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API INVENTORIES OF GAS - INVENTORIES OF NATURAL GAS LIQUIDS AND LIQUIFIED REFINERY GASES
February 1, 2019 - API
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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...

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...

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...

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...

ISO DIS 21903 - Refrigerated Hydrocarbon Fluids - Dynamic Measurement - Guidance for the calibration, installation and use of flow meters for LNG and other refrigerated hydrocarbon fluids
December 3, 2018 - ISO

This document describes the metrological and technical requirements for flowmeters intended to be used in the dynamic measurement of Liquefied Natural Gas (LNG) and other refrigerated hydrocarbon fluids. This document sets the best practice for the proper selection and installation of...

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