Model 3600-I IR3 Flame Detector
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2.8.1 Sensitivity
The detector offers four sensitivity settings. The settings refer to an n-heptane or gasoline fire of 1ft
2
(0.1m
2
), from low sensitivity of 50 ft (15m) to 215 ft (65m).
Sensitivity Level
Detector Distance in feet
(meters)
1
50 (15)
2 (default)
100 (30)
3
150 (45)
4
215 (65)
For other types of fuel sensitivity, refer to
2.8.2 Alarm Delay
The detector is equipped with an Alarm Delay option, which provides programmable time delays with the
following settings:
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).
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 RS-485 communication link or HART
Protocol.
