Fan selection

General information on fan selection, system and fan characteristics

Pressure curve for connection types B, C, D

Centrifugal fans

Available power ranges and outlet positions

Centrifugal fan designs

Impeller types

Type codes 

Start-up, control, installation, material, surfaces, explosion protection tolerances

Ex zone classification

Impeller types general

Axial fans

Available power ranges

Axial fan designs 

Axial impeller types

Blade position, multi-stage

Type codes and ordering details 

Directives, start-up times, explosion protection, material and surfaces, instability range



General information on silencing

Silencer types, sound enclosures, absorption values

Silencer selection, attenuation

Pressure loss, K-factor

Splitter silencers table

Circular silencers table

Sound enclosures 


Formulas and units

Installation types, outlet duct, loss factor 

Flow loss 

Sound generation

Sound propagation free field

Sound level estimation

Drive motors 

Altitude correction

Gas mixtures


Conveying fan, dirt

Vibrations troubleshooting

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