San Diego Plastics
2220 McKinley Avenue
National City  CA  91950
800/925-4855   619/477-4855   FAX 619/477-4874

 

Para-Lite 1
1/2" x 1/2" 1/2" (nominal)

Specifications
Parabolic Louvers shall be Para-Lite 1 as manufactured by A.L.P. Lighting Components, Inc., and shall be one piece injection molded of polystyrene or acrylic with all parabolic surfaces prepared with a primary undercoat, highly specular vacuum metalized finish. Cell dimensions shall be 1/2" x 1/2" x 1/2" and shall provide 44 shielding with a louver efficiency of not less than 46%. This louver has a VCP index rating of .97 (specular silver finish). Available in nominal panel sizes of 1' x 4', 2' x 2' and 2' x 4'


VISUAL COMFORT PROBABILITY TABLE
100 FC Work Plane Illumination Work Plane FC = 100

  LUMINARIES LENGTHWISE LUMINARIES CROSSWISE
ROOM DIM MOUNTING HEIGHT
W L 8.5 10 13 16 8.5 10 13 16
20 20 100 100 100 96 100 100 100 94
20 30 100 100 100 98 100 100 100 97
20 40 100 100 100 99 100 100 100 98
20 60 100 100 100 100 100 100 100 99
30 20 100 100 100 98 100 100 100 96
30 30 100 100 100 99 100 100 100 98
30 40 100 100 100 100 100 100 100 99
30 60 100 100 100 100 100 100 100 100
30 80 100 100 100 100 100 100 100 100
40 20 100 100 100 99 100 100 100 97
40 30 100 100 100 100 100 100 100 99
40 40 100 100 100 100 100 100 100 100
40 60 100 100 100 100 100 100 100 100
40 80 100 100 100 100 100 100 100 100
40 100 100 100 100 100 100 100 100 100
60 30 100 100 100 100 100 100 100 100
60 40 100 100 100 100 100 100 100 100
60 60 100 100 100 100 100 100 100 100
60 80 100 100 100 100 100 100 100 100
60 100 100 100 100 100 100 100 100 100
100 40 100 100 100 100 100 100 100 100
100 60 100 100 100 100 100 100 100 100
100 80 100 100 100 100 100 100 100 100
100 100 100 100 100 100 100 100 100 100

TS: TECHNICAL SUPPORT
Lighting Research Laboratories, Inc.
Test Report No. LRL 397-3K, Date 3/5/97.
Description: Commercially Available 2' x 4' Troffer
2/32W T8 Lamps, 1/2" deep Parabolic Specular Silver Louver.
Luminary Watts = 60.0,
Catalog Number: Louver PL1 24 SPS
Lamp Type: F32T8/TL80, Lumens: 3050, Number of Lamps: 2

* Other testing results available upon request.

Total Luminaire Efficiency: 46.2%
Plane: 0 90
Spacing Criteria: 1.2 1.5
Shielding Angles: 43 43

Lighting Fixtures - Panel will sometimes require additional cutting for proper installation. Louver panels can also be specified with the Avoida-Notch optional frame - to specify add suffix-AN50 to the base catalog number. For color designation use B for black, W for white. For specular finish color designation should follow SP (i.e., SPG for gold, SPS for silver).

Lighted Ceilings - Louver panels are designed to fit any standard 1' x 4', 2' x 2' or 2' x 4' tee bar grid system.

Special Sizes - Special sizes are available, contact A.L.P.


ZONAL CAVITY COEFFICIENTS OF UTILIZATION

Ceiling Wall RCR

EFFECTIVE FLOOR CAVITY REFLECTANCE = 20

80 70 50 30 10 00
70 50 30 10 70 50 30 10 50 30 10 50 30 10 50 30 10 00
0 55 55 55 55 54 54 54 54 51 51 51 49 49 49 47 47 47 46
1 52 51 50 49 51 50 49 48 48 47 47 47 46 45 45 44 44 43
2 50 48 46 45 49 47 45 44 46 44 43 44 43 42 43 42 41 40
3 48 45 43 41 47 44 42 41 43 41 40 42 40 39 41 40 39 38
4 45 42 39 37 44 41 39 37 40 38 37 39 37 36 38 37 36 35
5 43 39 36 34 42 38 36 34 38 35 34 37 35 33 36 34 33 32
6 40 36 33 31 40 36 33 31 35 33 31 34 32 31 34 32 31 30
7 38 34 31 29 37 33 31 29 33 30 28 32 30 28 32 30 28 27
8 36 31 28 26 35 31 28 26 30 28 26 30 27 26 29 27 26 25
9 33 28 25 23 33 28 25 23 28 25 23 27 25 23 27 25 23 22
10 30 28 22 20 29 25 22 20 24 21 20 24 21 19 23 21 19 19

SPECULAR FINISH

CATALOG NO. DESCRIPTION DIMENSION
PL1 14SPS SPECULAR SILVER 11-3/4" X 47-3/4"
PL1 22SPS SPECULAR SILVER 23-3/4" X 23-3/4"
PL1 24SPS SPECULAR SILVER 23-3/4" X 47-3/4"

Products listed above are polystyrene. For Acrylic Louvers, add A after catalog number. DURABOLIC finish available on Specular Silver only. To order, replace SPS with DSPS. For further finish replace SPS with SPG for Specular Gold* or SSS for Semi-Specular Silver.
*DURABOLIC Finish standard on Specular Gold.


ZONAL LUMEN SUMMARY

ZONE LUMENS % LAMP % FIXT
0-30 1308 21.4 46.4
0-40 2191 35.9 77.8
0-60 2816 46.2 100
0-90 2816 46.2 100
90-180 0 0.0 0.0
0-180 2816 46.2 100.0

LUMINANCE DATA IN FOOTLAMBERTS

ANG. IN DEG. AVG. 0-DEG. AVG. 45-DEG. AVG. 90-DEG.
45 1440 1888 2001
55 28 105 17
65 0 0 0
75 0 0 0
85 0 0 0

CANDLE POWER DISTRIBUTION

VER. ANG. HORIZONTAL ANGLE ZONAL
LUMENS
0.0 22.5 45.0 67.5 90.0
0.0 1557 1557 1557 1557 1557  
5.0 1551 1560 1562 1583 1579 150
15.0 1518 1573 1612 1616 1624 452
25.0 1393 1475 1503 1612 1636 706
35.0 1203 1296 1424 1524 1558 883
45.0 626 727 821 851 870 609
55.0 10 17 37 7 6 15
65.0 0 0 0 0 0 0
75.0 0 0 0 0 0 0
85.0 0 0 0 0 0 0
90.0 0 0 0 0 0 0

 



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