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8 en | Technical Specifications Aspirating Smoke Detector
2018.04 | 2.0 | F.01U.130.926 Operation Guide Bosch Sicherheitssysteme GmbH
3 Technical Specifications
3.1 Product Description
Aspirating smoke detectors from the FCS-320 series are active fire detection devices that are
connected directly to conventional lines for early smoke and fire detection. They are used for
room and equipment protection as well as for monitoring air-conditioning units or ducts.
Variants
The FCS-320‑TP1 and FCS-320‑TP2 models feature LED displays indicating operating mode,
malfunction and alarm (the FCS-320‑TP2 has two alarm displays). The FCS-320‑TT1 and
FCS-320‑TT2 models offer differentiated alarm displays (info, pre and main alarm) as well as a
10-level smoke display (on the FCS-320‑TT2, all alarm and smoke level displays are doubled).
The FCS-320‑TP1 and FCS-320‑TT1 variants are each fitted with a detector module.
Both FCS-320‑TP2 and FCS-320‑TT2 have two integrated detector modules each. Two
aspiration pipes can be connected, enabling two areas to be monitored. This effectively
doubles the monitoring area.
Dual-detector dependency
The use of two detector modules in variants FCS-320-TP2 and FCS-320-TT2 also enables a
dual-detector dependency to be realized. This means that one area can be monitored by two
pipe systems.
Two alarm stages
Alternatively, the FCS-320-TP2 and FCS-320-TT2 can have two alarm stages configured. A pipe
system is connected via a pipe adapter on two detector modules. Selecting different response
sensitivities for the detector modules enables the time-staggered triggering of two main
alarms.
Sensitivity
Three detector module versions are available for the FCS-320 aspirating smoke detector
series:
–
DM‑TP‑50(80) with a response sensitivity of up to 0.5%/m (0.8%/m) light obscuration
– DM‑TP‑10(25) with a response sensitivity of up to 0.1%/m (0.25%/m) light obscuration
– DM‑TP‑01(05) with a response sensitivity of up to 0.015%/m (0.05%/m) light obscuration.
Depending on the detector module used, the FCS-320‑TT1 and FCS-320‑TT2 models can
achieve a resolution ten times higher for displaying up to 0.05%/m (0.08%/m), 0.01%/m
(0.025%/m) or 0.0015%/m (0.005%/m) light obscuration.
Notice!
The sensitivity value is based on measurements with standard test fires (old value in
brackets).
The new High-Power-Light-Source technology permits a broad detection spectrum over all
standardized fires.
LOGIC×SENS
The intelligent signal processing LOGIC· SENS distinguishes between deception variables and
fire events in order to prevent false alarms.
Reliable airflow monitoring
Analogous to point-type smoke detectors, which are monitored electronically for wire breaks
and short-circuits, highly sensitive and dependable airflow monitoring is required for smoke
aspiration systems. The airflow sensors used in the FCS-320 series reliably detect
malfunctions such as pipe breakage or obstructions in the air sampling openings.
Airflow monitoring is temperature-compensated and can be set depending on the air pressure.