This conventional, single-ended beam smoke detector is
easy to install – only one side needs to be wired.
Features
- Combined transmitter/receiver unit
- Wide 12° field of view
- Fast, easy, and intuitive beam alignment indicated by directional LED cross-hair arrows
- Long range coverage of 5-100 m (16-328 ft) is standard; no separate long-range kit required
- Highly resistant to building movement; tolerates +/- 1° movement
- Resistant to strong light sources; does not alarm when saturated by sunlight
- Resistant to solid object intrusion
- Automatic sensitivity threshold level setting
- 50° horizontal and 20° vertical beam adjustment
- Built-in imager heater is standard
- Remote test station capable for electronic simulated smoke test from ground level
- Standby, fault and alarm LED indicators visible from the front and bottom
- Automatic drift compensation
- Paintable housing/cover
- Removable plug-in terminal blocks
- Optional heater kit available for the reflector
OSI-R-SS is a 4-wire conventional reflector-type linear optical beam
smoke detector for use in fire alarm systems. The beam operates
primarily on the principle of light obscuration using an infrared
beam. Optical beam smoke detectors are uniquely suited to
protecting buildings with large open areas with high ceilings such
as a warehouse or atrium. The OSI-R-SS detector is a combined
transmitter/receiver unit that can be directly connected to a
conventional detector circuit.
Fast and Easy Alignment
Aligning the imager to the reflector is extremely intuitive, fast, and
accurate. Both the infrared transmitter and the CMOS imager are
contained in a moveable “eyeball” – an adjustable lens assembly
that can move +/- 20° in the vertical direction and 50° in the
horizontal direction.
Four LED arrows indicate the direction to move the lens, guiding the
user to find the imager’s perfect alignment with the reflector.
Once the optimum alignment is found, indicated by all green arrows,
the lens is locked with a slide lever. A paintable cover is then placed
over the front to secure the lever in locked position.
Resistant to Building Movement
The infrared transmitter and receiver imager generates a beam of
light towards a high-efficiency reflector. The reflector returns the
beam to the receiver where the received signal is analysed. The
change in the strength of the received signal when smoke enters
the area between the unit and the reflector is used to determine the
alarm condition. The receiver imager has a wide 12° field of view
that automatically tracks the reflector in case of building movement
or movement of its support structure. It is virtually impossible for
the receiver to lose sight of the reflector from its field of view without
structural damage being caused to the building. As a result of
this operation, OSI-R-SS is highly resistant to building movement,
eliminating the number one cause of false alarms and/or faults with
traditional beam detectors.
Resistant to Sunlight
Optical filtering, high-speed image acquisition and intelligent
software algorithms provide the OSI-R-SS system with higher levels
of stability and greater resistance to high level lighting variability. This
provides better resistance to sunlight in its field of view, helping to
prevent false alarms when saturated by sunlight, reflected sunlight or
any other very bright light sources. The worst-case scenario is for the
detector to go into a trouble condition unlike other traditional beam
detectors which go into alarm.
Resistant to Foreign Object Intrusion
Advanced smoke imaging techniques allow the detector to avoid
false alarms from partial and sudden blockage from foreign object
intrusion.
Time-saving Automatic Sensitivity Setting
Unique in the market, the sensitivity of the detector is selected and
set automatically at the optimum sensitivity based on the size of the
reflector measured in the field of view.
Drift Compensation
The detector incorporates automatic drift compensation, whereby the detector will adjust its detection thresholds in line with any long-term
signal reduction of the beam caused by dust or other contamination
of the optical surfaces.
Equipped with Built-in Imager Heater
The imager ships standard with an internal heating option to prevent
condensation on the optical surface. (External power supply
required.)
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