Gravimetric flow standard in the vacuum and hermetic modes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F18%3AN0000076" target="_blank" >RIV/00177016:_____/18:N0000076 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/18:10386623
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1361-6501/aad1e2/meta" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6501/aad1e2/meta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6501/aad1e2" target="_blank" >10.1088/1361-6501/aad1e2</a>
Alternative languages
Result language
angličtina
Original language name
Gravimetric flow standard in the vacuum and hermetic modes
Original language description
The Czech national standard of low gas flow is based on dynamic gravimetry principle, defining the flow rate as the mass loss of gas from a pressure bottle which is continuously weighed. This weighing is performed in an ambient atmosphere which brings two problems. First, the buoyancy corrections are the main and unavoidable source of uncertainty. Second, there can occur a condensation of the water vapour on the pressure bottle due to its cooling below dew point for the higher flow rates. A weighing in a hermetically closed atmosphere suppresses the problematic buoyancy effects. A weighing in vacuum does the same and also eliminates any danger of water condensation. The paper describes the hermetic and vacuum mode modifications together with the relevant uncertainty analyses.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20303 - Thermodynamics
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Measurement Science and Technology
ISSN
09570233
e-ISSN
13616501
Volume of the periodical
29
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000441305300002
EID of the result in the Scopus database
2-s2.0-85051741600