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ISO 5167-6 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 6: Wedge meters
February 1, 2019 - ISO

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...

DS/ISO 14511 - Measurement of fluid flow in closed conduits – Thermal mass flowmeters
January 14, 2019 - DS

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...

ISO DIS 21501-3 - Determination of particle size distribution - Single particle light interaction methods - Part 3: Light extinction liquid-borne particle counter
December 28, 2018 - ISO

This document describes a calibration and verification method for a light extinction liquid-borne particle counter (LELPC), which is used to measure the size and particle number concentration of particles suspended in liquid. The light extinction method described in this document is based on...

ISO 14511 - Measurement of Fluid Flow in Closed Conduits - Thermal Mass Flowmeters
January 1, 2019 - ISO

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...

DIN EN ISO 6145-6 - Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices (ISO 6145-6:2017)
December 1, 2017 - DIN

This document specifies a method for the dynamic preparation of calibration gas mixtures containing at least two gases (usually one of them is a complementary gas) from pure gases or gas pre-mixtures using critical flow orifices systems. The method applies principally to the...

DS/EN ISO 15681-2 - Water quality – Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) – Part 2: Method by continuous flow analysis (CFA) (ISO 15681-2:2018)
December 10, 2018 - DS

This document specifies continuous flow analysis (CFA) methods for the determination of orthophosphate in the mass concentration range from 0,01 mg/l to 1,00 mg/l P, and total phosphorus in the mass concentration range from 0,10 mg/l to 10,0 mg/l P. The method includes the digestion of...

ISO DIS 21501-2 - Determination of particle size distribution - Single particle light interaction methods - Part 2: Light scattering liquid-borne particle counter
December 28, 2018 - ISO

This document describes a calibration and verification method for a light scattering liquid-borne particle counter (LSLPC), which is used to measure the size and particle number concentration of particles suspended in liquid. The light scattering method described in this document is based on...

ISO 6145-6 - Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices
July 1, 2017 - ISO

This document specifies a method for the dynamic preparation of calibration gas mixtures containing at least two gases (usually one of them is a complementary gas) from pure gases or gas pre-mixtures using critical flow orifices systems. The method applies principally to the...

ISO 15681-2 - Water quality - Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) - Part 2: Method by continuous flow analysis (CFA)
October 1, 2018 - ISO

This document specifies continuous flow analysis (CFA) methods for the determination of orthophosphate in the mass concentration range from 0,01 mg/l to 1,00 mg/l P, and total phosphorus in the mass concentration range from 0,10 mg/l to 10,0 mg/l P. The method includes the digestion of...

ASME STP-TS-084 - Orifice Flow Coefficient Equation Comparison
June 27, 2018 - ASME

FOREWORD This report analyzes four flange tap equations and three corner tap equations for the discharge coefficient for orifice plates. All of the equations analyzed are functions of Beta Ratios, Reynolds Number, and Line Size, and all data points were evaluated against each of the seven orifice...

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