Glass Break Sensor (Gb843) - Marmitek PROGUARD 800 Installation Manual

Glass break Sensor (GB843)

The GB843 is an intelligent acoustic glass break sensor with an incorporated wireless
transmitter.
Mounting Considerations
The GB843 acoustic sensor is omni-
directional, providing 360º coverage.
The coverage is measured from the
sensor to the point on the glass
farthest from the sensor. The sensor
can be mounted as close as 1m from
the glass.
Sensor range:
x
If mounting on the ceiling, the opposite wall or adjoining walls, the
maximum range is 6m for plate, tempered, laminated and wired glass.
x
For armor-coated glass, the maximum range is 3.65m.
Minimum recommended glass size:
x
0.3m x 0.6m
Glass thickness:
x
Plate: 2.4mm to 6.4mm
x
Tempered: 3.2mm to 6.4mm
x
Wired: 6.4mm
x
Laminated: 3.2mm to 6.4mm
For best detection:
x
The sensor must always be in direct line of sight of all windows to be
protected.
x
If mounting on the wall, try to install the sensor directly opposite the
protected window. If this is not possible, adjoining side walls are also a
good location.
x
If mounting on the ceiling, install the sensor 2-3m into the room.
x
Avoid installing in rooms with lined, insulating or sound deadening
drapes.
x
Avoid installing in rooms with closed wooden window shutters inside.
x
Avoid installing in the corners of a room.
The GB843 is best suited to rooms with moderate noise.
1
The sensor may not consistently detect cracks in the glass, bullets which break through the glass or
glass breaking around corners and in other rooms. Glass break sensors should always be backed up
by interior protection.
For best false alarm immunity:
x
Locate the sensor at least 1.2m away from noise sources (televisions,
speakers, sinks, doors, etc.).
x
Avoid rooms smaller than 3m x 3m and rooms with multiple noise
sources.
x
Do not use where white noise, such as air compressor noise, is
present (a blast of compressed air may cause a false alarm).
ProGuard800™
Figure B.6: Acoustic Sensor Range Measurement
(plate, tempered, laminated and wired glass)
-99-