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분야 | ISO/TC 30/SC 2 : Pressure differential devices |
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적용범위 | This document specifies the geometry and method of use (installation and operating conditions) of Venturi tubes[1] when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit. This document also provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ISO 5167-1. This document is applicable only to Venturi tubes in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. In addition, Venturi tubes can only be used uncalibrated in accordance with this standard within specified limits of pipe size, roughness, diameter ratio and Reynolds number, or alternatively they can be used across their calibrated range. This document is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated Venturi tubes in pipes sized less than 50 mm or more than 1 200 mm, or where the pipe Reynolds numbers are below 2 × 105. This document deals with the three types of classical Venturi tubes: a) “as cast”; b) machined; c) fabricated (also known as “rough-welded sheet-iron”). A Venturi tube consists of a convergent inlet connected to a cylindrical throat which is in turn connected to a conical expanding section called the divergent section (or alternatively the diffuser). Venturi nozzles (and other nozzles) are dealt with in ISO 5167-3. NOTE In the USA the classical Venturi tube is sometimes called the Herschel Venturi tube.
[1] In the USA the classical Venturi tube is sometimes called the Herschel Venturi tube. |
국제분류(ICS)코드 | 17.120.10 : 폐쇄관내 유동 |
페이지수 | 26 |
Edition | 2 |
No. | 표준번호 | 표준명 | 발행일 | 상태 |
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1 | ISO 5167-4:2022 | Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 4: Venturi tubes | 2022-06-16 | 표준 |
2 | ISO 5167-4:2003 | Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 4: Venturi tubes | 2003-02-24 | 구판 |
ISO 5167-1:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 1: General principles and requirements 상세보기
ISO 5167-2:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 2: Orifice plates 상세보기
ISO 5167-5:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 5: Cone meters 상세보기
ISO 5167-6:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 6: Wedge meters 상세보기
ISO 5167-3:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 3: Nozzles and Venturi nozzles 상세보기
ISO 5167-3:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 3: Nozzles and Venturi nozzles 상세보기
ISO 5167-1:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 1: General principles and requirements 상세보기
ISO 5167-2:2022 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 2: Orifice plates 상세보기
ASME B16.5-2020 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard 상세보기
ASME B16.25-2017 - Buttwelding Ends 상세보기
IEC TS 63134:2020 - Active assisted living (AAL) use cases 상세보기
IEC 60034-5:2020 RLV - Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification 상세보기
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KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스 상세보기