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
  • Available in standard sizes and many intermediate sizes
  • 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
  • Powder-coated
  • Stainless steel
  • Brine and salt-water resistant aluminium construction (AlMg3)
small_tab1_Serie MSA
  • 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

Variants

  • MSA-100: splitter thickness of 100 mm
  • MSA-200: splitter thickness of 200 mm
  • MSA-230: 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 perforated sheet metal

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
  • Subdivided construction with angle section frame
  • Operating temperature up to 100 °C

Materials and surfaces

  • Casing, splitter frames, partitioning panels and resonating panels made of galvanised sheet steel
  • Standard flange and angle sections 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/EG
  • Faced with glass fibre fabric as protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Technical information

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code

Functional description

Splitter sound attenuators of Type MSA contain splitters of Type MKA.

The attenuation effect of the splitters is due to absorption and resonance.

The splitters have a mineral wool infill as absorption 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.

msa
Msa

 

Splitter sound attenuators used for the reduction of fan noise and air-regenerated noise in air conditioning systems. Attenuation effect due to absorption and resonance. Energy-saving as well as hygiene tested and certified.

Sound attenuators which consist of a casing with duct connections and splitters. Splitters consists of an aerodynamically profiled frame (radius > 15 mm), absorption material, and resonating panels.

Frame edges are folded to protect the sound absorbing infill.

Insertion loss and sound power level of the air-regenerated noise tested to ISO 7235.

Meets the hygiene requirements of VDI 6022, DIN 1946, parts 2 and 4, as well as of VDI 3803.

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

Materials and surfaces

  • Casing, splitter frames, partitioning panels and resonating panels made of galvanised sheet steel
  • Standard flange and angle sections 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/EG
  • Faced with glass fibre fabric as protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Construction

Surface of splitter area not covered by a resonating panel

  • F: Glass fibre fabric
  • L: Glass fibre fabric and perforated sheet metal

Duct connection

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

Technical data

  • Splitter thickness: 100, 200, 230 mm
  • Nominal sizes: 140 × 150 × 500 mm – 2400 × 1800 × 1500 mm
  • Width subdivided: up to 4800 mm
  • Height subdivided: up to 3600 mm
  • Length subdivided: up to 3000 mm
  • Operating temperature: – 100 °C
msa

References

Hypercube, Moscow, Russia

  • Description
Project:
- Hypercube

Field of application:
- Office Building
 
Location:
- Moscow, Russia 
 
TROX-Products:
- Air-water-Systems: Multi-Service-Chilled-Beams, DID312, DID632
- Air diffusor: SL-A, TRS
- Acoustics: CA, MSA
- Control Units: TVJD-Easy, EN-D, VFR

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265