17.120.10 封闭管道中流量的测量 标准查询与下载
共找到 601 条与 封闭管道中流量的测量 相关的标准，共 41 页
ISO/TR 3313:2018 defines pulsating flow, compares it with steady flow, indicates how it can be detected, and describes the effects it has on orifice plates, nozzles or Venturi tubes, turbine and vortex flowmeters when these devices are being used to measure fluid flow in a pipe. These particular flowmeter types feature in this document because they are amongst those types most susceptible to pulsation effects. Methods for correcting the flowmeter output signal for errors produced by these effects are described for those flowmeter types for which this is possible. When correction is not possible, measures to avoid or reduce the problem are indicated. Such measures include the installation of pulsation damping devices and/or choice of a flowmeter type which is less susceptible to pulsation effects. ISO/TR 3313:2018 applies to flow in which the pulsations are generated at a single source which is situated either upstream or downstream of the primary element of the flowmeter. Its applicability is restricted to conditions where the flow direction does not reverse in the measuring section but there is no restriction on the waveform of the flow pulsation. The recommendations within this document apply to both liquid and gas flows although with the latter the validity might be restricted to gas flows in which the density changes in the measuring section are small as indicated for the particular type of flowmeter under discussion.
Measurement of fluid flow in closed conduits — Guidelines on the effects of flow pulsations on flow-measurement instruments
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-01
- 实施
This document specifies the geometry and method of use (installation and operating conditions) of wedge meters when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit. NOTE 1 As the uncertainty of an uncalibrated wedge meter can be too large for a particular application, it could be deemed essential to calibrate the flow meter according to Clause 7. This document gives requirements for calibration which, if applied, are for use over the calibrated Reynolds number range. Clause 7 could also be useful guidance for calibration of meters of similar design but which fall outside the scope of this document. It 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 wedge meters in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. Uncalibrated wedge meters can only be used within specified limits of pipe size, roughness, beta (or wedge ratio) and Reynolds number. It is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated wedge meters in pipes whose internal diameter is less than 50 mm or more than 600 mm, or where the pipe Reynolds numbers are below 1 × 104. NOTE 2 A wedge meter has a primary element which consists of a wedge-shaped restriction of a specific geometry. Alternative designs of wedge meters are available; however, at the time of writing there is insufficient data to fully characterize these devices, and therefore these meters are calibrated in accordance with Clause 7.
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 6: Wedge meters
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-01
- 实施
This document gives guidelines for the specification, testing, inspection, installation, operation and calibration of thermal mass gas flowmeters for the metering of gases and gas mixtures. It is not applicable to measuring liquid mass flowrates using thermal mass flowmeters. This document is not applicable to hot wire and other hot film anemometers, also used in making point velocity measurements.
Measurement of fluid flow in closed conduits — Thermal mass flowmeters
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-01
- 实施
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 2: Orifice plates (ISO/DIS 5167-2:2021)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-00
- 实施
Measurement of gas flow by means of critical flow nozzles (ISO/DIS 9300:2021)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-00
- 实施
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements (ISO/DIS 5167-1:2021)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-00
- 实施
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 4: Venturi tubes (ISO/DIS 5167-4:2021)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-07-00
- 实施
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 3: Nozzles and Venturi nozzles (ISO 5167-3:2020)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-03-15
- 实施
- 2021-03-15
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full -- Part 3: Nozzles and Venturi nozzles (ISO 5167-3:2019)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-03-09
- 实施
- 2021-03-09
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 3: Nozzles and Venturi nozzles
- ICS
- 17.120.10
- CCS
- 发布
- 2021-02-18
- 实施
- 2021-02-18
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 3: Nozzles and Venturi nozzles (ISO 5167-3:2019)
- ICS
- 17.120.10
- CCS
- 发布
- 2021-01-00
- 实施
- 2021-01-01
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 4: Venturi tubes
- ICS
- 17.120.10
- CCS
- 发布
- 2020-12-29
- 实施
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 4: Venturi tubes
- ICS
- 17.120.10
- CCS
- 发布
- 2020-12-29
- 实施
Fluid flow in closed conduits — Connections for pressure signal transmissions between primary and secondary elements
- ICS
- 17.120.10
- CCS
- 发布
- 20201224
- 实施
- 20201224
Measurement of fluid flow in closed conduits－Methods using transit-time ultrasonic flowmeters
- ICS
- 17.120.10
- CCS
- 发布
- 20201224
- 实施
- 20201224
Gas ultrasonic flowmeter installation and construction requirements
- ICS
- 17.120.10
- CCS
- P94
- 发布
- 2020-12-01
- 实施
- 2020-12-15
Gas turbine flowmeter installation and construction requirements
- ICS
- 17.120.10
- CCS
- P94
- 发布
- 2020-12-01
- 实施
- 2020-12-15
Installation and construction requirements of gas Roots flowmeter
- ICS
- 17.120.10
- CCS
- P94
- 发布
- 2020-12-01
- 实施
- 2020-12-15
Installation and use requirements for combustible gas detection and alarm
- ICS
- 17.120.10
- CCS
- P94
- 发布
- 2020-12-01
- 实施
- 2020-12-15
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 3: Nozzles and Venturi nozzles (ISO 5167-3:2019)
- ICS
- 17.120.10
- CCS
- 发布
- 2020-11-30
- 实施
- 2020-11-30
