flow sensor Articles
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Desired characteristics of a thermal mass flow sensor - Part 2 of 2
This is part two of a two-part blog on Thermal Mass Flow sensors. In part one, we described the desired characteristics of a thermal mass flow sensor. In part two, we will discuss the operation of the 300 series flow sensor (Patent #6,125,695) and how its design addresses the desired traits. In our previous blog, we showed a cutaway of a thermal mass flow meter. Now let’s take an ...
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Desired Characteristics of a Thermal Mass Flow Sensor - Part 1 of 2
This is part 1 of a 2 part blog on Thermal Mass Flow Sensor. We will describe the desired characteristics of a thermal mass sensor in Part 1 and Part 2 will discuss the operation of the 300 Series flow sensor (Patent #6,125,695) from Teledyne Hastings. A thermal mass flow meter consists of the following: Electronic Circuit Card Flow Sensor Bypass Shunt Base A cutaway is shown in the ...
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Project - GasPol - A system for weighing and controlling of gas loading into road tankers and rail tankers
Need Standardisation of weighing software in every company branch having truck and rail weighbridges (static and dynamic) Close connection with the Microsoft Dynamic NAV system Close connection to the tanker identification system by means of long-range RFID tags Connection to mass air-flow sensors Connection to the video monitoring system Introduction of mechanisms for data entry control ...
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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 ...
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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 ...
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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 ...
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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 ...
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Why Measure Flue Gas Velocity?
Many industrial processes release flue gases to the atmosphere. Under European Directives the majority of those are classed as emission sources and therefore require continuous emission monitoring. European standards for monitoring pollutants and flow for CEMS (Continuous Emission Monitoring Systems) are already in place and other countries usually follow them to some extent. The CODEL VCEM5100 ...
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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. ...
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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 ...
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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 ...
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How Does a Water Flow Meter Work?
A flow meter works by measuring the amount of a gas, liquid or steam that passes through or around the flow meter sensors. While flow meter sensors work in many different ways, the end goal is the same: Deliver the most accurate and repeatable flow measurements for the specific application, whether for general research, process control or semiconductor processing. Flow meters measure either mass ...
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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 ...
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Bunker disputes avoided by using coriolis meters - Case study
Coriolis meters are being used in the shipping industry to give true volume of fuel being delivered and to avoid bunker disputes due to aeration of fuel, known as the ‘Cappuccino’ effect MORE INFORMATION Fuel suppliers sometimes introduce air intentionally into marine fuel during the pumping of bunkers to the ship, meaning that the quantity of fuel being delivered for a given volume ...
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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 of the ...
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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. ...
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Gas Mass Flow Metering - Innovations Promise More Economical Choices- White Paper
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 of the ...
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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. ...
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Increase biogas production, aeration basin efficiency with the right flow meter
In our competitive economic climate, many plant operators have a mandate to tune their plant’s performance by efficiently using biogas in cogeneration processes and increasing aeration basin efficiency, both of which can save thousands of dollars in the critical secondary stages of wastewater treatment. In many cases, these facilities are retrofitting with new flow measurement ...
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An Analytical Detector Comparison for TOC Analysis in Cleaning Validation and Water Purification Applications
Determining the best TOC analyzer for cleaning validation and purified water applications often results in a comparison of the two commonly used detection techniques: NDIR detection and membrane conductivity. In this study, an analytical comparison of these detection techniques was conducted using several different matrices and analytes in a pharmaceutical application. Background Conductivity ...
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