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MS 

Splitter sound attenuator with high insertion loss, even in the low-frequency range

Splitter sound attenuator, basically a duct section with integral splitters (type MK) with resonating panels, for ventilation and air conditioning systems

  • Attenuation effect due to absorption and resonance
  • Energy efficient due to aerodynamically formed frame (bullnose radius 20 mm)
  • Sound absorbing material is biosoluble and hence hygienically safe
  • Sound absorbing material faced with glass fibre fabric as a protection against erosion due to airflow velocities up to 20 m/s
  • The sound absorbing material is non-combustible, to EN 13501, fire rating class A1
  • Leakage class C and pressure class 2 according to EN 15727
  • 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 up to 100 °C, with expanded metal (variant L) up to 300 °C for a limited period of time


Optional equipment and accessories

  • Expanded metal as an additional mechanical protection for the sound absorbing material
  • Stainless steel variant A2 (1.4301), with optional perforated metal facing as an additional protection for the sound absorbing material
  • Other stainless steel and aluminium variants as well as PUR coating are upon request

General information

Application

  • Splitter sound attenuators used for the reduction of fan noise and air-regenerated noise in ventilation and air conditioning systems
  • Attenuation effect due to absorption and resonance
  • Broadband attenuation even in the low frequency range of critical fan noise
  • For use in areas with potentially explosive atmospheres (EC Directive 2014/34/EU (ATEX)), zones 1, 2, 21 and 22 (outside) according to Directive 1999/92/EC


Special characteristics

  • Resonating panels ensure increased insertion loss in the frequency range of critical fan noise
  • Leakage class C and pressure class 2 according to EN 15727
  • Energy savings due to aerodynamically formed splitter frame
    • Up to 30 % lower differential pressure
  • Hygiene tested and compliant with VDI 6022
  • Multi-section construction available for large dimensions



Nominal sizes

  • Width B: 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400 mm
    • Intermediate sizes: in increments of 1 mm
      • Splitter thickness 100 mm: 150 – 2399 mm
      • Splitter thickness 200 mm: 250 – 2399 mm
      • Splitter thickness 230 mm: 288 – 2399 mm
    • Sizes from 2401 – 4800 mm are available with the width subdivided in increments of 1 mm
      • Even no. of splitters: centre division
      • Odd no. of splitters: off-centre division
  • Height H: 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800 mm
    • Intermediate sizes 150 – 1799 mm in increments of 1 mm
    • Sizes from 1801 – 3600 mm are available with the height subdivided in increments of 1 mm
      • Centre division
  • Length L: 500, 750, 1000, 1250, 1500 mm
    • Intermediate sizes 501 – 1499 mm in increments of 1 mm
  • Sizes from 1501 – 3000 mm are available with the length subdivided in increments of 1 mm
    • Part L1: 1000, 1250, 1500 mm
    • Part L2: at least 501 mm and ≤ L1, in increments of 1 mm
  • Width and/or height subdivided if B + H > 4200 mm
  • Airway width S
    • Minimum: splitter thickness T × 0.25, but not < 40 mm
    • Maximum: splitter thickness T × 2


Variants

  • MS with splitter type MK
    • Splitter thickness 100 mm
    • Splitter thickness 200 mm
    • Splitter thickness 230 mm

 Construction


Duct

  • No entry: with duct
  • OL: without duct (set of MK splitters only)


Splitter surface

  • F: Glass fibre fabric
  • L: Glass fibre fabric faced with expanded metal cover for additional mechanical protection of the sound absorbing material
    • Stainless steel construction with perforated metal facing


Materials and surfaces

  • No entry: galvanised steel 1.0917
  • A2: Stainless steel 1.4301
  • P1: splitters powder-coated RAL 7001, silver grey


Air duct connection

  • No entry: without air duct profile (set of splitters only)
  • P: air duct profile 30 mm, galvanised steel or stainless steel
  • W: angle section frame 35 × 35 × 3 mm, galvanised steel
  • T: air duct profile 20 mm, galvanised steel


Matching frame

  • No entry: none
  • G: matching frame (only for angle section frame, W)


Parts and characteristics

  • Duct
    • Leakage class C and pressure class 2 according to EN 15727
    • Various duct connections available
Matching frame
  • Angle section frame with the same pattern as the requested sound attenuator
  • For installation onto a duct (duct by others)
  • Aerodynamically formed frame
    • Covers the edges of the sound absorbing material
    • Reduces the pressure loss
    • Helps to optimise the airflow, hence reducing the air-regenerated noise
    • Increased rigidity due to special profile
  • Absorption material
  • Resonating panel


Construction features

  • Bent duct with grooves for increased rigidity
  • Sound attenuators with angle section frame, width or height subdivided
    • Galvanised construction only
  • 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 for increased rigidity
  • Operating temperature up to 100 °C; variant L up to 300 °C for 8h max.


Material and surfaces

  • Duct, flange in galvanised sheet steel 1.0917 or stainless steel 1.4301
  • Angle section frame in galvanised L steel S235JRC2
  • Splitter frame, centre mullion and resonating panels made of galvanised sheet steel 1.0917 or stainless steel 1.4301
    • Expanded metal cover made of galvanised steel 1.0917
    • Perforated metal facing made of stainless steel 1.4301
    • Sound absorbing material mineral wool
      • According to EN 13501, fire rating class A1, non-combustible
      • RAL quality mark RAL-GZ 388
      • Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No. 1272/2008
      • Faced with glass fibre fabric, as a protection against erosion from airflow velocities of up to 20 m/s
      • Inert to fungal and bacterial growth according to EN 846


Standards and guidelines

  • Insertion loss and sound power of air-regenerated noise tested according 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
  • Leakage class and pressure class according to EN 15727



Maintenance

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

Tehnički podaci

Function, Technical Data, Quick Sizing, Specification Text, Order Code

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

Splitter sound attenuators type MS contain splitters type MK.
The attenuation effect of the MK splitters is due to absorption and resonance. The splitters have a mineral wool infill as sound absorbing material. Part of the splitter surface that runs parallel to the airflow is covered with resonating panels. These panels start oscillating due to the sound (resonance) and hence absorb sound energy. Resonance works best in the frequency range of critical fan noise. There is a higher attenuation across a wider frequency range when compared to mere absorption splitters.


Dimensions

  • DIMENSIONS

INominal sizes

  • Width B: 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400 mm
  • Intermediate sizes: in increments of 1 mm
  • Splitter thickness 100 mm: 150 – 2399 mm
  • Splitter thickness 200 mm: 250 – 2399 mm
  • Splitter thickness 230 mm: 288 – 2399 mm
  • Splitter thickness 300 mm: 375 – 2399 mm
  • Sizes from 2401 – 4800 mm are available with the width subdivided in increments of 1 mm
  • Even no. of splitters: centre division
  • Odd no. of splitters: off-centre division


  • Height H: 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800 mm
  • Intermediate sizes 150 – 1799 mm in increments of 1 mm
  • Sizes from 1801 – 3600 mm are available with the height subdivided in increments of 1 mm
  • Centre division
  • Length L: 500, 750, 1000, 1250, 1500 mm
  • Intermediate sizes 501 – 1499 mm in increments of 1 mm
  • Sizes from 1501 – 3000 mm are available with the length subdivided in increments of 1 mm
  • Part L1: 1000, 1250, 1500 mm
  • Part L2: at least 501 mm and ≤ L1, in increments of 1 mm
  • Width and/or height subdivided if B + H > 4200 mm
  • Airway width S
  • Minimum: splitter thickness T × 0.25, but not < 40 mm
  • Maximum: splitter thickness T × 2

Installation details

  • INSTALLATION DETAILS

Installation and commissioning



  • Follow the installation manual and comply with the general codes of good practice in order to achieve the given performance data
  • Up to height H = 1200 mm, length L = 1500 mm and 40 kg: any installation orientation, but we recommend upright installation of splitters
  • From height H = 1201 mm: upright installation only
  • The length (L) of sound attenuator splitters and splitter sound attenuators refers to the airflow direction; be sure to note how width, height and length are defined, particularly in case of a vertical airflow
  • A turbulent airflow may cause damage to the splitters 
    • A straight upstream section is required upstream of the sound attenuator
    • The recommended minimum upstream section depends on the change of direction, change of cross-section and splitter arrangement
  • Installation in ducts outside closed rooms requires sufficient protection against the effects of weather

Preuzimanja

informacije o proizvodima

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Navedite svoju poruku i vrstu zahtjeva
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Zahvaljujemo na vašoj poruci!

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Naš odjel za servisne zahtjeve što skorije će vas kontaktirati.
Za opća pitanja u vezi s proizvodima ili uslugama možete i nazvati:
Tel.: +385 1 61 55 401 | Faks: +385 1 61 58 598