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มิถุนายน 24, 2022
MK
มิถุนายน 24, 2022

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SPLITTER WITH HIGH INSERTION LOSS IN THE LOW FREQUENCY RANGE

Sound attenuator splitters with resonating panels, ready to be used in ventilation and air conditioning systems

  • Attenuation effect due to resonance
  • Energy efficient due to aerodynamically formed frame (bullnose radius 20 mm)
  • Acoustic data measured to EN ISO 7235
  • Sound absorbing material is biosoluble and hence hygienically safe
  • The sound absorbing material is non-combustible, to EN 13501, fire rating class A1
  • For use in areas with potentially explosive atmospheres (according to EC Directive 2014/34/EU (ATEX)), zones 1, 2, and zones 21 and 22 (outside) according to EC Directive 1999/92/EC
  • Operating temperature 100 °C max., up to 300 °C for a limited period of time

Optional equipment and accessories

  • Stainless and PUR-coated constructions on request
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General Information

Application

  • Sound attenuator splitters with resonating panels are used for the reduction of fan and air-regenerated noise in ventilation and air conditioning systems
  • Attenuation effect due to resonance
  • Attenuation particularly in the low frequency range of critical fan noise
  • Hygiene tested and compliant with VDI 6022
  • For use in areas with potentially explosive atmospheres (ATEX), zones 1, 2, 21 and 22 (outside) according to EC Directive 1999/92/EC.

Special features

  • Resonating panels ensure increased insertion loss in the frequency range of critical fan noise
  • Energy-efficient due to aerodynamically formed splitter frame
    • Up to 30 % lower differential pressure
  • Hygiene tested and compliant with VDI 6022

Nominal sizes

  • H: 150 – 1800 mm
  • L: 500, 750, 1000, 1250, 1500 mm
  • Intermediate sizes of H are possible: 150 – 1800 mm in increments of 1 mm
  • Intermediate lengths (L) are possible: 150 – 1500 mm in increments of 1 mm
  • H + L 600 mm min., 3300 mm max., 80 kg max.
  • Height and length subdivided: not available

Variants

Principal attenuation range

  • A: 250/125 Hz
  • C: 125/63 Hz

Construction

Materials and surfaces

  • No entry: Galvanised steel 1.0917
  • P1: Powder-coated RAL 7001, silver grey

Parts and characteristics

  • Aerodynamically formed frame
    • Reduced weight and increased rigidity due to special profile
    • Helps to optimise the airflow, hence reducing the air-regenerated noise
    • Reduces the pressure loss
    • Covers the edges of the sound absorbing material
  • Resonating panels fitted to reduce air-regenerated noise by resonance

Construction features

  • Sound absorbing material and resonating panels fitted to reduce air-regenerated noise by resonance
  • Aerodynamically formed splitter frame (bullnose radius 20 mm) that helps to reduce turbulence on both the upstream and downstream sides; frame with grooves for increased rigidity
  • Frame edges with bullnose to protect the infill
  • Operating temperature up to 100 °C, up to 300 °C for 8 h max.

Materials and surfaces

  • Splitter frames, centre mullion and resonating panels made of galvanised sheet steel 1.0917
  • Absorption material is mineral wool
    • To EN 13501, fire rating Class A1, non-combustible
    • RAL quality mark RAL-GZ 388
    • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
    • Inert to fungal and bacterial growth according to EN 846

Standards and guidelines

  • Insertion loss and sound power level of air-regenerated noise tested to ISO 7235
  • Meets the hygiene requirements of VDI 6022, VDI 3803 Part 1 and DIN 1946 Part 4
  • EC Directive 2014/34/EC (ATEX): Equipment and protective systems intended for use in areas with potentially explosive atmospheres
  • EC Directive 1999/92/EC (ATEX): Improvement of the safety and health protection of workers potentially at risk from explosive atmospheres.

Maintenance

  • Low maintenance as construction and materials are not subject to wear
  • Regular cleaning intervals according to VDI6022

 

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Product Information

 

Certificates

 

Operation Manuals