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001 ocm04070432;

003 OCoLC;

005 20221228134707.0;

008 780720s1977 coua b f000 0 eng d;

019 a| 181643673a| 897958654;

037 a| 003-003-01864-3;

037 b| 20402;

049 a| ERE#;

074 a| 0249-A;

086 0 a| C 13.46:698;

100 1 a| Siegwarth, J. D.=| ^A604373;

245 10 a| Cryogenic fluids, density reference system :b| provisional accuracy statement /c| J.D. Siegwarth, B.A. Younglove, and J.F. LaBrecque.;

264 1 a| Boulder, Colo. :b| Dept. of Commerce, National Bureau of Standards,c| 1977.;

300 a| iv, 24 pages, 1 unnumbered page :b| illustrations ;c| 27 cm;

336 a| textb| txt2| rdacontent;

337 a| unmediatedb| n2| rdamedia;

338 a| volumeb| nc2| rdacarrier;

490 1 a| NBS technical note ;v| 698;

500 a| Prepared for the American Gas Association, Inc., by Cryogenic Division, and Applied Mathematics Division, of Institute for Basic Standards of NBS.;

500 a| Issued November 1977.;

504 a| Includes bibliographical references.;

520 a| The density reference system of the Cryogenics Division of the National Bureau of Standards is described. This system is used in making density measurements of cryogenic liquids. The methods of computation and the accuracy to which the density of the liquid can be measured are discussed in detail. At this time the estimate of sample standard deviation for a single density measurement made using this system is 0.016% (at 422.63 kg/cu m). Using three times this standard deviation as a limit for random error and using 0.028% as the bound for known sources of possible systematic error, the uncertainty of a single determination with this system is + or - 0.076%. This statement of accuracy applies for the density range 400 to 480 kg/cu m, pressures from 0 to 3 bar, and temperatures from 110 K to 125 K. Because of the densimeter design, this accuracy statement is expected to apply to the density range from 400 to 1000 kg/cu m and to the temperature range of 77 to 300 K at least, and to pressures of 7 bar, though these ranges of application have yet to be verified.;

500 a| GPO Historic Shelflist Project- publication not in hand.;

500 a| GPO Cataloging Record Distribution Program (CRDP).;

650 0 a| Fluids.=| ^A34419;

650 0 a| Low temperatures.=| ^A44359;

650 0 a| Specific gravity.=| ^A253706;

650 7 a| Fluids.2| fast0| (OCoLC)fst00928067;

650 7 a| Low temperatures.2| fast0| (OCoLC)fst01003163;

650 7 a| Specific gravity.2| fast0| (OCoLC)fst01129018;

700 1 a| Younglove, Ben,e| author.=| ^A1058745;

700 1 a| LaBrecque, J. F.e| author.=| ^A604374;

710 2 a| Institute for Basic Standards (U.S.).b| Applied Mathematics Division.=| ^A598007;

710 2 a| Institute for Basic Standards (U.S.).b| Cryogenics Division.=| ^A602222;

710 2 a| American Gas Association.=| ^A60322;

830 0 a| NBS technical note ;v| 698.=| ^A4336;

949 a| C 13.46:698w| sudoch| joyner38;

596 a| 1;

998 a| 1008825;

999 a| C 13.46:698w| SUDOCc| 1i| 30372012777113d| 9/8/2005l| JDOSm| JOYNERr| Ys| Yt| JDOSBKu| 9/8/2005x| BOOKz| JFEDDOCSo| .STAFF. 0;

Cryogenic fluids, density reference system : provisional accuracy statement / J.D. Siegwarth, B.A. Younglove, and J.F. LaBrecque.

Author/creator	Siegwarth, J. D.
Format	Book
Publication	Boulder, Colo. : Dept. of Commerce, National Bureau of Standards, 1977.
Description	iv, 24 pages, 1 unnumbered page : illustrations ; 27 cm
Subjects	Fluids. Low temperatures. Specific gravity.

Other author/creator	Younglove, Ben, author.
Other author/creator	LaBrecque, J. F. author.
Other author/creator	Institute for Basic Standards (U.S.). Applied Mathematics Division.
Other author/creator	Institute for Basic Standards (U.S.). Cryogenics Division.
Other author/creator	American Gas Association.
Series	NBS technical note ; 698 NBS technical note ; 698. ^A4336
Abstract	The density reference system of the Cryogenics Division of the National Bureau of Standards is described. This system is used in making density measurements of cryogenic liquids. The methods of computation and the accuracy to which the density of the liquid can be measured are discussed in detail. At this time the estimate of sample standard deviation for a single density measurement made using this system is 0.016% (at 422.63 kg/cu m). Using three times this standard deviation as a limit for random error and using 0.028% as the bound for known sources of possible systematic error, the uncertainty of a single determination with this system is + or - 0.076%. This statement of accuracy applies for the density range 400 to 480 kg/cu m, pressures from 0 to 3 bar, and temperatures from 110 K to 125 K. Because of the densimeter design, this accuracy statement is expected to apply to the density range from 400 to 1000 kg/cu m and to the temperature range of 77 to 300 K at least, and to pressures of 7 bar, though these ranges of application have yet to be verified.
General note	Prepared for the American Gas Association, Inc., by Cryogenic Division, and Applied Mathematics Division, of Institute for Basic Standards of NBS.
General note	Issued November 1977.
General note	GPO Historic Shelflist Project- publication not in hand.
General note	GPO Cataloging Record Distribution Program (CRDP).
Bibliography note	Includes bibliographical references.
GPO item number	0249-A
Govt. docs number	C 13.46:698
Stock number	003-003-01864-3
Stock number	20402

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Cryogenic fluids, density reference system : provisional accuracy statement / J.D. Siegwarth, B.A. Younglove, and J.F. LaBrecque.

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