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  • BSI
    PD ISO/TR 12767:2007 Measurement of fluid flow by means of pressure differential devices. Guidelines on the effect of departure from the specifications and operating conditions given in ISO 5167
    Edition: 2007
    $442.60
    / user per year

Description of PD ISO/TR 12767:2007 2007

This Technical Report provides guidance on estimating the flowrate when using pressure differential devices constructed or operated outside the scope of ISO 5167.

Additional tolerances or corrections cannot necessarily compensate for the effects of deviating from ISO 5167 (all parts). The information is given, in the first place, to indicate the degree of care necessary in the manufacture, installation and maintenance of pressure differential devices by describing some of the effects of non-conformity to the requirements; and in the second place, to permit those users who cannot comply fully with the requirements to assess, however roughly, the magnitude and direction of the resulting error in flowrate.

Each variation dealt with is treated as though it were the only one present. Where more than one is known to exist, there may be unpredictable interactions and care has to be taken when combining the assessment of these errors. If there is a significant number of errors, means of eliminating some of them have to be considered. The variations included in this Technical Report are by no means complete and relate largely to examples with orifice plates. An example with Venturi tubes has been placed at the end of its section. There are, no doubt, many similar examples of installations not conforming to ISO 5167 (all parts) for which no comparable data have been published. Such additional information from users, manufacturers and any others may be taken into account in future revisions of this Technical Report.



Standard NumberPD ISO/TR 12767:2007
TitleMeasurement of fluid flow by means of pressure differential devices. Guidelines on the effect of departure from the specifications and operating conditions given in ISO 5167
StatusWithdrawn
Publication Date2007-09-28
Withdrawn Date2023-09-27
ReplacesBS ISO TR 12767:1998
Replaced ByPD ISO/TR 12767:2023
Identical National Standard OfISO/TR 12767:2007
DescriptorsOrifice flowmeters, Maintenance, Errors, Installation, Position, Deformation, Differential-pressure flowmeters, Diameter, Flow measurement, Thickness, Flow rates, Flow, Roughness (surface), Error correction, Mathematical calculations, Symbols, Pressure measurement (fluids), Eccentric, Layout, Tapping (threads), Pipes
ICS17.120.10 Flow in closed conduits
CommitteeCPI/30/2
ISBN978 0 580 55215 1
PublisherBSI
Pages44

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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