Spectrex 20/20R - Single IR Flame Detector - Manual (Page 22)

Spectrex Inc. - SharpEye TM Single IR Flame Detector Manual – TM 20/20R, Rev. A January2005
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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).
Figure 5: Switch Locations
4.4 Built In Test
A. General
The detectors’ Built In Test (BIT) checks the following:
• Electronics circuitry
• Sensors
• Window cleanness
The detector is set by default to perform the BIT automatically and manually
(SW1-3 = ON) or can be manual only (set SW1-3 = OFF).
An Automatic BIT will regularly check the detector and warn of a problem by
operating the Fault relay (and setting the mA output to 0mA). Also, the Power LED
will Flash.
The manual BIT allows testing of unit at commissioning stage or as required and
will act in a similar manner to Auto BIT except that alarm/accessory relay
operation can also be tested (if appropriate SW1 switches selected)