How can I determine noise levels in orifice flow meters?

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SUMMARY

The discussion centers on determining noise levels in orifice flow meters, specifically in decibels. The user seeks methods or equations for this purpose, referencing the lack of a current standard for noise levels in orifice meters. Notably, software packages conforming to IEC 534-8-3 and IEC 534-8-4 exist for calculating noise levels, focusing on aerodynamic and hydrodynamic noise. A recommendation is made to consult the "ISA Handbook of Control Valves," particularly Chapter 7, which provides relevant equations applicable to orifice flow meters.

PREREQUISITES
  • Understanding of orifice flow meter principles
  • Familiarity with IEC 534-8-3 and IEC 534-8-4 standards
  • Basic knowledge of fluid dynamics
  • Competence in acoustics principles
NEXT STEPS
  • Research software packages for calculating noise levels in orifice meters
  • Study the "ISA Handbook of Control Valves" for control valve noise equations
  • Explore aerodynamic and hydrodynamic noise prediction methods
  • Investigate industry standards related to flow meter noise assessment
USEFUL FOR

Engineers, flow meter technicians, and acoustics specialists involved in the design and analysis of orifice flow meters and their noise characteristics.

DaiG
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My employer has asked me to derive a method or equation for determining noise (in decibels) in orifice flow meters. I was wondering if anyone has any suggestions that could help me get on my way? I've been looking at basic principles of aerodynamic and hydrodynamic noise predicitions. As far as I'm aware there isn't a current standard in place for noise levels in orifice meters but several large companies have generated software packages to calculate noise levels in orifice meters which conform to IEC 534-8-3 and IEC 534-8-4 which details aerodynamic and hydrodynamic noise in throttling valves. My knowledge of Fluid flow is competent/advanced but my knowledge of acoustics is average at best. Anyone with any suggestion? Thanks.
 
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Ask your employer to purchase, "ISA Handbook of Control Valves." Chapter 7 discusses control valve noise and has equations. You should be able to figure out how to apply them to an orifice.
 

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