. It can be expressed using the following formula: A flow meter ...

  • 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.

  • VIDEO: Mass Flow Meters for Power Plant Applications

    Generating electricity in a natural gas power plant is a complex process due to the multiple steps involved with the different types of fluids being used and optimized. Dr. John Olin, Founder of Sierra Instruments, explains how thermal mass flow meters, vortex flow meters, and ultrasonic flow meters can improve the flow energy management in power plant applications in this latest video from ...


    By Sierra Instruments, Inc.

  • Delivering mission critical for NASA – Case Study

    Early developments in the evolution of mass flow meters in the 1950’s were largely driven by the need for highly accurate readings. Over the last 50 years the demand for substantially reduced margins of error has only intensified. For the last 25 years, NASA has relied on the accuracy of Sierra's SideTrak® 830/840 thermal mass flow meters to get the right mixture of nitrogen, argon ...


    By Sierra Instruments, Inc.

  • Measuring Consumption of a Centralised Gas Supply - Case study

    Measuring local consumption of a centralised gas supply encourages users to be economical with resources, assists in leak detection and reduce overall costs. Thermal mass flow meters can easily be fitted into local gas lines so that the user knows exactly where, when and how much gas has been consumed. RED-Y Compact Features: Battery operation permits easy installation without external ...


    By iCenta Controls Ltd

  • Thermal mass flow meter for Compressed air solution - Case study

    iCenta delivered the IC-MCF Air Flow Meter complete with ancillary accessories. The IC-MCF air flow meter is indispensable for managing energy use with compressed air / nitrogen up to 12000 L/min (normal). The inexpensive mass flow meter provides precision and wide rangeability as a result of being micro-machined, integration of a micro-flow sensor and advanced channel-design technology. The ...


    By iCenta Controls Ltd

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