Notifier FSL-751 User Manual

Fsl-751(a), General, Features

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DN-6886:C • 07/12/2012 — Page 1 of 2

FSL-751(A)

Very Intelligent Early Warning (VIEW®)
Laser Smoke Detector

Intelligent/Addressable Devices

DN-6886:C • H-113

General

The Notifier FSL-751 VIEW® Laser Detector is a revolutionary

advance in early warning smoke detection technology. The

unique design of this laser detector allows smoke detection

sensitivity that is up to 50 times higher than present photoelec-

tric technology, when combined with enhanced intelligent

sensing algorithms in the Notifier AFP-300, AFP-400, NFS-

640, NFS2-640, NFS-320, NFS-3030 or NFS2-3030 control

panels. Because of this high sensitivity, the FSL-751 can pro-

vide very early warning of slow smoldering fires. Its perfor-

mance is comparable to present aspiration technology, at a

substantially lower installed cost.
The FSL-751 uses an extremely bright laser diode, combined

with special lens and mirror optics (U.S. patent pending), to

achieve a signal-to-noise ratio that is much higher than tradi-

tional photoelectric sensors. In addition, the tightly focused

light beam, combined with the intelligent sensing algorithms,

allow the system to differentiate between dust and smoke par-

ticles. Because of this differentiation, the FSL-751 can be set

to extremely high sensitivity, yet can reject false signals

caused by larger airborne particles such as dust, lint, and

small insects.
The FSL-751 is an intelligent (analog/addressable) detector.

Using CLIP mode, up to 99 FSL-751 detectors may be

installed per loop. On FlashScan® systems (NFS-640/NFS2-

640/NFS-320/NFS-3030/NFS2-3030), up to 159 addresses

are available. The FSL-751 may be mixed in any combination

with other Notifier intelligent sensors on the same loop and is

quickly installed using the panel autoprogram feature. The

FSL-751 has dual bi-color LEDs, which blink green in normal

operation and illuminate steady red in alarm.
FlashScan® (U.S. Patent 5,539,389) is a communication pro-

tocol developed by Notifier for high speed communication

between analog intelligent devices. Intelligent devices commu-

nicate in a grouped fashion. If one of the devices within the

group has new information, the panel CPU stops the group poll

and concentrates on single points. The net effect is response

speed greater than five times that of other protocols.
Using the enhanced intelligent sensing algorithms, the intelli-

gent sensing system provides drift compensation (meeting UL

requirements as a calibrated sensitivity meter), maintenance

alert (3 levels), selection of 9 alarm levels and 9 pre-alarm lev-

els, and report of drift compensation used and recent peak val-

ues. The system includes a self-learn sensitivity adjustment to

set the pre-alarm level just above the peak levels sensed over

long periods of time for each detector’s actual environment.

The system includes multi-detector algorithms that permit one

sensor to consider readings from adjacent sensors to provide

faster detection of fires.

Features

• Very Intelligent Early Warning (VIEW®) smoke detection.
• Advanced laser light source and patented optical design.
• Sleek low-profile housing (1.66"/42.164 mm height).

Notifier Analog Addressable communications protocol pro-

vides extremely reliable operation proven in millions of world-

wide detector installations.
• Sensitivity:

0.03% to 1.00% for CLIP systems
0.02% to 2.00% for all other panels.

• Rotary, decimal addressing (1-99 on CLIP systems, 1-159

on FlashScan systems).

• Dual bi-color (red/green) LEDs flash green when Normal

and are steady red in Alarm.

• Compatible with the AFP-300, AFP-400, NFS-640, NFS2-

640, NFS-320, NFS-3030, and NFS2-3030 (all software

releases).

• Dual LED design provides 360° viewing angle.
• Built-in magnetic test switch, or automatic test commanded

from panel.

• Optional remote, single-gang LED accessory, RA100Z(A).
• Optional relay, isolator, or sounder bases.

Specifications

Relative Humidity: 10% – 93% noncondensing.
Operating temperature: 0° to 38°C (32° to 100°F).
Size: 2.0" (51 mm) high; base determines diameter.

– B210LP(A): 6.1" (15.5 cm) diameter.
– B501(A): 4.1" (10.4 cm) diameter.
– B200S(A): 6.875" (17.46 cm) diameter.
– B200SR(A): 6.875" (17.46 cm) diameter.
– B224RB(A): 6.2" (15.748 cm) diameter.

Shipping Weight: 5.4 oz. (153 g).

ELECTRICAL SPECIFICATIONS

Operating voltage range: 15 to 32 VDC peak.
Maximum average standby current: 230 μA @ 24 VDC (no

communication). 330 μA @ 24 VDC (one communication

every 5 seconds with LED blink enabled).
Maximum alarm current: 6.5 mA @ 24 VDC (LED “ON”).

FSL-751

(bases sold separately)

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