January, 2016 120-45
Model F120 UV/IR Flame Detector
CHANGING THE DETECTION MODE
The Model F120 is a highly versatile ame detector that provides multiple modes of operation.
The end-user has the capability to change the mode of operation of the detector based on
their protection needs and/or reduce susceptibility to false alarm sources.
Detection Modes
Triple Mode UV/IR
This mode utilizes three sensors to detect a re, one solar-blind UV sensor and two IR sensors.
The detector takes advantage of the use of these three sensors to conrm a re and reduce
false alarms and it will not be blinded by dense smoke which makes this detector superior
to other brands in the market today. It is suitable for both indoor and outdoor use and offers
increased false-alarm immunity over a UV detector.
UV Mode
This mode utilizes the solar-blind UV sensor only. It is ideal for use indoors and in areas not
susceptible to sources of false alarms. This mode provides the shortest response rate as it
will detect UV radiation instantaneously.
Dual IR Mode
This mode utilizes the two IR sensors within the detector. The two IR sensors specically
detects the IR icker of a ame and the spike in Temperature in the Hydrocarbon CO
2
band.
This combination provides a ame detector which is highly immune to false alarms.
IR Mode
This mode utilizes an IR sensor to monitor for the icker generated by a ame. It permits the
detector to ignore steady state IR sources such as hot objects.
Tools Required
The following are required to change the detection mode of the detector:
• 4 mm hex wrench to unlock the locking screw of the detector
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