RS RT

The units are rigidly constructed and consist of a galvanised sheet metal casing containing a series of centre and side splitters.
The casing is provided with Pittsburgh corner seams.
End flanges have a red oxide finish and are not drilled as standard unless ordered with matching flanges.
The splitters are filled with no hygroscopic and incombustible material.
This material is covered with a gauze scrim and then further covered with galvanised perforated sheet metal.
Where attenuators are exposed to the weather, all infill material shall be lined with an impervious film to prevent ingress on moisture.
See page G-6 for selections from our Q-Seal range.
Standard attenuators are suitable for duct pressures up to 1kPa.
Attenuators suitable for higher pressures or manufactured from special materials such as stainless steel or aluminium, are available on request.
In addition, special finishes such as epoxy coating can be provided.

The values quoted in the tables are defined as static insertion loss as defined in BS4718:1971, Methods of Test for Attenuators for Air Distribution System.
Insertion losses greater than 50dB are not reported as their achievement in practice is difficult.
The performance data is based on Australian-sourced and manufactured materials.

Attenuators shall be as manufactured by Elta Fans and shall have the performance as scheduled.
The casing shall be manufactured from high quality galvanised mild steel sheet with Pittsburgh corner seams.
Mild steel end flanges shall be provided pop-riveted and sealed to the case.
These shall be finished with zinc-rich primer or hot dipped galvanised after fabrication if requested.
Acoustic splitters shall have a semi-circular inlet fairing with tapered discharge profile to minimise pressure drop and regenerated noise, like Q-Tech RT series.
Where nominated, straight splitter attenuators can be used like Q-Tech RS series.
Airways shall be straight and parallel.
The infill material shall be either rockwool or fibreglass as specified by the manufacturer.
The infill material shall be covered with a gauze scrim to prevent erosion of the fibres, then encased in galvanised perforated sheet metal Where attenuators are exposed to the weather they shall be of the Q-Seal type.
All infill materials shall be lined with an impervious film to prevent the ingress of moisture.
The infill material when tested in accordance with AS1530.3:1989 shall have the following indices: -

- Ignitability 0
- Spread of flame 0
- Heat evolved 0
- Smoke developed 0

Performance Data - RS Straight Splitters
		Static Insertion Loss, dB
	Length	Octave Band \|Centre Frequency (hz)								Module
Model RS..	mm	63	125	250	500	1k	2k	4k	8k	widths, mm
07B	900	6	12	23	36	45	43	36	28	275 550, 825, 110, 1375, 1650, 1925, 2200 Free Area 27%
07C	1200	8	16	30	47	50	50	47	39
07D	1500	9	19	35	49	50	50	49	42
07E	1800	10	21	41	50	50	50	50	45
07F	2100	12	25	45	50	50	50	50	50
07G	2400	13	28	48	50	50	50	50	50
10B	900	5	10	19	31	39	35	27	21	300, 600, 900, 1200, 1500, 1800, 2100, 2400 Free Area 33%
10C	1200	6	13	26	41	48	46	37	26
10D	1500	8	16	30	47	50	50	43	31
10E	1800	9	18	35	49	50	50	48	36
10F	2100	10	20	40	50	50	50	50	37
10G	2400	11	23	44	50	50	50	50	39
12B	900	4	9	17	28	35	31	22	17	325, 650, 975, 1300, 1625, 1950, 2275 Free Area 38%
12C	1200	5	11	22	37	43	40	30	21
12D	1500	6	13	26	43	47	44	34	24
12E	1800	7	15	31	47	50	48	40	28
12F	2100	8	17	35	50	50	50	43	30
12G	2400	9	20	39	50	50	50	45	32
15B	900	4	8	15	25	31	28	18	13	350, 700, 1050, 1400, 1750, 2100 Free Area 43%
15C	1200	5	9	19	33	38	34	23	16
15D	1500	5	11	23	39	44	39	26	18
15E	1800	6	13	27	45	49	46	32	21
15F	2100	7	15	31	49	50	50	37	24
15G	2400	8	18	35	50	50	50	41	26

Silencer