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Norm
ÖVE/ÖNORM EN 60534-8-2
Ausgabedatum: 2012 08 01
Industrial-process control valves - Part 8-2: Noise considerations - Laboratory measurement of noise generated by hydrodynamic flow through control valves (IEC 60534-8-2:2011) (english version)
This part of IEC 60534-8 includes the method for measuring the sound pressure level due to
liquid flow through a control valve and the method for determining the charact...
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Herausgeber:
Austrian Standards International
Format:
Digital | 32 Seiten
Sprache:
Englisch
This part of IEC 60534-8 includes the method for measuring the sound pressure level due to
liquid flow through a control valve and the method for determining the characteristic increase
of noise due to the onset of cavitation. It also defines the equipment, methods and procedures
for the laboratory measurement of the airborne sound needed to determine these
characteristics.
Two methods are provided for testing the noise generating characteristics of control valves.
The first is a uniform method of measuring the radiated noise from the valve and the
associated test piping including fixed flow restrictions through which the test fluid (water) is
passing (see Note 1). The noise criteria are expressed by determining the sound pressure
level of the valve under consideration.
The second is a procedure for measuring the sound pressure levels within pipe systems
upstream and downstream of the valve under fixed operating conditions. Since inaccuracies
due to the pipe transmission are eliminated, this method shall be preferred for evaluation of
the acoustical characteristic of valves.
The noise characteristics to be determined are useful:
a) to determine acoustical characteristics of valves and valve assemblies and the
characteristic pressure ratio factor xFz of a control valve;
b) to predict valve noise for given process conditions;
c) to compare the performance of different valves and various measuring results;
d) to plan measures for increasing service life and noise abatement;
e) to determine possible adverse effects on ultra-sonic flow meter measurements;
f) to enable proper sizing of sound absorbers.
ÖVE/ÖNORM EN 60534-8-2
2012 08 01
Industrial-process control valves - Part 8-2: Noise considerations - Laboratory measurement of noise...
Norm
↖
ÖVE EN 60534-8-2
1993 08
Industrial-process control valves - Part 8: Noise considerations - Section 2: Laboratory measurement...
Technische Regel
Norm
ÖNORM EN ISO 3744
Ausgabedatum :
2011 03 01
Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Geräuschquellen aus Schalldruckmessungen - Hüllflächenverfahren der Genauigkeitsklasse 2 für ein im Wesentlichen freies Schallfeld über einer reflektierenden Ebene (ISO 3744:2010)
Norm
ÖNORM EN ISO 3745
Ausgabedatum :
2012 06 01
Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Geräuschquellen aus Schalldruckmessungen - Verfahren der Genauigkeitsklasse 1 für reflexionsarme Räume und Halbräume (ISO 3745:2012)
Norm
ISO 3744:1994
Ausgabedatum :
1994 05 05
Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane
Norm
ISO 3745:2003
Ausgabedatum :
2003 11 25
Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision methods for anechoic and hemi-anechoic rooms