Fire Alarm Systems | FCP‑320/FCH‑320 Conventional Automatic Fire Detectors
FCP‑320/FCH‑320 Conventional Automatic
Fire Detectors
www.boschsecurity.com
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High reliability of detection thanks to evaluation
electronics
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Active adjustment of the threshold (drift
compensation) if the optical sensor becomes dirty
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Activation of a remote external detector alarm
display possible
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Mechanical removal lock
(can be activated/deactivated)
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Dust-repellent labyrinth and cap construction
The FCP‑320/FCH‑320 Series Conventional Automatic
Fire Detectors set new standards in fire detection
technology through a combination of optical, thermal
and chemical (gas) sensors and intelligent evaluation
electronics. Their most impressive feature is their
ability to prevent false alarms, as well as speed and
accuracy of detection.
The enhanced operating voltage range of 8,5 V DC up
to 30 V DC and the two variants with 820 Ω alarm
resistor or 470 Ω alarm resistor enables the detector
application with nearly all conventional fire panels.
System overview
Operating mode
Detector type
FCP-
OC32
0
FCP-
OT32
0
FCP-
O320
FCH-
T320/
T320-
FSA
Combined
x
x
-
-
Optical (scattered light
measurement)
x
x
x
-
Thermal max.
-
x
-
x
Thermal differential
-
x
-
x
Chemical (gas
measurement)
x
-
-
-
Functions
The FCP-OC320 and FCP-OT320 Multisensor Detectors
each combine two detection principles. All sensor
signals are analyzed continually by the internal
evaluation electronics and are linked with each other.
If a signal combination fits the detector's programmed
code field, an alarm is automatically triggered. By
linking the sensors, the combined detectors can also
be used in places where work carried out gives rise to
light smoke, steam or dust.
Optical sensor (smoke sensor)
The optical sensor uses the scattered-light method.
An LED transmits light to the measuring chamber,
where it is absorbed by the labyrinth structure. In the
event of a fire, smoke enters the measuring chamber
and the smoke particles scatter the light from the LED.
The amount of light hitting the photo diode is
converted into a proportional electrical signal.
