ISO 5167-2 PDF

Part 2 of ISO covers the most widely used differential pressure device of all, the orifice plate. It specifies the geometry and methods of use as well as performance coefficients and uncertainty expectations in detail. The orifice plate is an extremely well understood differential pressure generator and has been documented for over hundreds of years. The general shape, flatness, surface finish, bore and square edge requirements of an orifice plate are described in detail. The limitations of plates are listed along with corresponding uncertainty expectations for uncalibrated devices with equations to predict permanent pressure loss.

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Part 2 of ISO covers the most widely used differential pressure device of all, the orifice plate. It specifies the geometry and methods of use as well as performance coefficients and uncertainty expectations in detail.

The orifice plate is an extremely well understood differential pressure generator and has been documented for over hundreds of years. The general shape, flatness, surface finish, bore and square edge requirements of an orifice plate are described in detail. The limitations of plates are listed along with corresponding uncertainty expectations for uncalibrated devices with equations to predict permanent pressure loss.

An extensive section is dedicated to the installation requirements of orifice plates with detailed information on the upstream and downstream straight lengths required for differing inlet piping configurations which have been generated from empirical data.

Flow conditioners and flow straightener designs are considered and demonstrate, with worked examples, how straight lengths can be reduced when installed as part of the meter assembly. The standard is due for ISO systematic review in By continuing to use the site, you agree to our Privacy and Cookie Policy. Tag Differential Pressure. Categories : DP Flow Blog. Tag : Differential Pressure. Tweets by SolartronISA. June 2. May 1.

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BS EN ISO 5167-2

Latest version of document. Specifies the geometry and method of use installation and operating conditions of orifice plates when they are inserted in a conduit running full to determine the flowrate of the fluid flowing in the conduit. Also provides background information for calculating the flowrate and is applicable in conjunction with the requirements given in ISO Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards. Website: www. Sample Specification Download sample specifications and see what's possible with NBS Chorus Case studies Find out how our customers use our software and services Authors Meet some of our specialists and contributors Training Interactive training courses and educational material, to help you get the most from NBS software tools Downloads and updates Download the latest versions of our software and find out about the latest updates to content About NBS Our Vision, Mission and Values Newsroom All the latest NBS and industry news and stories. Orifice plates.

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ISO 5167-2:2003

ISO specifies the geometry and method of use installation and operating conditions of orifice plates when they are inserted in a conduit running full to determine the flow-rate of the fluid flowing in the conduit. It also provides background information for calculating the flow-rate and is applicable in conjunction with the requirements given in ISO Other pressure tappings such as vena contracta and pipe tappings have been used with orifice plates but are not covered by ISO ISO is applicable only to a flow which remains subsonic throughout the measuring section and where the fluid can be considered as single phase.

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BS EN ISO 5167-2:2003

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ISO 5167 – Part 2 Orifice Plates

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