STN EN ISO 9300
| Name: | STN EN ISO 9300 |
| Validity: | Valid |
| Number of pages: | 134 |
| Language: |
EN
|
| Paper: | 36,30€ |
| Electronic version |
a) Only read (without ability to print and copy)
32,67€ b) Without ability to print, with ability to copy (printscreen) 36,30€ c) With ability to print and copy (printscreen) 47,19€ |
| Slovak title | Meranie prietoku plynu dýzami s kritickým prúdením (ISO 9300: 2022) |
| English title | Measurement of gas flow by means of critical flow nozzles (ISO 9300:2022) |
| Release Date: | 01. 10. 2022 |
| Date of withdrawal: | |
| ICS: | 17.120.10 |
| Sorting character/National clasification code | 99 6805 |
| Level of incorporation: | idt EN ISO 9300:2022, idt ISO 9300:2022 |
| Official Journal | 09/22 |
| Amendments | |
| Replaced by: | |
| Repleces: | STN EN ISO 9300:2006-03 (99 6805) |
| Note in Official Journal: | |
| Subject of the standard: | 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. |
| Preview: | Náhľad normy (PDF) |