Longsin LS-828-27 Manual

Manual of standalone
photoelectric smoke detector
LS-828- 27
T h a n k y o u f o r u s i n g L o n g s i n 's s t a n d a l o n e p h o t o e l e c t r i c s m o k e
detector.Please thoroughly read this manual before using the product to make
sure the proper installation and avoid the damage on the product or other
accidents causing by the misoperation.
Please keep this manual for the daily use.
I. Overview
Standalone photoelectric smoke detector (hereinafter referred to as detector
) use high-performance ultra-low power consumption smart microprocessor
working with the
precise photoelectric sensor to process the collecting smoke concentration
independently:Low-power consumption , stable performance, beautiful and
durable casing. The smoke detector is powered by 1pc 3V CR17335 lithium
battery, continuous for more than 10 years.This detector is widely used in internet
bars, dancing halls, cafes, leisure rooms, residential areas etc.
The detector is not suitable in the following locations:
·There is smoke under the normal circumstances.
. The place is dusty,misty,greasy or have corrosive gas.
· The relative humidity is more than 95% or the place is extremely cold or
extremely hot.
·The ventilating speed is more than 5m /s
II.Working principle
The detector adopts the principle of infrared light scattering to detect the
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smoke.the infrared emitting tube and the receiving tube are installed on the
smoke chamber at an angle. Under the smoke-free environment, the infrared
receiver tube can hardly receive the signal from the infrared emitting tube. when
there is a fire ,the smoke will come into the chamber.
Since the response of the smoke to the infrared light scattering effect,the
infrared receiver tube can receive a weak signal amplied by the amplier,then the
smart micro processor will identify the threshold level.when arrives or exceeds
the threshold level,the buzzer will emit a alarm sound .
III.Technical parameters
Power supply: 1PC 3V Cr17335 lithium battery
Alarm sound pressure: 80dB at 3m straight ahead
Battery life: 10 years
Working environment: -10 ℃ ~ 50 ℃, <95% RH (no condensation)
Output method: sound and flash
Performance standard: GB20517-2006
IV.Dimension
80mm
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V. Installation and adjustment
Installation environment: For the general places,the height is below 6m,the
protection areas is 60m ². The alarm should be installed on the ceiling. The speci
c parameters should be based on the (GB50116-2013) Code for Design of
Automatic Fire Alarm System.
80mm
80mm
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