Siemens FD20 Guideline

Aerosol generator (SG3000)
2.3 Duration of test
During this type of acceptance test fire the aerosol concentration increases
continuously. Normally the test is left to run until the detectors trigger an alarm. It
should, however, be taken into account that the maximum duration of aerosol
production by the device is limited to six minutes.
In order to provide a rough guide for the expected duration of the test, several tests
were performed in rooms with the dimensions 7x7x3m and 6x6x6m (LxWxH). The
following table shows the times at which the individual detectors triggered an alarm
at the various settings.
Detector Alarm actuation
Type Setting 7x7x3m room 6x6x6m room
5 / Suppression
3.0 min 5.5 min
2 / Robust 3.0 min 5.5 min
4 / Balanced 2.5 min 4.0 min
ASA Neuronal fire
detector
FDOOT241
6 / Fast Response 1.5 min 2.0 min
2 / Standard 3.0 min 5.5 min
DA Neuronal fire
detector
FDOOT221
4 / Standard plus 2.0 min 3.5 min
2 / Robust 2.5 min 6.0 min
1 / Universal 2.0 min 4.5 min
ASA Wide spectrum
smoke detector
FDO241
3 / Sensitive 1.5 min 3.0 min
2 / Standard 2.5 min 5.5 min
DA Wide spectrum
smoke detector
FDO221
3 / Standard plus 2.0 min 4.5 min
Linear smoke detector
FDL241
3 / Sensitive
1.5 min 3.0 min
Tab. 2 Triggering an alarm with the aerosol generator SG3000
Note:
During tests the SG3000 was positioned directly below the detectors. Additional
tests have shown that if the SG3000 is horizontally offset by 4m, the detectors
require twice as long to trigger an alarm. In the 6x6x6m room the detectors no
longer triggered an alarm with the settings Robust, Suppression and Standard with
an offset of 4m – they only achieved danger level 2.
9
Building Technologies 009977_b_en.doc
Fire Safety & Security Products 10.2007

Siemens FD20 Specifications

General

Brand	Siemens
Model	FD20
Category	Security Sensors
Language	English