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TGS822 데이터시트 PDF




Figaro에서 제조한 전자 부품 TGS822은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 TGS822 기능
기능 detection of Organic Solvent Vapors
제조업체 Figaro
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TGS822 데이터시트, 핀배열, 회로
PRODUCT INFORMATION
TGS 822 - for the detection of Organic Solvent Vapors
Features:
* High sensitivity to organic solvent vapors
such as ethanol
* High stability and reliability over a long
period
* Long life and low cost
* Uses simple electrical circuit
Applications:
* Breath alcohol detectors
* Gas leak detectors/alarms
* Solvent detectors for factories, dry
cleaners, and semiconductor
The sensing element of Figaro gas sensors is a tin dioxide (SnO2) semiconductor
which has low conductivity in clean air. In the presence of a detectable gas, the
sensor's conductivity increases depending on the gas concentration in the air. A
simple electrical circuit can convert the change in conductivity to an output signal
which corresponds to the gas concentration.
The TGS 822 has high sensitivity to the vapors of organic solvents as well as other
volatile vapors. It also has sensitivity to a variety of combustible gases such as
carbon monoxide, making it a good general purpose sensor. Also available with a
ceramic base which is highly resistant to severe environments as high as 200°C
(model# TGS 823).
The figure below represents typical sensitivity characteristics,
all data having been gathered at standard test conditions (see
reverse side of this sheet). The Y-axis is indicated as sensor
resistance ratio (Rs/Ro) which is defined as follows:
Rs = Sensor resistance of displayed gases at
various concentrations
Ro = Sensor resistance in 300ppm ethanol
The figure below represents typical temperature and humidity
dependency characteristics. Again, the Y-axis is indicated as
sensor resistance ratio (Rs/Ro), defined as follows:
Rs = Sensor resistance at 300ppm of ethanol
at various temperatures/humidities
Ro = Sensor resistance at 300ppm of ethanol
at 20°C and 65% R.H.
Sensitivity Characteristics:
10
Temperature/Humidity Dependency:
10
Air
5
Rs/Ro
1
0.1
50
100
Acetone
500 1000
Concentration (ppm)
Methane
2
Rs/Ro 1
Carbon-
monoxide
Isobutane
.5
n-Hexane
Benzene
Ethanol
5000
0.1
-20 -10 0 10 20 30
Ambient Temperature (°C)
R.H.
35%
50%
65%
100%
40 50
IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY
RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET
GASES ARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HAS
NOT BEEN SPECIFICALLY TESTED BY FIGARO.
Free Datasheet http://www.Datasheet4U.com





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