Bosch FCP‑320 Specifications

Fire Alarm Systems | FCP‑320/FCH‑320 Conventional Automatic Fire Detectors
FCP‑320/FCH‑320 Conventional Automatic
Fire Detectors
www.boschsecurity.com
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
FCP-
OC32
0
Combined
Optical (scattered light
measurement)
Thermal max.
Detector type
FCP- FCP- FCH-
OT32 O320 T320/
0 T320-
FSA
x x - -
x x x -
- x - x
High reliability of detection thanks to evaluation
u
electronics
Active adjustment of the threshold (drift
u
compensation) if the optical sensor becomes dirty
Activation of a remote external detector alarm
u
display possible
Mechanical removal lock
u
(can be activated/deactivated)
Dust-repellent labyrinth and cap construction
u
Thermal differential -
Chemical (gas x
measurement)
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.
x - x
- - -