MK_img_01psd.png
Sound attenuator splitters type MK
MK_img_02psd.psd.link
Aerodynamically optimised splitter frame

Aerodynamically optimised splitter frame

VDI6022_gs_01ai.ai.link
Tested to VDI 6022

Tested to VDI 6022

MK_img_01psd.png
MK_img_02psd.psd.link
VDI6022_gs_01ai.ai.link

MK

Splitter with high insertion loss and broadband attenuation even 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 absorption and 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
  • 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
  • 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
  • U-sheets and clamp sheets to join subdivided attenuator splitters

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 absorption and resonance
  • Broadband attenuation even in the low frequency range of critical fan noise
  • Hygiene tested and compliant with VDI 6022
  • 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

  • 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

  • H: 150 – 2500 mm
  • L: 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500 mm
  • Intermediate sizes of H and L are possible: 150 – 2500 mm in increments of 1 mm
  • Undivided construction: H + L 600 mm min., 4000 mm max., 100 kg max.
    • Dependency for H and L: If one dimension is greater than 1500 mm, the other one must not exceed 1500 mm
  • Height or length subdivided in case of a deviation, and for sizes 2501 – 5000 mm
    • Height subdivided from H ≥ 2501 mm, otherwise length subdivided


Variants

  • MK100: splitter thickness 100 mm
  • MK200: splitter thickness 200 mm
  • MK230: splitter thickness 230 mm


 Construction

Half of the splitter is covered by a resonator plate

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


Materials and surfaces

  • No entry: galvanised steel 1.0917
  • A2: stainless steel 1.4301
    • Construction L: Glass fibre fabric with perforated metal facing for additional mechanical protection of the sound absorbing material
  • P1: powder-coated, RAL 7001, silver grey


Parts and characteristics

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


Accessories

  • U-sheets/clamp sheets to join subdivided attenuator splitters (included with subdivided splitter constructions)



Construction features

  • 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; variant L up to 300 °C for 8h max.



Material and surfaces

  • 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 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


Teknik bilgiler

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

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

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.

 


Splitter thickness100, 200, 230 mm
Nominal sizes (H × L)150 × 450 – 1500 × 2500 mm, 450 × 150 – 2500 × 1500 mm
Height subdivide2501 – 5000 mm or if H and L > 1500 mm
Length subdivided2501 – 5000 mm or if H and L > 1500 mm
Intermediate sizesIn increments of 1 mm
Operating temperature

Up to 100 °C, variant L up to 300 °C for 8 h max.


The length (L) of sound attenuator splitters refers to the airflow direction.


Quick sizing tables provide a good overview of the insertion loss and of differential pressures for different airway widths and airflow
velocities. Intermediate values can be calculated with our Easy Product Finder design program.
The differential pressures apply to sound attenuators with a height of 1 m.


MK100, MS100, insertion loss De [dB] and differential pressure Δp[Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]
63125250500100020004000800061014
5005049101119252116102956

500

1003458131511882345
100050511182028342823133772

1000

8048121623251915102855

1000

100479132121151192651
150050614262937423629164487

1500

80511182232322419123263

1500

10049141929281913102956
200050717343846

> 50

44361952102

2000

80614242940402923133670

2000

100512192437342216113262
2500508204247

> 50

> 50

> 50

432260118

2500

80716303548473427144078

2500

100615243044412619123467
30005092250

> 50

> 50

> 50

> 50

502468133

3000

808193542

> 50

> 50

3931164485

3000

1007172835

> 50

473022133773



MK200, MS200, insertion loss De [dB] and differential pressure Δpt [Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]

63125250500100020004000800061014
50050461821241815132158114

500

1002412131512108113161
1000506132934392920172467131

1000

80511242629221613154384

1000

10049212224191311133569
1500508204146

> 50

4126212775147

1500

80616333640302016174894

1500

100514303234251714144078
2000501028

> 50

> 50

> 50

> 50

31263083164

2000

808224347

> 50

3924191953105

2000

100720384143322117164486

2000

2003122322181210792550
2500501335

> 50

> 50

> 50

> 50

37303392180

2500

801028

> 50

> 50

> 50

4728232159115

2500

1008254750

> 50

392419174894

2500

20041429282214118102854
3000501542

> 50

> 50

> 50

> 50

423436100197

3000

801134

> 50

> 50

> 50

> 50

33262364126

3000

1001030

> 50

> 50

> 50

4628221953103

3000

200517353426161310113059


MK230, MS230, insertion loss De [dB] and differential pressure Δpt [Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]

63125250500100020004000800061014
5008026141618141212154384

500

10025121315111011133569
100080611242529211515184997

1000

100510212225171314144078

1000

2002714121067982344
1500809173435412819182056109

1500

100815313134231616164588

1500

2003112017149101092549
20008013224445

> 50

3422222262121

2000

1001120403944292019185098

2000

200414262318121212102854
2500801627

> 50

> 50

> 50

4125252568134

2500

10013254948

> 50

3523222055108

2500

200518332822151513113059
3000801933

> 50

> 50

> 50

4829282774146

3000

1001630

> 50

> 50

> 50

4126252260117

3000

200621393426171715123364

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program.


Sound attenuator splitters 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.
Installation kit consists of an aerodynamically profiled frame (bullnose radius of 20 mm), sound absorbing material and resonating panels.
The splitter frame reduces pressure losses and air-regenerated noise. The special profile helps to reduce the weight and increase the rigidity of the splitters. Frame edges with bullnose 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, VDI 3803 Part 1 and DIN 1946 Part 4.
For use in areas with potentially explosive atmospheres (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

  • 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


Material and surfaces

  • 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


Construction

Half of the splitter is covered by a resonator plate

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


Materials and surfaces

  • No entry: galvanised steel 1.0917
  • A2: stainless steel 1.4301
    • Construction L: Glass fibre fabric with perforated metal facing for additional mechanical protection of the sound absorbing material
  • P1: powder-coated, RAL 7001, silver grey


Technical data

  • Splitter thickness: 100, 200, 230 mm
  • Dimensions: 150 × 450 – 1500 × 2500 mm, 450 × 150 – 2500 × 1500 mm
  • Height subdivided: up to 5000 mm
  • Length subdivided: up to 5000 mm
  • Intermediate sizes: in increments of 1 mm
  • Operating temperature: up to 100 °C, variant L up to 300 °C for 8 h max.


The length (L) of splitter sound attenuators refers to the airflow direction.

  • B [mm]
  • H [mm]
  • L (in airflow direction) [mm]
  • qv  (m³/h)
  • De At 250 Hz [dB]
  • Δpst [Pa]



MKFA2/200×600×1500
|| | | | | |
12 3 4 5 6 7


1 Type

MK Sound attenuator splitter with resonating panels 


2 Variant

No entry: TROX standard variants 


3 Splitter surface
F Glass fibre fabric
L Glass fibre fabric and expanded metal 


4 Material

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


5 Splitter thickness [mm]
100, 200, 230 


6 Height [mm]
150 – 5000 


7 Length in airflow direction [mm]
150 – 5000

Order example: MK–F-A2/100×1500×1000


Splitter surfaceGlass fibre fabric
MaterialStainless steel 1.4301
Splitter thickness100 mm
Height1500 mm
Length1000 mm


Assembly material SDKTo be ordered separately if splitters are to be subdivided by others.

SDKA2/200/2
||||
1234


1 Type
SDK
Accessories for splitters

 

2 Material
No entry: galvanised steel (1.0917)
A2 Stainless steel (1.4301)
P1 Galvanised steel (1.0917) and powder-coated, RAL 7001 (silver grey) 


3 Splitter thickness T [mm]
100
contains 2 U-sheets
200 contains 2 U-sheets
230 contains 2 U-sheets
300 contains 2 U-sheets 


4 Number of clamping plates for connection point
No entry: without clamping plates (for H or L ≤ 750 mm)
2 for H or L 751 - 1000 mm
4 for H or L ≥ 1001 mm


Order example: SDK-A2/200/2


MaterialStainless steel (1.4301)
Splitter thickness200 mm, with 2 U-sheets
No. of clamp sheets2

Dimensions, Weights

  • Dimensions
  • WEIGHTS
MK_gc_02ai.png
  • H: 150 – 2500 mm
  • L: 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500 mm
  • Intermediate sizes of H and L are possible: 150 – 2500 mm in increments of 1 mm
  • Undivided construction: H + L 600 mm min., 4000 mm max., 100 kg max.
  • Size limit for H or L: If one dimension is greater than 1500 mm, the other one must not exceed 1500 mm
  • Height or length subdivided is possible for sizes 2501 – 5000 mm

The total weight for intermediate sizes can be generated with our Easy Product Finder design program.


Accessories – variant ACC, Installation details

  • ACCESSORIES – VARIANT ACC
  • 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

,

,

,


Accessories – variant ACC



  • U-sheets/clamp sheets to join subdivided attenuator splitters (included with subdivided splitter constructions)
  •  U-sheets and clamping sheets (ACC) for previously provided single splitters that are to be connected
    • Made of galvanised sheet steel 1.0917 or stainless steel 1.4301
    • Number according to division rule for height or length subdivided splitters
    • Specification of the total dimensions is necessary for the delivery of the recommended number of pieces
  • Fixing material for connecting the U-sheets and clamp sheets to the sound attenuator to be provided by others

Number of clamp sheets per splitter joint:
H or L ≤ 750 mm: without clamp sheet
H or L 751 – 1000 mm: 1 clamp sheet on each side
H or L > 1000 mm: 2 clamp sheets on each side recommended
Number of U-sheets per splitter joint: 2
Follow the instructions in the installation manual.


,

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