Critical frequency estimates for thermowells covered under ASME PTC 19.3 /

The ASME Performance Test Code, PTC 19.3, establishes the velocity ratings of thermowells in terms of a simplified resonant frequency estimate. The theoretical basis for this is examined and compared with discrete element methods. It is found that the code calculation fails to guarantee conservative...

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Bibliographic Details
Main Author:	Bartran, David S.
Corporate Author:	Chemical Science and Technology Laboratory (U.S.)
Other Authors:	Ripple, Dean C.
Format:	Government Document eBook
Language:	English
Published:	[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology, [2007]
Series:	NISTIR ; 7407.
Subjects:	Temperature measuring instruments.
Online Access:	https://purl.fdlp.gov/GPO/gpo105317

Description
Summary:	The ASME Performance Test Code, PTC 19.3, establishes the velocity ratings of thermowells in terms of a simplified resonant frequency estimate. The theoretical basis for this is examined and compared with discrete element methods. It is found that the code calculation fails to guarantee conservative velocity ratings for shorter thermowells. The implications of this finding and possible remedies are discussed.
Item Description:	"March 2007." Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes. Title from page [1], viewed April 5, 2007. Electronic resource.
Physical Description:	1 online resource (7 pages).
Bibliography:	Includes bibliographical references (page 7).