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UNE-EN 29104:1996

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991)

Available format(s)

Hardcopy , PDF

Superseded date

20-01-2021

Superseded by

UNE-EN ISO 20456:2021

Language(s)

Spanish, Castilian, English

Published date

23-05-1996

€88.80
Excluding VAT

Committees responsible
National foreword
Methods
Introduction
1 Scope
2 Normative references
3 Definitions
4 General testing procedure
5 Evaluation of the effect of an influence quantity
6 Tests for the evaluation of the effects of other
    influence quantities
Figures
1 Sample calibration showing distribution of test
    points
2 Typical circuit arrangements for upstream gate valve
    tests
3 Examples showing the effects of an upstream gate
    valve on three electromagnetic meters of DN 500
    (based on real data)
4 Annular or segmental obstructions used to determine
    the effects of a disturbance in the inlet flow on
    the response of the flow-meter
5 General test circuit
6 Test of the effect of a) mains frequency common-mode
    voltage (voltage applied between the earth of the
    primary and secondary devices) and b) mains
    frequency voltage between neutral and primary earth
    (voltage applied between earth and mains, if
    practicable)
7 Test of the effect of mains frequency voltage
    between earth and output terminals
8 Test of the effect of a.c. currents on earthed
    connection between primary and secondary devices
9 Test of the effect of series-mode signals at the
    supply frequency
10 Test of the effect of stray currents within the
    liquid
Annex
A Bibliography

Describes the evaluation of the performance of electromagnetic flow-meters for liquids flowing in closed conduits. It specifies a uniform procedure to verify the performance characteristics when the flow-meter is subjected to identified influence quantities and methods of representing the results of performance measurements.

Committee
CTN 82/SC 3
DocumentType
Standard
Pages
32
PublisherName
Asociacion Espanola de Normalizacion
Status
Superseded
SupersededBy

Standards Relationship
NF EN 29104 : 1993 Identical
I.S. EN 29104:1994 Identical
BS EN 29104:1993 Identical
SN EN 29104 : 1994 Identical
UNI EN 29104 : 1994 Identical
EN 29104:1993 Identical
ISO 9104:1991 Identical
NBN EN 29104 : 1993 Identical
DIN EN 29104:1993-08 Identical

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