ISO 5167-3 PDF

This part of ISO also provides background information for calculating the flowrate and is applicable in conjunction with the requirements given in ISO This part of ISO is applicable to nozzles and Venturi nozzles in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. In addition, each of the devices can only be used within specified limits of pipe size and Reynolds number. It is not applicable to the measurement of pulsating flow.

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This part of ISO also provides background information for calculating the flowrate and is applicable in conjunction with the requirements given in ISO This part of ISO is applicable to nozzles and Venturi nozzles in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase.

In addition, each of the devices can only be used within specified limits of pipe size and Reynolds number. It is not applicable to the measurement of pulsating flow. It does not cover the use of nozzles and Venturi nozzles in pipe sizes less than 50 mm or more than mm, or where the pipe Reynolds numbers are below 10 This part of ISO deals with a two types of standard nozzles: 1 the ISA5 nozzle; 2 the long radius nozzle6 ; b the Venturi nozzle.

The two types of standard nozzle are fundamentally different and are described separately in this part of ISO The Venturi nozzle has the same upstream face as the ISA nozzle, but has a divergent section and, therefore, a different location for the downstream pressure tappings, and is described separately.

This design has a lower pressure loss than a similar nozzle. For both of these nozzles and for the Venturi nozzle direct calibration experiments have been made, sufficient in number, spread and quality to enable coherent systems of application to be based on their results and coefficients to be given with certain predictable limits of uncertainty.

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ISO 5167-3

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements Executive summary General principles for methods of measurement and computation of the flow rate of fluid flowing in circular cross-section conduits running full. Abstract This International Standard, a part of the ISO series, defines terms and symbols and establishes the general principles for methods of measurement and computation of the flow rate of fluid flowing in a conduit by means of pressure differential devices orifice plates, nozzles and Venturi tubes when they are inserted into a circular cross-section conduit running full. This part of ISO also specifies the general requirements for methods of measurement, installation and determination of the uncertainty of the measurement of flow rate. It also defines the general specified limits of pipe size and Reynolds number for which these pressure differential devices are to be used.

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ISO 5167-3 PDF

Nikojind Therefore this version remains current. You may be interested in: The pressure drop can be and correlated with flow rate. They offer significant cost benefits over other types of flowmeter, especially in larger line sizes, and have proved to be rugged, effective and reliable over many years. For both of these nozzles and for the Venturi nozzle direct calibration experiments have been made, sufficient in number, spread and quality to enable coherent systems of application to be based on their results and coefficients to be given with certain predictable limits of uncertainty.

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ISO 5167-3:2003

The Green document status indicator indicates that the document is: a current in the Construction Information Service and b the latest version - ie it does not have any other documents that replace or amend it and is promoted as a current document by the publisher. The Amber document status indicator indicates that some caution is needed when using this document - it is either: a current in the Construction Information Service but has a document or documents that replace or amend it, so please look at the "Newer Versions" tab or b not in the Construction Information Service but with another reason why it may be relevant to our customers such as being cited in NBS or in the Building Regulations Approved Documents. Again there may be more recent versions of the document. The Red document status indicator indicates that the document is an old version The document has likely been withdrawn by the publisher, also the meta data presented here may be out of date as it is no longer being maintained by the editorial teams at NBS.

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Pipe Flow Measurement - Flow Nozzles

ISO also provides background information for calculating the flow-rate and is applicable in conjunction with the requirements given in ISO ISO is applicable to nozzles and Venturi nozzles in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. In addition, each of the devices can only be used within specified limits of pipe size and Reynolds number. It is not applicable to the measurement of pulsating flow. It does not cover the use of nozzles and Venturi nozzles in pipe sizes less than 50 mm or more than mm, or for pipe Reynolds numbers below 10 ISO deals with two types of standard nozzles, the ISA nozzle and the long radius nozzle, as well as the Venturi nozzle. The two types of standard nozzle are fundamentally different and are described separately in ISO

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