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參數(shù)資料
| 型號： | TGS821 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SPECIAL SENSOR FOR HYDROGEN GAS |
| 中文描述： | 特別傳感器的氫氣 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 113K |
| 代理商： | TGS821 |
FIGARO
PRODUCT INFORMATION
Applications:
Features:
TGS 821 -
Special Sensor for Hydrogen Gas
* High sensitivity and selectivity to hydrogen
gas
* Good repeatability in measurement and
excellent stability
* Uses simple electrical circuit
* Ceramic base resistant to severe
environment
* Hydrogen gas detection for:
- transformer maintenance
- batteries
- steel industry usage
- etc.
The sensing element of Figaro gas sensors s a tin dioxide (SnO
2
) 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 821
has high sensitivity and selectivity to hydrogen gas. The sensor
can detect concentrations as low as 50ppm, making it ideal for a variety of
industrial applications.
The figure below represents typical sensitivity char-
acteristics, 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 at 100ppm of hydrogen
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 100ppm of hydrogen
at various temperatures/humidities
Ro = Sensor resistance at 100ppm of hydrogen
at 20
°
C and 65% R.H.
Temperature/Humidity Dependency:
Sensitivity Characteristics:
0.01
0.1
1
10
100
10
100
Concentration (ppm)
1000
10000
R
Air
Methane
Ethanol
Carbon monoxide
Hydrogen
0.5
0.6
0.7
0.8
0.9
1
2
-20
-10
0
10
20
30
40
50
R
Ambient Temperature (°C)
3
R.H.
35%
65%
95%
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.
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| TH10 | Thermal Cut-out |
| TH63 | CONTAORE MINIATURIZZATO |
| TH64 | MINIATURE POWER RELAY |
| TH71071 | 315/433MHz ASK Transmitter / LO Source |
| TH7108 | 868/915MHz ASK Transmitter / LO Source |
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