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PDF TGS826 Data sheet ( Hoja de datos )
| Número de pieza | TGS826 | |
| Descripción | Ammonia Detection | |
| Fabricantes | Figaro | |
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FIGARO
PRODUCT INFORMATION
TGS 826 - for the Detection of Ammonia
Features:
* High sensitivity to ammonia
* Quick response to low concentrations of
ammonia
* Uses simple electrical circuit
* Ceramic base resistant to severe
environment
Applications:
* Ammonia leak detection in refrigerators
* Ventilation control for the agricultural and
poultry industries
The sensing element of TGS826 is a metal oxide 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 TGS826 has high sensitivity to ammonia gas. The sensor can detect concen-
trations as low as 30ppm in the air and is ideally suited to critical safety-related
applications such as the detection of ammonia leaks in refrigeration systems and
ammonia detection in the agricultural field.
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 at 50ppm of ammonia
Sensitivity Characteristics:
10
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 50ppm of ammonia
at various temperatures/humidities
Ro = Sensor resistance at 50ppm of ammonia
at 20°C and 65% R.H.
Temperature/Humidity Dependency:
10.0
Air
Iso-butane
0%
1
Hydrogen
1.0
20%
40%
65%
Ammonia
RH%
100%
Ethanol
0.1
10
100
Concentration (ppm)
1000
0.1
-30 -20 -10 0
10 20 30 40 50
Ambient Temperature (°C)
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.
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet TGS826.PDF ] | |
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