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PRODUCTS CATALOGUE 4PRODUCT BULLETIN
LINEAR SLOT DIFFUSERS
BETABETA in t r i d u s a l
in t r i d u s a l
BETABETA in t r i d u s a l
in t r i d u s a l
..w e cw gw b t a o m
..w e cw gw b t a o m
Dubai Head Office:Dubai Head Office:
e 97 6 1 5 0 07+ T l: 2 4 1e 97 6 1 5 0 07+ T l: 2 4 1971 2 6 0 7Fax: + 4 165971 2 6 0 7Fax: + 4 165
1e + 7 706 97774 T l: 9 1e + 7 706 97774 T l: 94ax +F : 971 70 978764ax +F : 971 70 97876
Email:betai@betag.comEmail:betai@betag.com
P.O.Box 50708, DubaiUnited Arab EmiratesP.O.Box 50708, DubaiUnited Arab Emirates
index
BETABETA in t r I d u s a l
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1-2
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PERFO M NC ATAA E DR
LINEAR SLOT DIFFUSERS
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Available in 1 to 6 slots.Available in 1 to 6 slots.
Flush - mounted linear diffuser.Flush - mounted linear diffuser.
Standard lenght : 1000mm & 2000mm per section. OtherStandard lenght : 1000mm & 2000mm per section. Other
lengths are availabe on request. lengths are availabe on request.
180 fully adjustable air flow pattern by means of two air 180 fully adjustable air flow pattern by means of two air
deflections per slot. deflections per slot.
Available with hit-and-miss damper which controls the air flow Available with hit-and-miss damper which controls the air flow
rate without affecting the air flow pattern; can be used as anrate without affecting the air flow pattern; can be used as an
equalizing grid. equalizing grid.
For each slot the air deflector and hit-and-miss damper are For each slot the air deflector and hit-and-miss damper are
individually adjustable. individually adjustable.
Removable flange type end cap allows extending orRemovable flange type end cap allows extending or
shortening slot diffuser line without replacing existing pieces.shortening slot diffuser line without replacing existing pieces.
The deflector and the hit and miss damper are powder coated The deflector and the hit and miss damper are powder coated
with black color as standard. with black color as standard.
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dimensions & discharge details
01 ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICEALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
Horizontal Left andHorizontal Right Discharge
Hit-and-miss damper
5,5
Neck Size
78
9,7 5,555
9,1
18,1 27,
3
28,519,5
Flange Size
28,5 2,6
Deflector
Neck Size
Horizontal Left andVertical Discharge
Deflector
5,5 9,7
78
5,5
55
27,3
2,619,528,5
18,1
28,5
9,1
Neck Size
5,5 9,7
78
5,5
55
27,3
2,6
18,1
28,5
9,1
19,528,5
Flange Size Flange Size
Deflector
LINEAR SLOT DIFFUSERS
linear slot diffuser fixing details
ORDERING SYSTEM
Available types of finishing:Available types of finishing:
>>>>
Powder coated to RAL codesPowder coated to RAL codes
Standard Neck & Flange Sizes:Standard Neck & Flange Sizes:
Standard slot size 20mmStandard slot size 20mm
>>>>
Natural anodized aluminium finishNatural anodized aluminium finish
No. of Slots No. of Slots
Neck Size: (mm)Neck Size: (mm)
Flange Size: (mm)Flange Size: (mm)
1 Slot1 Slot 2 Slot2 Slot 3 Slot3 Slot 5 Slot5 Slot 6 Slot6 Slot4 Slot4 Slot
4747
7676
8585
114114
123123
152152
161161 199199 237 237
190190 228 228 266 266
TYPETYPE CURVECURVE SIZESIZE FINISHFINISH
CURVE : IF CURVE REQUIRED
CURVE : IF CURVE REQUIRED
(ONLY RLD)(ONLY RLD)
POWDER COATED FINISH AS PER RAL CODESPOWDER COATED FINISH AS PER RAL CODESRAL:RAL:
ANODIZED: ANODIZED: ANODIZED ALUMINIUM FINISHANODIZED ALUMINIUM FINISH
LENGTH NUMBER OF SLOTS LENGTH NUMBER OF SLOTS
SLD:SLD:
RLD:RLD:
SLPPLY LINEAR DIFFUSER WITH DEFLECTORSSLPPLY LINEAR DIFFUSER WITH DEFLECTORS
WITH HIT & MISS DAMPERWITH HIT & MISS DAMPER
RETURN LINEAR DIFFUSER WITHOUTRETURN LINEAR DIFFUSER WITHOUTDEFLECTORS WITH SQUARE SHAPE PUNCHED STRIP.DEFLECTORS WITH SQUARE SHAPE PUNCHED STRIP.
EXAMPLE:SLD 2000 3S RAL 9016 EXAMPLE:SLD 2000 3S RAL 9016
CURVECURVE
02 ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICEALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
Plenum By Others Adjustable ScrewBy Others
Hanging Bridge bracketBy Others
False CeilingBy Others
Supporting Clamps
Slot Diffuser
LINEAR SLOT DIFFUSERS
1 - End Caps (F1)1 - End Caps (F1)
(A) - L-Shaped End Caps(A) - L-Shaped End Caps
L-shape flange : 30 55mm, available in different lengths to match slot diffuser width.
Very easy to install and remove. Gives flexibility to extend or shorten slot diffuser without replacement of existing pieces.
L-shape flange : 30 55mm, available in different lengths to match slot diffuser width.
Very easy to install and remove. Gives flexibility to extend or shorten slot diffuser without replacement of existing pieces.
Fixed at the end of slot diffuser line. Fixed at the end of slot diffuser line.
Supplies FREE with fixing screws. Supplies FREE with fixing screws.
(B) -Mitered Corners End Caps (B) -Mitered Corners End Caps
Available in 1 to 6 slot Available in 1 to 6 slot
2 - Corner pieces (F2) 2 - Corner pieces (F2)
Available in 1 to 6 slot Available in 1 to 6 slot
Available in any combination of X.Y (X-300 mm Y=300 mm as standard ) : 45 , 90 , 135
Available in any combination of X.Y (X-300 mm Y=300 mm as standard ) : 45 , 90 , 135
3 - Mitered ends (F3, F4) 3 - Mitered ends (F3, F4)
Standard lengths are available in mitered ends of 45 and 135 Standard lengths are available in mitered ends of 45 and 135
ACCESSORIES
03 ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICEALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
STRAIGHT JOINT END CAP
30
O44
30
Hole for Self-tapping screw
Hole for Self-tapping screw
MITERED JOINT END CAP
O64
Type RLD 3Swithout deflectorswith hit-and- miss dampers
For curved items,different sectionused as belowdrawing.
Minimum radius = 1000mm
F5
ACCESSORIES
04 ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICEALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
Miim
um
Radiu
s 1
r
n
: m
ete
55
NECK SIZE = 123 mm
FLANGE SIZE = 152 mm
PRODUCTS TESTINGPRODUCTS TESTING
TEST METHOD TEST METHOD
NOTES: NOTES:
The air diffusers were tested in accordance with the Air diffusion council test code for grilles, registers and diffusers n o. ADC
1062.GRD.84, the test was conducted in ETL testing laboratories.
The diffusers were installed in the ADC facility and supplied with measured volume of air. The static pressure was measured
(1-1.5) duct diameters upstream of the diffuser inlet.
Acoustical data was obtained employing Bruel and Kjaer digital frequency analyzer, and analyzed by computer. Sound power
levels were plotted on a graph of noise criteria curves which are in the ADC codes.
The air diffusers were tested in accordance with the Air diffusion council test code for grilles, registers and diffusers n o. ADC
1062.GRD.84, the test was conducted in ETL testing laboratories.
The diffusers were installed in the ADC facility and supplied with measured volume of air. The static pressure was measured
(1-1.5) duct diameters upstream of the diffuser inlet.
Acoustical data was obtained employing Bruel and Kjaer digital frequency analyzer, and analyzed by computer. Sound power
levels were plotted on a graph of noise criteria curves which are in the ADC codes.
LINEAR SLOT DIFFUSERS
PERFORMANCE DATA
The following tables include the results of tests conducted on three linear slot diffusers. The test results include Noise Criteria
(NC), static pressure versus air flow, throw and Ak. The diffusers were selected and supplied by Beta In October 1991. The
extrapolations and interpolation were made to cover a full range of sizes and parameters according to ETL testing laborato-
ries Inc. who made the tests.
The following tables include the results of tests conducted on three linear slot diffusers. The test results include Noise Criteria
(NC), static pressure versus air flow, throw and Ak. The diffusers were selected and supplied by Beta In October 1991. The
extrapolations and interpolation were made to cover a full range of sizes and parameters according to ETL testing laborato-
ries Inc. who made the tests.
05 ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICEALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
PERFORMANCE DATA
VERTICAL DISCHARGE
SYMBOLSL/S : Air volume in liter per second.
Ak : Effective face area in meter Square per 1000 mm.
Pt. : Total pressure in millimeters water gauge.
Th. : Throw in meters.
NC : Noise Criteria.
L/S : Air volume in liter per second.
Ak : Effective face area in meter Square per 1000 mm.
Pt. : Total pressure in millimeters water gauge.
Th. : Throw in meters.
NC : Noise Criteria.
Supply
Vertical discharge flow pattern.
Noise Criteria values are based on(10 db) room attenuation.Damper is fully open.
Throw values are based on terminal velocity of 0.50 m/s
Supply
Vertical discharge flow pattern.
Noise Criteria values are based on(10 db) room attenuation.Damper is fully open.
Throw values are based on terminal velocity of 0.50 m/s
*
*
*
*
*
CONDITIONS
11
22
33
44
55
66
SLOTS SLOTS L/S L/S per per meter meter K AK A Pt Pt Th Th N CN C AK AK P tP t Th Th NC NC KA KA Pt Pt Th Th NC NC
16 MM 20 MM 25 25 MMMM
242435354747595971718383
9494
2424474771719494
118118142142165165
474771719494
118118142142165165189189
71719494
118118
142142
1651651891892122129494
118118142142165165189189212212236236118118
142142165165189189
212212236236283283
0.580.581.321.322.342.343.663.665.335.337.247.249.589.580.200.200.760.761.701.703.053.054.754.756.866.869.409.400.360.360.790.791.401.402.182.183.153.154.274.275.595.590.480.480.840.841.321.321.911.912.592.593.383.384.324.320.560.560.860.861.241.241.701.702.212.212.792.793.453.450.610.610.890.891.221.221.571.572.012.012.492.493.563.56
0.370.841.502.343.414.636.130.130.491.091.953.044.396.020.230.510.901.402.022.733.580.310.540.841.221.662.162.760.360.550.791.091.411.792.210.390.570.78
0.068
1.281.592.28
0.058
0.046
0.038
0.026
0.010
1.82.43.14.96.4
1.84.05.27.08.2
2.44.05.57.38.5
3.74.65.27.08.5
4.04.95.87.38.2
4.04.65.87.68.9
HORIZONTAL DISCHARGE
SLD/RLD - SUPPLY
*S.I. UNITS
SYMBOLSL/S : Air volume in liter per second.
Ak : Effective face area in meter Square per 1000 mm.
Pt. : Total pressure in millimeters water gauge.
Th. : Throw in meters.
NC : Noise Criteria.
L/S : Air volume in liter per second.
Ak : Effective face area in meter Square per 1000 mm.
Pt. : Total pressure in millimeters water gauge.
Th. : Throw in meters.
NC : Noise Criteria.
NOTESThe large throw values are based on the minimum terminal velocity of 0.25m/Sec.The large throw values are based on the minimum terminal velocity of 0.25m/Sec.The middle throw values are based on the middle terminal velocity of 0.50 m/Sec.The middle throw values are based on the middle terminal velocity of 0.50 m/Sec.The small throw values are based on the maximum terminal velocity of 0.75m/Sec.The small throw values are based on the maximum terminal velocity of 0.75m/Sec.
**
**
**
16mm 16mm 20mm 25mm 25mm SLOTS L/S L/S per per meter meter Ak Pt Pt Th Th NC NC Ak Ak Pt Pt Th Th NC Ak Pt Pt Th Th NC
3- . - .0.51 . 1 2 2 1
PERFORMANCE DATA SLD/RLD - RETURN
*S.I. UNITS16mm 16mm 20mm 25mm25mm
SLOTS L/S L/S per per meter meter Ps NCPs NC Ps NCPs NC Ps NC Ps NC
SYMBOLSL/S : Air volume in liter per second.
P/s : Negative static pressure in milimeters water gauge.
NC : Noise Criteria.
L/S : Air volume in liter per second.
P/s : Negative static pressure in milimeters water gauge.
NC : Noise Criteria.
CONDITIONSReturn
Damper is full open.
Noise Criteria values are based on(10 db) room attenuationThe tested specimens were of 1000mm length
Return
Damper is full open.
Noise Criteria values are based on(10 db) room attenuationThe tested specimens were of 1000mm length
*
*
*
*
35354747
59597171
8383717183839494118118142142
9494118118142142165165212212142142
165165189189236236283283283283142142189189
236236283283330330189189236236283283330330378378
1
2
33
4
5
6
3.38 243.38 245.95 315.95 319.13 409.13 4013.81 4913.81 4918.66 5518.66 553.97 243.97 245.80 315.80 317.19 367.19 3611.11 4511.11 4515.88 5315.88 533.97 253.97 25
8.94 398.94 3912.14 4612.14 4620.16 5420.16 54
6.19 336.19 33
6.34 286.34 288.61 358.61 3511.11 4011.11 4016.78 4816.78 4824.92 5524.92 554.44 264.44 267.86 357.86 3512.30 4312.30 4317.66 4817.66 4824.02 5524.02 556.19 296.19 299.64 369.64 3613.89 4413.89 4418.86 4918.86 4924.69 5524.69 55
2.16 193.81 255.84 328.84 3911.94 442.54 193.71 254.60 29
2.54 19
7.11 3610.16 422.54 203.96 265.72 317.77 37
4.06 2212.90 43
5.51 287.11 3210.74 3815.95 442.84 215.03 287.87 34
11.30 38
3.96 2315.37 44
15.80 4412.07 39
6.17 298.89 35
1.38 151.38 152.44 202.44 203.74 263.74 265.66 315.66 317.64 357.64 351.63 151.63 152.37 202.37 202.94 232.94 234.55 294.55 296.50 346.50 341.63 161.63 162.53 212.53 213.66 253.66 254.97 304.97 30
2.60 182.60 188.26 348.26 34
3.53 223.53 224.55 264.55 266.87 306.87 3010.21 3510.21 351.82 171.82 173.22 223.22 225.04 275.04 27
7.23 307.23 30
2.53 182.53 189.84 359.84 35
10.11 3510.11 357.72 317.72 31
3.95 233.95 235.69 285.69 28
08 ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICEALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
PERFORMANCE DATA
VERTICAL DISCHARGE
SYMBOLSCFM : Air volume in cubic feet per minute.
Ak : Effective face area in meter Square feet per foot.
Pt. : Total pressure in inches water gauge.
Th. : Throw in feets.
NC : Noise Criteria.
CFM : Air volume in cubic feet per minute.
Ak : Effective face area in meter Square feet per foot.
Pt. : Total pressure in inches water gauge.
Th. : Throw in feets.
NC : Noise Criteria.
Supply
Vertical discharge flow pattern.
Noise Criteria values are based on(10 db) room attenuation.Damper is fully open.
Throw values are based on terminal velocity of 75 fpm
The tested specimens were 3ft length
Supply
Vertical discharge flow pattern.
Noise Criteria values are based on(10 db) room attenuation.Damper is fully open.
Throw values are based on terminal velocity of 75 fpm
The tested specimens were 3ft length
*
*
*
*
*
CONDITIONS
11
22
33
44
55
66
SLOTS SLOTS PerPer FootFoot k Ak A Pt Pt Th Th N CN C Ak Ak P tP t Th Th NC NC AtAt Pt Pt Th Th NC NC
3/5 4/5 11
151523233030383845455353
6060151530304545
606075759090
10510530304545
60607575909010510512012045456060
7575
9090105105120120135135606075759090105105120120135135150150
75759090
105105
120120135135150150
*
CMFCMF
180180
0.0230.0230.0520.0520.0920.0920.1440.1440.2100.2100.2850.2850.3770.377
0.0100.0230.0410.0610.0860.1130.150
0.031
78111721
HORIZONTAL DISCHARGE
SLD/RLD - SUPPLY
*IMPERIAL UNITS
SYMBOLSCFM : Air volume in cubic feet per minute.
Ak : Effective face area in meter Square feet per feet.
Pt. : Total pressure in inches water gauge.
Th. : Throw in feet.
NC : Noise Criteria.
CFM : Air volume in cubic feet per minute.
Ak : Effective face area in meter Square feet per feet.
Pt. : Total pressure in inches water gauge.
Th. : Throw in feet.
NC : Noise Criteria.
NOTESThe large throw values are based on the minimum terminal velocity of 50 fpm.The large throw values are based on the minimum terminal velocity of 50 fpm.The middle throw values are based on the middle terminal velocity of 75 fpm.The middle throw values are based on the middle terminal velocity of 75 fpm.The small throw values are based on the maximum terminal velocity of 150 fpm.The small throw values are based on the maximum terminal velocity of 150 fpm.
**
**
**
3/53/5 4/5 11SLOTS CFMCFM Per Per Foot Foot Ak Pt Pt Th Th NC NC Ak Ak Pt Pt Th Th NC Ak Pt Pt Th Th NC
0.020 1-3-7
PERFORMANCE DATA SLD/RLD - RETURN
*IMPERIAL UNITS*IMPERIAL UNITS3/53/5 4/5 11
SLOTS CFM per footCFM per foot Ps NCPs NC Ps NCPs NC Ps NC Ps NC
SYMBOLSCFM : Air volume in cubic feet per minute.
P/s : Negative static pressure in inches water gauge.
NC : Noise Criteria.
CFM : Air volume in cubic feet per minute.
P/s : Negative static pressure in inches water gauge.
NC : Noise Criteria.
CONDITIONSReturn
Damper is full open.
Noise Criteria values are based on(10 db) room attenuationThe tested specimens were of 3ft length
Return
Damper is full open.
Noise Criteria values are based on(10 db) room attenuationThe tested specimens were of 3ft length
*
*
*
*
23233030383845455353454553536060757590906060757590901051051351359090
1051051201201501501801809090120120
150150180180210210120120150150180180210210240240
1
2
33
4
5
6
0.133 190.133 190.234 260.234 260.359 350.359 350.544 440.544 440.734 500.734 500.156 190.156 190.228 260.228 260.283 310.283 310.438 400.438 400.625 480.625 480.156 200.156 20
0.352 340.352 340.478 410.478 410.794 490.794 49
0.244 280.244 28
0.250 230.250 230.339 300.339 300.438 350.438 350.661 430.661 430.981 500.981 500.175 210.175 210.309 300.309 300.484 38 0.484 38 0.695 430.695 430.945 500.945 500.244 240.244 240.380 310.380 310.547 390.547 390.742 440.742 440.972 500.972 50
0.085 150.150 210.230 280.348 350.470 400.100 150.146 210.181 250.280 320.400 380.100 160.156 220.225 270.306 33
0.160 180.508 39
0.217 240.280 280.423 340.628 400.112 170.198 240.310 30
0.445 34
0.156 190.605 40
0.622 400.475 35
0.243 250.350 31
0.054