Owner's Manual

Operation
The SS2 operates from standard 24 Volt DC power and interfaces to approved
fire alarm panels or standard PLC’s. When power is applied, an internal self
test is performed and the fault relay resets to show no faults. The detector is
then in normal operation.
The front LEDs flash every ten seconds to indicate power is on. The
continuous spectral data stream of information from the sensor array is
analyzed by the microprocessor. On Alarm, the detector activates the alarm
relay and stores all of the pre-fire spectral data from the sensor array in non-
volatile memory for retrieval and evaluation. This Fire Pic™ data can be used
to postulate the cause of the fire.
As part of the FS2000™ System, the the lens and complete optical
path can be checked using COP-i™ Test Sources in the system.
Connection into the FS2000™ System is by the four wire RS-485
FireBus™.
Tri-Mode Plot Shown on Computer Display
The field of view for the Fire
Sentry SS4 detectors is the
widest in the industry with a 120°
cone of vision. This means more
hazard area can be covered by
each detector. Greater sensitivity
also increases the volume
covered by each detector, up to
four times more than some other
detectors.
Using sophisticated
microprocessor signal processing
algorithms, false alarm rejection
is maximized – with virtual
immunity to false alarms from arc
welding, corona discharge and
other common non-fire sources.
Fire Sentry SS2
Detector
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