SPECTRAL SENSITIVITY RANGE—
UV: 0.185 to 0.245 micron.
IR: 4.45 microns.
Figure 19 illustrates the spectral response range of
the UV and IR sensors.
CONE OF VISION—
The detector has a nominal 90 degree cone of vision
with the highest sensitivity along its central axis. See
Figure 20.
SENSITIVITY—
The U7652 detects a 1 foot by 1 foot gasoline fire at
50 feet, a 2 foot by 2 foot JP4, 5, or 8 fire at 100 feet,
and a 3 foot by 3 foot JP4, 5, or 8 fire at 150 feet.
RESPONSE TIME—
Response time is a function of fuel, fire size, distance
and orientation of the fire. The detector is field pro-
grammable (using a jumper plug) for a 0.5 or 3 sec-
ond response time when exposed to a saturating fire
signal.
RELAY CONTACT RATING—
One Fire and one Fault relay, each rated 5 amperes
(resistive) at 30 vdc. The Auxiliary relay in the
U7652C is rated 1 ampere at 30 vdc. The Fire and
Auxiliary relays are field programmable for latching or
non-latching operation. In latching operation the relay
is reset by removing operating power for 0.1 second.
ENCLOSURE MATERIAL—
Copper-free aluminum (red) or 316 stainless steel,
with stainless steel mounting bracket.
TEMPERATURE RATING—
Operating: –40°F to +167°F (–40°C to +75°C).
Storage: –40°F to +185°F (–40°C to +85°C).
HUMIDITY RANGE—
0 to 95% RH. Can withstand 100% condensing
humidity for short periods of time.
CERTIFICATIONS—
FMR: See Appendix A for details.
CSA: Class I, Division 1, Groups B, C and D;
Class I, Division 2, Groups A, B, C and D
(T4A).
Class II/III, Division 1, Groups E, F, and
G; Class II/III, Division 2, Groups F and G
(T4A).
Enclosure Type 4X
ULC: Explosion-proof for Class I, Division 1,
Groups C and D.
Dust ignition-proof for Class II, Division 1,
Groups E, F, and G.
17 95-8385
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