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6424
7260-1209:141
S911
CS308
0V6A1.AY
MEA
427-91-E
GENERAL
The
System Sensor
Model
6424
Beam Detector is ideal
to meet the unique fire protection challenge of atriums and
other open areas with high ceilings.
The System Sensor Model 6424 Beam Detector is de-
signed for four-wire, 24 VDC applications.
This stylish, two-component infrared detector consists of a
separate transmitter and receiver. Together they can
protect a linear distance from 30' to 330'. Multiple units
spaced between 30 and 60 feet apart can be used to
cover larger areas. If 95% or more of the beam is blocked,
a trouble condition is signaled. This blockage must be
removed before the unit can reset itself and return to
normal.
FEATURES
Unique LED alignment technique makes setup fast and
easy.
Four LEDs on the front of the receiver provide positive
visual indication of maximum signal strength.
No special meters or alignment tools are necessary.
Receiver and transmitter can be powered separately or
together.
Detects a broad range of fires.
Ceiling and wall mount brackets included.
Calibrated test filters included.
Form A (Alarm) and B (Trouble) contacts.
Remote test station option.
Three-year warranty.
APPLICATIONS
The System Sensor Model 6424 Beam Detector is particu-
larly well suited for use in atriums, ballrooms, churches,
warehouses, museums, factories, and other large or high-
ceiling areas where conventional smoke detectors cannot
be easily installed.
CONSTRUCTION & OPERATION
The two-component System Sensor Model 6424 detector
consists of a separate infrared transmitter and receiver.
The units mount on opposite walls or on the ceiling across
from each other and are designed to detect any smoke in
a linear distance from 30' to 330'. Since both absorption
and scattering of the beams infrared light is detected as a
reduction in signal, the System Sensor Model 6424 works
well on both smoldering and fast-flaming fires.
System Sensors unique LED alignment technique as-
sures the fast and easy setup. No special meters or
alignment tools are necessary. Four LEDs on the front of
the receiver provide all the help needed to lock transmitter
and receiver together for maximum signal strength and
protection.
A built-in automatic gain control compensates for the grad-
ual deterioration of signal strength from dust accumula-
tion, component aging and temperature fluctuations. The
receiver and transmitter can be powered separately or
together for maximum flexibility in installation. Sensitivity
selectable at 30% or 55% Total Obscuration. There is
also a choice of test filters to allow convenient checking of
detector sensitivity under varying conditions. Operating
temperature range is -22°F to 131°F (-30°C to 55°C). For
further information, see Guide for Proper Use of Beam
Smoke Detectors, document I56-506-00.
PRODUCT LINE INFORMATION
Model
Description
6424
Projected Beam Smoke Detector.
RTS451
Remote Test Station.
RA400Z
Remote Annunciator.
A77-716B
End-of-Line Relay, 24 VDC.
California
State Fire
Marshal
F-700
June 13, 1997
Section: Conventional Initiating Devices
6424
Projected Beam Smoke Detector
ISO-9001
Engineering and Manufacturing
Quality System Certified to
International Standard ISO-9001
Made in the U.S.A.
This document is not intended to be used for installation purposes. We try to keep our
product information up-to-date and accurate. We cannot cover all specific applications or
anticipate all requirements. All specifications are subject to change without notice. For
more information, contact
FireLite.
Phone: (203) 484-7161 FAX: (203) 484-7118
12 Clintonville Road, Northford, Connecticut 06472
Technical Manuals Online! - http://www.tech-man.com
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