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2.8.1 SENSITIVITY
The detector offers four (4) sensitivity settings. The settings refer to an n-heptane or
gasoline fire of 1ft² (0.1m²), from low sensitivity of 50 ft (15m) to 215 ft (65m). For other
types of fuel sensitivity, refer to Table 3.
Table 18: Sensitivity Settings
Sensitivity Setting
Detector Distance - feet
Detector Distance - meters
15 50
15
30 (default)
100
30
45 150
45
60 215
65
2.8.2 ALARM
DELAY
The detector is equipped with an Alarm Delay option, which provides programmable
time delays with settings at:
•
Antiflare*
(default)
*The Antiflare mode is selected to prevent false alarms in locations where fast flares
may be present. The Time Delay for fire alarms in this mode ranges from 2.5 to 15
seconds (usually, less than 10 seconds).
Other delays settings are available:
0, 3, 5, 10, 15, 20 or 30 seconds
When an Alarm (Detection) level condition occurs, the detector delays the execution of
the Alarm outputs by the specified period of time. The detector then evaluates the
condition for 3 seconds. If the Alarm level is still present, the Alarm outputs are
activated. If this condition no longer exists, the detector returns to its standby state.
The Alarm delay option affects the output relays and the 0-20mA. The LEDs and
outputs indicate warning levels during the delay time only if the fire condition exists.
2.8.3 ADDRESS
SET-UP
The detector provides up to 247 addresses that can be changed with RS485
communication link or HART Protocol.
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