Spectrex 20/20MI - Mini Triple IR (IR3) Flame Detector - Manual (Page 25)

Spectrex Inc. - SharpEye TM Mini IR3 Flame Detector Manual – TM 787100, Rev. D April 2011
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b. Alarm Delay
The detector is equipped with an Alarm Delay option, which provides
programmable time delays of 0 to 30 seconds with eight (8) fixed settings:
0, anti-flare, 3, 5, 10, 15, 20, and 30 seconds.
When an Alarm (Detection) level condition is encountered, the detector
delays the execution of the Alarm output’s relay by the specified period of
time. The detector will then evaluate the condition for 3 seconds. If the
Alarm level is still present, the Alarm outputs will be activated. If this
condition no longer exists, the detector will return to its standby state. The
Alarm delay option will affect the alarm relay and the 4-20mA output. The
LED will indicate warning level during the delay time only if the fire condition
exists.
Anti Flare
Anti Flare mode is selected to prevent false alarm in locations where fast
flares may be present. The Time delay for fire alarm in this mode is from 2.5
to 15 seconds (mostly less than 10 seconds).
Table 10: Time Delay
Delay (seconds)
0
*A – anti-flare
3
5
10
15
20
30
* Default
Note: The FM approval does not allow use of 20, and 30 second setting delay