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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

NF E51-006-3 ; NF ISO 13347-3:2004-11-01
Industrial fans - Determination of fan sound power levels under standardized laboratory conditions - Part 3: enveloping surface methods

Title (German)

Industrieventilatoren - Bestimmung der Schallleistungspegel unter genormten Laborbedingungen - Teil 3: Hüllflächenverfahren

Edition 2004-11-01

Original language French

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Terminology

Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

NF E51-006-3 ; NF ISO 13347-3:2004-11-01 Industrial fans - Determination of fan sound power levels under standardized laboratory conditions - Part 3: enveloping surface methods

Want to learn more?

NF E51-006-3 ; NF ISO 13347-3:2004-11-01
Industrial fans - Determination of fan sound power levels under standardized laboratory conditions - Part 3: enveloping surface methods