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Content DescriptionThis Standard establishes common terminology and gives guidelines for the quality, description, principle of operation, selection, installation, and flow calibration of thermal dispersion flow meters for the measurement of the mass flow rate, and to a lesser extent, the volumetric flow rate, of the flow of a fluid in a closed conduit. Multivariable versions additionally measure fluid temperature. Thermal dispersion mass flow meters are applicable to the flow of single-phase pure gases and gas mixtures of known composition and, less commonly, to single-phase liquids of known composition. This national Standard offers the most complete description heretofore of the principle of operation and other aspects of thermal dispersion mass flow meters. The text shows why these flow meters directly measure the mass flow rate of gases�¢??the quantity of interest in almost all applications, including combustion, chemical reactions, batching, and custody transfer. Chapters in this new Standard describe typical mistakes made in installing thermal dispersion mass flow meters in the process line. Also described is the need for built-in flow conditioners for in-line flow meters with upstream flow disturbances. Safety considerations during installation and maintenance are given priority throughout. All thermal dispersion mass flow meters are flow calibrated by either the manufacturer or an independent laboratory. Inaccurate flow calibration can result in erroneous mass flow readings in the field. A mandatory appendix in the Standard provides, for the first time, a detailed description of the procedures and facilities required for accurate flow calibration. Intended for engineers and other users of flow meters for gas flow measurement in such industries as energy, food, semiconductors, waste water, and the environment.Subscription InformationMADCAD.com ASME Standards subscriptions are annual and access is single concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office locations & multiple concurrencies on ASME Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASMEASME is a not-for-profit membership organization that enables collaboration, knowledge sharing, career enrichment, and skills development across all engineering disciplines, toward a goal of helping the global engineering community develop solutions to benefit lives and livelihoods. Founded in 1880 by a small group of leading industrialists, ASME has grown through the decades to include more than 130,000 members in 158 countries. Thirty-thousand of these members are students. From college students and early-career engineers to project managers, corporate executives, researchers and academic leaders, ASME's members are as diverse as the engineering community itself. ASME serves this wide-ranging technical community through quality programs in continuing education, training and professional development, codes and standards, research, conferences and publications, government relations and other forms of outreach. |
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