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ETC

DS-SD-003 Datasheet Preview

DS-SD-003 Datasheet

IONIZATION SOMKE CHAMBER

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연기감지기 모듈(아나로그 출력형)
MODEL : DC-SD-003
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상세설명
- 검지원리 : 이온화식(IONIZATION SOMKE CHAMBER)
- 검지범위 : 0.3 ~ 5 % / foot (저방사능)
- 응답속도 : 3초이내
- 동작전원: 9V BATTERY/아답터
- 경보방식:75dB 부저음
- 센서출력 : 아나로그 출력(0~5.5V)
- 시스템초기화시간 : 10초이내
- 사용온도 : -20℃~50℃
- 사용습도 : 0~95%R.H(NON-CONDENSING)
- 외부재질 : MONITORING UNIT-METAL, SENSOR UNIT-ALUMINUM
미세한 연기까지 측정하여 농도값을 정확하게 전달한다.
- 사용처 : 화학단지, 2차 충방전지, 학교, 금연구역, 화재지역.휴대용 연기 검지기,
화재경보기, 공기정화기범용형 ,빌딩내화장실등
- 영문 제품명 : Ionization Smoke Chamber
- 제조 회사 : Nemoto & Co., Ltd. (일본)
* foot는 감광율을 나타내는 단위
- 전용 IC가 판매되고 있을 정도로 미국을 비롯한 선진 외국에서 폭넓게 사용되고 있는
감도가 우수한 화재 담배 연기 감지용 센서입니다. 이 연기센서에는 별도로 개발된
전용 IC가 있어서 이 IC를 사용하면 간단하게 회로를 구성할 수 있습니다.
센서와 함께 이 전용 IC도 공급하고 있습니다.
대신전자




ETC

DS-SD-003 Datasheet Preview

DS-SD-003 Datasheet

IONIZATION SOMKE CHAMBER

No Preview Available !

5348
SMOKE DETECTOR
with INTERCONNECT
and TIMER
www.DataSheet4U.com
Sensitivity Adjust. The detector sensitiv-
ity to smoke is set internally by a voltage
divider connected between VDD and VSS. The
sensitivity can be externally adjusted to the
individual characteristics of the ionization
chamber by connecting a resistor between pin
13 and VDD, or between pin 13 and VSS.
Low Battery. The low battery threshold is
set internally by a voltage divider connected
between VDD and VSS. The threshold can be
increased by connecting a resistor between
pin 3 and VDD. The threshold can be de-
creased by connecting a resistor between pin
3 and VSS. The battery voltage level is
checked every 40 seconds during the 10 mA,
10 ms LED pulse. If an LED is not used, it
should be replaced with an equivalent resistor
(typically 500 to 1000 ) such that the
battery loading remains at 10 mA.
Timer. An internal timer is provided that
can be used in various configurations to allow
for a period of reduced smoke detector
sensitivity (“hush”). When a high-to-low
transition occurs at pin 1, the internal timer is
reset, the timer mode enabled, and the circuit
reset to a no alarm condition. The LED will
flash at a 10 second rate. If the level of
smoke is increased such that the reduced
sensitivity level is reached, the device will go
into the alarm condition. The timer, how-
ever, will continue to completion of the
nominal 10-1/4 minute period (368 clock
cycles). If the timer mode is not used, pin 1
should be tied low.
I/O. A connection is provided at pin 2 to
allow multiple smoke detectors to be
commoned. If any single unit detects smoke
(I/O is driven high), all connected units will
sound their associated horns after a nominal 3
second delay. The LED is suppressed when
an alarm is signaled from an interconnected
unit.
TYPICAL APPLICATION
9V
TIMER
MODE
200 k
TO
OTHER
UNITS
200
1
2
NOTE
3
330
3
4
5
LOGIC
OSC. &
TIMING
8.2 M
6 V DD
7
HORN
DRIVER
1 µF
8
16
15
14
13
12
11
10
V SS 9
0.1 µF
NOTE 2
PUSH
TO
TEST
NOTE
1
0.001 µF
Dwg. EC-005A
NOTE 1:Use an external resistor to adjust sensitivity for a particular
smoke chamber.
NOTE 2:Select resistor to reduce sensitivity during timer mode.
NOTE 3:A resistor to ground or VDD may be added to this pin to modify
low battery voltage threshold.
Testing. On power up, all internal counters are reset. Internal test
circuitry allows for low battery check by holding pins 8 and 12 low
during power up, then reducing VDD and monitoring HORN1 (pin 10).
All functional tests can be accelerated by driving pin 12 with a 2 kHz
square wave. The 10 ms strobe period must be maintained for proper
operation of the comparator circuitry.


Part Number DS-SD-003
Description IONIZATION SOMKE CHAMBER
Maker ETC
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