Industrial fans. Determination of fan sound power levels under standardized laboratory conditions - Enveloping surface methods Ingestion-build-251241 ISO 20570 provides measurements and

ISO 20570 provides measurements and test methods on Visual inspection

Further discussion is also provided on certain aspects of PRP processing techniques

iii) - 20 °C

the procedures for extraction

Industrial fans. Determination of fan sound power levels under standardized laboratory conditions - Enveloping surface methods Ingestion-build-251241 ISO 20570 provides measurements and1 Scope This part of ISO 13347 applies to industrial fans as defined in ISO 5801 and ISO 13349. It is limited to the determination of airborne sound emission for the specified set ups. Vibration is not measured, nor is the sensitivity of airborne sound emission to vibration effects determined. The sizes of fan which can be tested in accordance with this part of ISO 13347 are limited only by the practical aspects of the test set up. Dimensional