95-8546
18
17.3
SPECIFICATIONS
OPERATING VOLTAGE—
24 Vdc nominal (18 Vdc minimum, 30 Vdc maximum).
Maximum ripple is 2 volts peak-to-peak.
POWER CONSUMPTION—
Without heater: 2.8 watts at 24 Vdc nominal;
4.8 watts at 24 Vdc in alarm.
3.1 watts at 30 Vdc nominal;
5.4 watts at 30 Vdc in alarm.
Heater only: 8 watts maximum.
Total power:
17.5 watts at 30 Vdc with EOL resistor
installed and heater on maximum.
EOL resistor must be ceramic, wirewound type, rated
5 watts minimum, with actual power dissipation not to
exceed 2.5 watts.
For HART models, refer to Addendum number 95-8636.
POWER UP TIME—
Fault indication clears after 0.5 second; device is ready
to indicate an alarm condition after 30 seconds.
OUTPUT RELAYS—
Fire Alarm relay, Form C, 5 amperes at 30 Vdc:
The Fire Alarm relay has redundant terminals
and normally open / normally closed contacts,
normally de-energized operation, and latching or
non-latching operation.
Fault relay, Form A, 5 amperes at 30 Vdc:
The Fault relay has redundant terminals and
normally open contacts, normally energized
operation, and latching or non-latching operation.
Auxiliary relay, Form C, 5 amperes at 30 Vdc:
The auxiliary relay has normally open / normally
closed contacts, nor mally energized or
de-energized operation, and latching or non-
latching operation.
CURRENT OUTPUT (Optional)—
0 to 20 milliampere (±0.3 mA) dc current, with a
maximum loop resistance of 500 ohms from 18 to
19.9 Vdc and 600 ohms from 20 to 30 Vdc.
LON OUTPUT—
Digital communication, transformer isolated (78.5 kbps).
TEMPERATURE RANGE—
Operating: –40°F to +167°F (–40°C to +75°C).
Storage:
–67°F to +185°F (–55°C to +85°C).
Hazardous location ratings from –55°C to +75°C available
on flameproof model.
HUMIDITY RANGE—
0 to 95% relative humidity, can withstand 100%
condensing humidity for short periods of time.
0
°
15
°
30
°
45
°
15
°
30
°
45
°
VIEWING ANGLE
C1288
100
90
80
70
60
50
40
30
20
10
DETECTION
DISTANCE
(PERCENT)
100% REPRESENTS THE MAXIMUM DETECTION DISTANCE FOR A
GIVEN FIRE. THE SENSITIVITY INCREASES AS THE ANGLE OF
INCIDENCE DECREASES.
Figure 19—Detector Cone of Vision
10.2
(25.9)
4.8
(12.2)
4.7
(11.9)
B2223
Figure 20—Dimensions in Inches (cm)
