The SD505-AIS has responsive, yet high operational stability
for an extremely wide range of uses. The SD505-AIS can
be used in areas where early warning of trouble from
super-heated or flaming combustibles is expected.
The
detector features automatic compensation for contamination
and a simple detector sensitivity test procedure that
can be run from the panel or remotely (using the IntelliKnight
5590 or 5595 software with a Windows TM based computer).
Operation
The SD505-AIS ionization smoke detector has two chambers:
a sampling chamber and a reference chamber. Smoke or
invisible combustion gases can freely penetrate the
sampling chamber, but the reference chamber is virtually
closed to prevent easy entry. With both chambers ionized
by a single radioactive source, a very small current
flows. Presence of visible smoke or invisible gases
greatly influences the current flow in the sampling
chamber, changing the voltage ratio between the chambers.
This difference is amplified inside the detector. After
reaching the critical level, the detector triggers into
alarm.
The
SD505-AIS includes a status LED which blinks approximately
every 15 seconds, indicating that the head is communicating
with the loop. The status LED lights continuously during
the alarm period.
Features
- Low
profile, 2.25 inches, including base
- Simple
and reliable addressing without mechanical switches
- Automatic
compensation for sensor contamination
-
Built-in fire test feature
- Simple
detector sensitivity testing through the control
panel or remotely through a Windows based computer.
(5590 or 5595 software required for remote testing.)
- Adjustable
sensitivity
- Vandal-resistant
locking feature
- Field
cleanable
Specifications
Radioactive
Source: AM-241 .098mCi
Operating
Voltage: 17-41 VDC
Current
Consumption:
Standby: .55 mA
Alarm: .55 mA
Ambient
Temperature: 32°F to 122°F (0°C
to 50°C)
Mounting:
4” SQR, 4” OCT, Single gang mud ring
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