RK_img_01psd.png
RK

Attenuators 

Aerodynamically optimised splitter frame 

Conforms to VDI 6022

RK_img_01psd.png

RK   

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

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 characteristics

  • 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.



Material and surfaces

  • Splitter frame, centre mullion and resonator plates made of galvanised sheet steel 1.0917
  • 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
    • 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


Informaţii tehnice

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

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration of RK RK_gc_02ai.png

1 Splitter frame
2 Resonating panels on both sides
3 Sound absorbing material

The attenuation effect of the RK splitters is due to resonance. 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. The splitters have a mineral wool infill that prevents an amplification of the sound.

 


Splitter thickness200 mm
Nominal sizes (H × L)

150 × 450 – 1500 × 1500 mm, 450 × 150 – 1800 × 1500 mm


Height subdivide

Not available

Length subdivided

Not available

Intermediate sizesIn increments of 1 mm
Operating temperature

Up to 100 °C, up to 300 °C for 8h 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.

RK200-A, insertion loss De [dB] and differential pressure Δpt [Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]

6312525061014
50050617122158114

500

1005105113161
100050824142467131

1000

1005186133569
1500501132172775147

1500

1008258144078


RK200-C, insertion loss De [dB] and differential pressure Δpt [Pa]

L

Airway width

Centre frequency fm [Hz]

vs [m/s]

6312525061014
5005081472158114

500

100363113161
100050102092467131

1000

1007104133569
1500501327112775147

1500

10010135144078

Sound attenuator splitters used for the reduction of fan noise and air-regenerated noise in air conditioning systems. Attenuation effect due to resonance. To be used in combination with sound absorbing splitters. 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 air-regenerated noise measured according to EN ISO 7235. Hygiene compliant with VDI 6022, VDI 3803 Part 1 and DIN 1946 Part 4. Suitable for 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-efficient due to aerodynamically formed splitter frame
    • Up to 30 % lower differential pressure
  • Hygiene tested and compliant with VDI 6022



Material and surfaces

  • Splitter frame, centre mullion and resonator plates made of galvanised sheet steel 1.0917
  • 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
    • Inert to fungal and bacterial growth according to EN 846


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


Technical data

  • Splitter thickness: 200 mm
  • Nominal sizes: 150 × 450 – 1500 × 1500 mm, 450 × 150 – 1800 × 1500 mm
  • Intermediate sizes: in increments of 1 mm
  • Operating temperature up to 100 °C, up to 300 °C for 8 h max.

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


Sizing data

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


RK – … – A – /200×600×1500
| | | | | | |
1 2 3 4 5 6 7


1 Type
RK Sound attenuator splitter 


2 Variant
No entry: TROX standard variants 


3 Resonator construction
Optimised for the following frequencies
A 250/125 Hz
C 125/63 Hz

 

4 Material
No entry: galvanised steel (1.0917)
P1 powder-coated RAL 7001 (silver grey) 


5 Splitter thickness [mm]
200
 
6 Height [mm]
150 – 1800 


7 Length in airflow direction [mm]
150 – 1500


Order example: RK–A/200×1000×1200


Resonator construction250/125 Hz
Height1000 mm
Length1200 mm

Dimensions, Weights, Installation details

  • Dimensions
  • Weights
  • INSTALLATION DETAILS
RK_gc_01ai.png
  • H: 150 – 1800 mm
  • L: 500, 750, 1000, 1250, 1500 mm
  • T: 200 mm
  • Intermediate heights (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 3300 mm max., 80 kg max.

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

RK-A [kg] 
Upstream conditions after bends, junctions or a narrowing or widening of the duct, vertical upstream section, splitters upright
RK_gc_36ai.ai.link

B Width of the sound attenuator

H Height of the sound attenuator and the splitters

RK_gc_36ai.ai.link
RK_gc_38ai.ai.link
RK_gc_35ai.ai.link
RK_gc_37ai.ai.link

Installation and commissioning


  • Splitters are supplied as ready-to-install kits
  • Follow the installation information and comply with the general codes of good practice in order to achieve the given performance data
  • Up to height H = 1200 mm: 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
  • Installation in ducts outside of closed rooms requires sufficient pection against the effects of weather

 

Descărcări fişiere

informaţii produs

  • Imprimare pagină RK

  • Product data sheet Type RK

    RK_PD_2024_04_17_DE_en Product data sheet 3 MB pdf

certificate

  • ATEX manufacturer's statement RK

    RK-Atex_CE_ATEX_2022_02_23_DE_en Manufacturer's statement 1,4 MB pdf

  • Declaration of hygiene conformity RK 

    RK_HC_2022_02_23_DE_en Conformity 1,5 MB pdf

  • Non-CE Manufacturer's statement RK

    RK_NotCE_2022_02_08_14_49_11_DE_en Certificate 1,4 MB pdf

manuale de operare

  • Installation manual RK

    XS_MS_XK_MK_RK_IM_A00000090240_V1_2022_04_GB_en Installation manual  2,7 MB pdf
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Suntem aici pentru dumneavoastră

Vă rugăm să exprimaţi mesajul dumneavoastră şi tipul de cerere
Tel.: +40 31 82 43 041 | Fax: +40 31 82 43 040

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Câmpurile marcate cu (*) sunt obligatorii.

Contact

Vă mulţumim pentru mesaj!

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Departamentul nostru de Cereri Service o să vă contacteze în cel mai scurt timp Pentru întrebări generale privind produsele sau serviciile puteţi suna şi la:
Tel.: +40 31 82 43 041 | Fax: +40 31 82 43 040

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