et

rõhukadu

1 substantive

Terminological databases

EKI terminibaas Esterm

ID 719198 Last modified 30.12.2004
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Domain test technology
pressure loss
Usage examples
  • If there is a risk that the supply conditions might lead to the meter becoming overloaded, a flow-limiting device shall be provided. This device shall be placed downstream of the meter if it causes a pressure loss.
perte de charge
Druckabfall
painehäviö

Engineering, Manufacturing and Construction

Metroloogia terminibaas

ID 573746 Last modified 14.08.2026
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Domain Standardisation - Metrologymeasuring procedures
rõhulang preferred
rõhulangus
rõhukadu
survelang
survelangus
survekadu
Δp
pressure loss preferred
pressure drop
pressure gradient
Δp
head loss
baric gradient
  • antud voomahu juures veearvesti olemasolust põhjustatud vältimatu rõhu vähenemine torus
  • rõhu erinevus voo kahe asukoha vahel
  • irrecoverable decrease in pressure, at a given flow rate, caused by the presence of the water meter in the pipeline
  • non-recoverable pressure drop caused by the presence of the meter in the pipeline
  • non-recoverable pressure drop caused by the presence of the turbine meter in the conduit
  • difference of pressure between two positions in the flow path
  • irrecoverable pressure loss caused by the presence of a primary device in the conduit
rõhulang preferred
Usage examples
  • Andmed rõhulangu kohta veearvesti tüübi ja mõõtmete või vajaduse korral arvesti paketi kohta esitab tootja.
rõhulangus
rõhukadu
survelang
survelangus
survekadu
Δp symbol
pressure loss preferred
Usage examples
  • Pressure loss data for the meter type and size or meter package, as appropriate, shall be provided by the manufacturer.
pressure drop
Usage examples
  • The pressure drop is expressed in pressure units.
pressure gradient
Δp symbol
head loss
baric gradient
hydraulic gradient variant

Metroloogia terminibaas

ID 572863 Last modified 28.05.2026
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Domain metrologymeasuring instrumentsmeasuring procedures
rõhu neeldumine preferred
pressure absorption preferred
  • töötava mõõturi/arvesti sisend- ja väljundühenduses mõõtmise käigus saadud rõhkude vahe
  • difference between the pressure measured at the inlet and outlet connections of the meter whilst the meter is operating
rõhu neeldumine preferred
Usage examples
  • Arvesti keskmine rõhu neeldumine vähemalt ühe tsüklilise ruumala ulatuses õhuvoo korral tihedusega 1,2 kgm-3 ja voomahul, mis on võrdne Qmax-iga, ei tohi ületada standardis EN 1359 esitatud väärtust.
  • Rõhu neeldumise protsess põhineb nähtusel, et kõrge rõhu all kipuvad gaasid jääma tahketele pindadele, st mida kõrgem on rõhk, seda rohkem gaasi vabanemisel rõhk neeldub.
rõhukadu
pressure absorption preferred
Usage examples
  • The mean pressure absorption of a meter over at least one cyclic volume, with a flow of air with a density of 1,2 kgm-3, at flow rate equal to Qmax shall not exceed the value given in EN 1359.

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