STN EN ISO 9300
| Označenie: | STN EN ISO 9300 |
| Platnosť: | Platná |
| Počet strán: | 134 |
| Jazyk: |
EN
|
| Listinná verzia: | 36,30€ |
| Elektronická verzia: |
a) Bez možnosti tlače, prenosu textu a obrázkov:
32,67€ b) Bez možnosti tlače, s prenosom textu a obrázkov: 36,30€ c) S možnosťou tlače, prenosu textu a obrázkov: 47,19€ |
| Slovenský názov: | Meranie prietoku plynu dýzami s kritickým prúdením (ISO 9300: 2022) |
| Anglický názov: | Measurement of gas flow by means of critical flow nozzles (ISO 9300:2022) |
| Dátum vydania: | 01. 10. 2022 |
| Dátum zrušenia: | |
| ICS: | 17.120.10 |
| Triediaci znak: | 99 6805 |
| Úroveň zapracovania: | idt EN ISO 9300:2022, idt ISO 9300:2022 |
| Vestník: | 09/22 |
| Zmeny: | |
| Nahradzujúce normy: | |
| Nahradené normy: | STN EN ISO 9300:2006-03 (99 6805) |
| Poznámka vo Vestníku: | |
| Predmet normy: | This document specifies the geometry and method of use (installation in a system and operating conditions) of critical flow nozzles (CFNs) used to determine the mass flow rate of a gas flowing through a system basically without the need to calibrate the CFN. It also gives the information necessary for calculating the flow rate and its associated uncertainty. This document is applicable to nozzles in which the gas flow accelerates to the critical velocity at the minimum flowing section, and only where there is steady flow of single-phase gas. When the critical velocity is attained in the nozzle, the mass flow rate of the gas flowing through the nozzle is the maximum possible for the existing inlet condition, while the CFN can only be used within specified limits, e.g. the CFN throat to inlet diameter ratio and Reynolds number. |
| Náhľad normy: | Náhľad normy (PDF) |