Type MSA

For increased insertion loss and broadband attenuation even in the low frequency range

Splitter sound attenuators with integral splitters with resonating panels, suitable for air conditioning systems

  • Attenuation effect due to resonance and absorption
  • Energy efficient due to aerodynamically profiled frame (radius > 15 mm)
  • Acoustic data measured to ISO 7235
  • Absorption material is biosoluble and hence hygienically safe
  • Absorption material faced with glass fibre fabric as a protection against erosion due to airflow velocities up to 20 m/s
  • Absorption material non-combustible, to EN 13501, fire rating class A1
  • Intermediate sizes in increments of 1 mm
  • For use in zones 1 and 2 as well as in zones 21 and 22 according to EU Directive 94/9/EC (ATEX)
  • Operating temperature up to 100 °C


Optional equipment and accessories

  • Additional perforated sheet metal to protect the absorption material
  • Stainless steel, aluminium and PUR-coated constructions upon request

Splitter sound attenuator, variant MSA200 00136746_0

Splitter thickness 200 mm

  • Application
  • Description

Application

  • Splitter sound attenuators of Type MSA used for the reduction of fan noise and air-regenerated noise in air conditioning systems
  • Attenuation effect due to absorption and resonance
  • Broadband attenuation even in the low frequency range of critical fan noise
  • Hygiene tested and certified to VDI 6022
  • For use in potentially explosive atmospheres (ATEX), zones 1, 2, 21 and 22 (outside)

Special characteristics

  • Resonating panels ensure increased insertion loss in the frequency range of critical fan noise
  • Up to 30 % lower differential pressure
  • Energy efficient and/or space saving due to aerodynamically profiled frame
  • Hygiene tested and certified
  • Multi-section construction available for large dimensions

Nominal sizes

  • B: 200 (only MSA100), 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400
  • MSA100: intermediate sizes (width) 140 – 2399 mm in increments of 1 mm
  • MSA200: intermediate sizes (width) 250 – 2399 mm in increments of 1 mm
  • MSA230: intermediate sizes (width) 288 – 2399 mm in increments of 1 mm
  • Width subdivided: 2401 – 4800 mm, in increments of 1 mm
  • 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)
  • Height subdivided: 1801 – 4800 mm, in increments of 1 mm
  • L: 500, 750, 1000, 1250, 1500 mm (intermediate sizes 501 – 1499 mm in increments of 1 mm)
  • Length subdivided: 1501 – 2999 mm in increments of 1 mm

Variants

  • MSA100: splitter thickness of 100 mm
  • MSA200: splitter thickness of 200 mm
  • MSA230: splitter thickness of 230 mm

Construction

Surface of splitter area not covered by a resonating panel

  • F: Glass fibre fabric
  • L: Glass fibre fabric and additional perforated sheet metal to protect the absorption material


Duct connection

  • P: Standard flange 30 mm
  • W: Angle section frame 35 × 35 × 3 mm

Parts and characteristics

  • Casing
  • Aerodynamically profiled frame
  • Absorption material and resonating panels fitted to reduce air-regenerated noise by absorption and resonance

Construction features

  • Casing with grooves for increased rigidity; larger sizes are extra reinforced
  • Aerodynamically profiled splitter frame (radius > 15 mm) that enables a reduction of turbulence both upstream and downstream; frame with grooves for increased rigidity
  • Frame edges are folded to protect the infill
  • Attenuators with width or height subdivided have an angle section frame
  • Operating temperature up to 100 °C

Materials and surfaces

  • Casing, splitter frames, centre mullion and resonating panels made of galvanised sheet steel
  • Flange and angle section frame made of galvanised steel
  • Absorption material is mineral wool


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
  • Faced with glass fibre fabric as a protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Standards and guidelines

  • Insertion loss and sound power level of air-regenerated noise tested to ISO 7235
  • Meets the hygiene requirements of VDI 6022, DIN 1946, parts 1 and 2 as well as of VDI 3803
  • Directive 94/9/EC: Equipment and protective systems intended for use in potentially explosive atmospheres

Maintenance

  • Maintenance-free as construction and materials are not subject to wear

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +7 495 221-5161 | Fax: +7 495 221-5171