631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
www.lightolier.com © 2011 Philips Group • B0711
Calculite
®
CFL Open Downlight
8023
Page 2 of 2
8 3/4" Aperture Triple Tube Vertical Lamp
Job Information
Type:
Coefficients Of Utilization
Quick Calculator
INITIAL
FOOTCANDLES
Spacing Ratio = 0.9
80
70
60
50
40
30
20
10
25
50
75
100
125
150
175
200
AREA PER FIXTURE IN SQUARE FEET
3 4 5 6
7
8
9
10
11
12
13
14
CENTER TO CENTER DISTANCE OF FIXTURES IN FEET
This quick calculator chart determines the number and spacing of 1 lt. 42W PL-T units
with clear reflector, for any level of illumination.
ROOM SURFACE REFLECTANCES:
80% Ceiling; 50% Wall; 20% Floor
3200 Lumens Per Lamp
RCR= 1
(Rm. Width= 10xMtg. Ht. above work plane)
RCR= 5
(Rm. Width= 2xMtg. Ht. above work plane)
RCR=10
(Rm. Width= Mtg. Ht. above work plane)
CANDLEPOWER SUMMARY
ANGLE MEAN CP LUMENS
0
1982
5
2098
196
10
2051
15
1817
510
20
1507
25
1323
610
30
1124
35
830
511
40
470
45
211
180
50
36
55
6
11
60
3
65
1
1
70
0
75
0
0
80
0
85
0
0
90
0
ZONAL LUMENS AND PERCENTAGES
ZONE
LUMENS %LAMP %LUMINAIRE
0-30 1316
41.14
65.17
0-40 1827
57.11
90.47
0-60 2018
63.08
99.93
0-90 2019
63.12 100.00
40-90 192
6.02
9.53
60-90
1
.04
.07
90-180 0
.00
.00
0-180 2019
63.12 100.00
CERTIFIED TEST REPORT NO. 0701FR
COMPUTED BY LSI PROGRAM **TEST LITE**
CALCULITE 8 3/4” DIA. APERTURE RECESSED
COMPACT FLUORESCENT OPEN DOWNLIGHT.
COMFORT CLEAR™ REFLECTOR 1-42W PLT TRIPLE
TUBE LAMP. LUMEN RATING = 3200 LMS.
**EFFICIENCY=63.1%**
DATE: MAR. 31, 99
TESTED ACCORDING TO IES PROCEDURES.
TEST DISTANCE EXCEEDS FIVE TIMES THE
GREATEST LUMINOUS OPENING OF
LUMINAIRE.
EFFECTIVE FLOOR CAVITY REFLECTANCE = .20
80
70
50
30
10
50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
1 .71 .69 .68 .69 .68 .67 .67 .66 .65 .64 .64 .63 .62 .62 .61 .60
2 .67 .64 .62 .65 .63 .62 .63 .62 .60 .62 .63 .59 .60 .59 .58 .57
3 .63 .60 .58 .62 .59 .57 .60 .58 .56 .59 .57 .56 .57 .56 .55 .54
4 .59 .56 .54 .59 .56 .54 .57 .55 .53 .56 .54 .52 .55 .53 .52 .51
5 .56 .53 .50 .55 .52 .50 .54 .52 .50 .53 .51 .49 .52 .50 .49 .48
6 .46 .43 .42 .52 .49 .47 .51 .49 .47 .51 .48 .46 .50 .48 .46 .45
7 .44 .41 .39 .49 .46 .44 .49 .46 .44 .48 .45 .43 .47 .45 .43 .42
8 .41 .39 .37 .46 .43 .41 .46 .43 .41 .45 .43 .41 .45 .42 .40 .40
9 .39 .36 .35 .44 .41 .38 .43 .40 .38 .43 .40 .38 .42 .40 .38 .37
10 .35 .32 .31 .41 .38 .36 .41 .38 .36 .40 .37 .35 .40 .37 .35 .35
WALL REFLECTANCE
ROOM
CA
VITY
RA
TIO
1500
750
2250
85
ϒ
75
ϒ
65
ϒ
55
ϒ
45
ϒ
35
ϒ
0
ϒ
5
ϒ
15
ϒ
25
ϒ
