Fiberlux Series0 pages

2 7/8˝
(73 mm)
(27mm)
2 3/8˝
(60 mm)
4˝
INTRINSICALLY SAFE LIGHTING
MAX LEVEL
(102mm)
EVEL
L
FM LISTINGS FOR LIGHT SOURCE SERIES ISL-4X-120-20-0
LIGHT SOURCES
CLASS
GROUPS
MAX OPERATING
MAX AMBIENT
CLASS
L
1 1/16˝
(27mm)
EVEL
DIV
DIV
GROUPS
TEMP CODE
MAX AMBIENT
TEMPERATURE
1
A,B,C & D
T2D
50°C (122°F)
1
E&F
T3
35°C (95°F)
TEMPERATURE
MIN LEVEL TEMPERATURE
7 1/8˝
I
2
A,B,C & D
955°C (1750°F)
50°C (122°F)
3˝ CLASS
(181mm)
FM LISTINGS FOR LIGHT SOURCE SERIES ISL-7-120-20-0
150 R.F.
CLASS
DIV
GROUPS
MAX OPERATING
OPERATING
MAX AMBIENT
TEMPERATURE
TEMP. CODE
TEMPERATURE
FLANGE
I
1
C&D
165°C
T3B
40°C
1 13/16˝ T3B
7
A
II
1
E&F
165°C
40°C 1/2˝
(46mm)
III
1
(191mm)
FM LISTINGS FOR FIBER OPTIC CABLE SERIES ISL-FOC
MAX LEVEL
Light sources are available enclosed in
NEMA 4, 4X, 7, or 12 enclosures. The
NEMA 4, 4X, and 12 light source enclosures
incorporate a unique passive heat removal
and dissipation system, which lowers the
operating temperatures and extends lamp
life. The NEMA 4, 4X, and 12 light source is
Factory Mutual Approved for the Class,
Division, and Groups as indicated.
Explosion-proof NEMA 7 enclosures are
supplied
standard with adjustable internal timers
to limit lamp on times to minimize heat
buildup and extend lamp life.
7 7/8˝ I
(200mm) II
ASS
.F.
-2PLS
MIN LEVEL
FIGURE 2
FIGURE 1
LUG BOLT SIZE
1/2˝ (13 mm)
4 PLACES
61/8˝
(156 mm)
2 7/8˝
(73 mm)
6˝
(152mm)
16˝
(406 mm)
ON
143/4˝
(375 mm)
5/16˝
HOLES
85/8˝
(219 mm)
1˝ (25mm)
Bottom o
tank
153/4˝
(400 mm)
Length of indication (L) Plus 9.625˝
Submerged float length
10˝
(254 mm)
L
9˝
(229 mm)
(8 mm) DIA˝
-4 PLS
NEMA 4, 4X, AND 12 LAMP ENCLOSURE
NEMA 7 LAMP ENCLOSURE
How do Fiber Optics Work?
Fiber optics is based upon the principle of internal reflection. This
phenomenon very efficiently reflects light without loss. Fiber optics use
this principle by encasing a small diameter glass fiber core in a casing
of lower refractive index, called cladding. Light enters the end of the
fiber within a specified entrance angle. Upon striking the interface of
core and cladding, light is internally reflected back toward the center of
the core. As this internal reflection continues, the light is transmitted
down the fiber.
CLADDING
CORE
LIGHT
ENTRANCE
LIGHT
EXIT
LIGHTING
6˝
m)
TRANSMISSION OF LIGHT
THROUGH OPTICAL FIBER
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