General Information

Application

• Sound attenuator splitters are used for the reduction of fan noise and air-regenerated noise in ventilation and air conditioning systems
• Attenuation effect due to absorption
• Broadband attenuation even in the high frequency range
• Hygiene tested and compliant with VDI 6022
• For use in areas with a potentially explosive atmosphere (EC Directive 2014/34/EU (ATEX)), zones 1, 2, 21 and 22 (outside) according to Directive 1999/92/EC

Special features

• Increased insertion loss even in the high-frequency range
• Energy savings due to aerodynamically profiled 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.
  • 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 in case of a deviation and for sizes 2501 – 5000 mm
  • Height subdivided from H ≥ 2501 mm, otherwise with the length subdivided

Variants

• XK100: splitter thickness 100 mm
• XK200: splitter thickness 200 mm
• XK230: splitter thickness 230 mm
• XK300: splitter thickness 300 mm

Construction

Splitter surface

• F: Glass fibre fabric
• L: glass fibre fabric faced with expanded metal as an additional mechanical protection for 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 as an additional mechanical protection for 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
• Sound absorbing material fitted to reduce air-regenerated noise by absorption

Accessories

• UU-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 are folded to protect the infill
• Operating temperature up to 100 °C; variant L up to 300 °C for 8h max.

Materials and surfaces

• Splitter frame and centre mullion made of galvanised sheet steel 1.0917 or stainless steel 1.4301
• Expanded metal facing made of galvanised steel 1.0917
• Perforated metal facing made of stainless steel 1.4301
• Absorption material is 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 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

Description

Variants

• XK100: splitter thickness 100 mm
• XK200: splitter thickness 200 mm
• XK230: splitter thickness 230 mm
• XK300: splitter thickness 300 mm

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
• Sound absorbing material fitted to reduce air-regenerated noise by absorption

Accessories

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

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.
  • 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 in case of a deviation and for sizes 2501 – 5000 mm
  • Height subdivided from H ≥ 2501 mm, otherwise with the length subdivided

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