The pressure-volumetric flow curves of the individual fans are measured in a chamber test stand according to DIN 24163., see illustration

 

Messstrecke

 

 

 

 

 

 

 

 

The characteristic diagram shows the pressure increase ptotal in Pascal as a function of the volume flow V in m³/h. The sound measurement was made at a distance of 7m from the fan on the outlet side.

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