Bosch 520 Series - Technical Data; Detector and Trim Ring Specifications

28 en | Technical Data Automatic Detectors LSN improved
2019.11 | 4.0 | F.01U.025.877 Operation Guide Bosch Sicherheitssysteme GmbH
6 Technical Data
6.1 Detector and Trim Ring
Detector type FAP-OC520 / FAP-OC520-P FAP-O520 / FAP-O520-P
Detection principle Combination of scattered light
and combustion gas
measurement
Scattered light measurement
Special features – Contamination detection
– Drift compensation in
optical and in gas
measuring unit
– Contamination detection
– Drift compensation in
optical unit
Address allocation Manual or automatic address setting via rotary switches
Operating voltage 15 to 33VDC
Current consumption 3.25mA
Individual display Two‑color LED: red/green
Alarm output By data word via two‑wire signal line
Indicator output Open collector, switches 0V over 1.5kΩ, max. 15mA
Response sensitivity:
– Ounit < 0.36dB/m (EN54-7) < 0.18dB/m (EN54-7)
– Gasunit in ppm-range -
Max. monitoring area 120m
2
(note local guidelines)
Maximum installation
height
16m (note local guidelines)
Minimum installation
height
Out of arm’s reach
Minimum distance to
lamps
50cm
Permitted air speed 20m/s
Permitted operating
temperature
-10°C to +50°C -20°C to +65°C
Permitted relative
humidity
<95% (non‑condensing)
Protection class as per
IEC60529
IP33 IP53
Dimensions:
– Detector without trim
ring
Ø113mm x55 mm (without base)/Ø113x70mm (with base)
– Detector with trim
ring
Ø150mm x55 mm (without base)/Ø150x70mm (with base)