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Silencieux.
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Silencieux. - 1

ABSORPTION SILENCERS WITH 200 and 100 mm BAFFLES OVERVIEW TECHNICAL CHARACTERISTICS OVERVIEW: The rectangular shaped SA series of silencers are basic elements for air-conditioning plants, as they allow the noise generated in air ducting to be reduced. They can be used for air or smoke intake or expulsion systems, ventilation for soundproofed cabins, cooling circuits for generator sets, and in airconditioning and ventilation systems. ABSORPTION SILENCERS: These are used for all applications in which mean and high sound frequencies are between 500 Hz and 8000 Hz. ABSORPTION SILENCERS AND RESONANCE: These are used in all special applications where mean and low sound frequencies are between 120 Hz and 1000 Hz. CHARACTERISTICS: Silencer - outer frame: Made of galvanised steel sheet. Silencer - fixing: By tightening bolts or nuts to connect the silencer's flange to that on the ducting. SPECIAL SILENCERS: SAR Model with baffles enclosed in micro-expanded steel sheet. SARF model as the SAR but with baffles enclosed in microexpanded steel sheet and water-repellent fibre form. SR model absorption and resonance silencer SRR model as per SR but with baffles enclosed by microexpanded steel sheet. SRRF MODEL as per SR but with baffles enclosed by microexpanded steel sheet and water repellent fiber form. SL model External frame and baffle holding frame made of raw aluminium sheet. SLR model as per SL but with baffles enclosed by microexpanded steel sheet. SLRF model as per SL but with baffles enclosed by microexpanded steel sheet and water-repellent fibre form. SI model Outer frame and baffle holding frame made of stainless steel sheet. SIR model as per SI but with baffles enclosed by microBaffles - holding frame: In galvanised steel sheet. expanded steel sheet. Absorption and resonance baffles - holding sheet: The height of the baffle (H) is broken down into two equal sections SIRF model as per SI but with baffles enclosed by microand for the entire depth (P) the lower part is covered by a solid expanded steel sheet and water-repellent fibre form. sheet. The upper part may be covered by a micro-expanded sheet. Baffles - material used: Jacket made of high density mineral fibre, covered externally by a protective glass film. Baffles - reaction to fire: Not inflammable - class 0.

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Silencieux. - 2

ABSORPTION SILENCERS WITH 200 mm BAFFLES PERFORMANCE 500 mm DEEP SILENCER Frequency in Hz

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Silencieux. - 3

ABSORPTION AND RESONANCE SILENCERS WITH 200 mm BAFFLES PERFORMANCE 500 mm DEEP SILENCER Frequency in Hz

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Silencieux. - 4

ABSORPTION SILENCERS WITH 200 mm BAFFLES TECHNICAL DRAWING - BASE DIMENSIONS PRESSURE DROP EXACT DIMENSIONS THAT CAN BE MADE FOR THE SILENCER BASES AND NUMBER OF BAFFLES IN RELATION TO THE PITCH PRESSURE DROP IN PASCAL AND AIR FRONT VELOCITY FOR A DEPTH OF 1 METRE

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Silencieux. - 5

ABSORPTION SILENCERS SELECTION DIAGRAM PRESSURE DROP CORRECTION COEFFICIENT DIAGRAM FOR SELECTING A SILENCER WITH 200 mm BAFFLES v f - Velocità frontale in m/sec. 10 8 6 PRESSURE DROP CORRECTION COEFFICIENT FOR SILENCERS WITH A DEPTH NOT EQUAL TO 1000 mm

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Silencieux. - 6

ABSORPTION SILENCERS WITH 100 mm BAFFLES 500 mm DEEP SILENCER Frequency in Hz 1200 mm DEEP SILENCER Frequency in Hz 63 2500 mm DEEP SILENCER Frequency in Hz 63 1500 mm DEEP SILENCER Frequency in Hz 63

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Silencieux. - 7

ABSORPTION SILENCERS WITH 100 mm BAFFLES 500 mm DEEP SILENCER Frequency in Hz 1200 mm DEEP SILENCER Frequency in Hz 2500 mm DEEP SILENCER Frequency in Hz 63

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Silencieux. - 8

ABSORPTION SILENCERS WITH 100 mm BAFFLES TECHNICAL DRAWING - BASE DIMENSIONS PRESSURE DROP EXACT SIZES THAT CAN BE MADE FOR SILENCER BASES AND NUMBER OF BAFFLES IN RELATION TO PITCH PRESSURE DROP IN PASCAL AND AIR FRONT VELOCITY FOR A DEPTH OF 1 METRE

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Silencieux. - 9

ABSORPTION SILENCERS SELECTION DIAGRAM PRESSURE DROP CORRECTION COEFFICIENT SELECTION DIAGRAM FOR A SILENCER WITH 100 mm BAFFLES v f - Velocità frontale in m/sec. 87 6 5 4 3 2 PRESSURE DROP CORRECTION COEFFICIENT FOR SILENCERS WITH A DEPTH NOT EQUAL TO 1000 mm

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Silencieux. - 11

BAFFLES FOR ABSORPTION SILENCERS ABSORPTION/RESONANCE SILENCERS TECHNICAL DRAWING TECHNICAL CHARACTERISTICS CHARACTERISTICS: Baffles, holding frame : In galvanised steel sheet. Absorption baffles, holding sheet : In micro-expanded sheet. Absorption and resonance baffles, holding sheet : the baffle is divided into two equal part in height (H) and the lower part is coated throughout its depth by a solid sheet. The top part may be coated with a micro-expanded sheet. Baffles, materials used : Jacket in high density mineral fibre, coated externally with a protective glass film. Baffles, reaction...

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Silencieux. - 13

CIRCULAR ABSORPTION SILENCERS WITH OR WITHOUT POD OVERVIEW TECHNICAL CHARACTERISTICS OVERVIEW: The SC series of circular silencers are basic element in any airconditioning system, as they make it possible to reduce the noise propagated in the air ducting. Various assembly systems can be used, allowing them to be used for air or smoke intake or extraction systems, ventilation for soundproof cabins, cooling circuits for generator sets, and air-conditioning and ventilation systems, as well as fitting them directly on axial fans or on outlet of centrifugal fans. SILENCERS WITH POD : These are...

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Silencieux. - 14

CIRCULAR ABSORPTION SILENCERS WITHOUT POD ATTENUATION PERFORMANCE ATTENUATION FOR SILENCERS EXPRESSED IN dB WITH REFERENCE TO 8 OCTAVE BANDS Dx1 Nominal diametre SILENCER WITH A DEPTH EQUAL TO ITS DIAMETER Fitted in a ducting system Frequencies in Hz 63 Other applications Frequencies in Hz ATTENUATION FOR SILENCERS EXPRESSED IN dB WITH REFERENCE TO 8 OCTAVE BANDS D x 1,5 SILENCER DEPTH, ONE AND A HALF ITS DIAMETER Fitted in a ducting system Frequencies in Hz 63 Other applications Frequencies in Hz

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Silencieux. - 15

CIRCULAR ABSORPTION SILENCERS WITHOUT POD ATTENUATION PERFORMANCE ATTENUATION FOR SILENCERS EXPRESSED IN dB WITH REFERENCE TO 8 OCTAVE BANDS Dx2 SILENCER WITH A DEPTH EQUAL TO TWICE ITS DIAMETER Fitted in a ducting system Frequencies in Hz 63 Other applications Frequencies in Hz The attenuation values "Fitted in a ducting system" relate to silencers fitted in a ducted plant system (duct - silencer duct). Where silencers are positioned at the end of ducting, or fitted directly to the inlet on an axial fan or intake on an centrifugal fan, the additional attenuation shown in the "different...

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