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PDF TGS832 Data sheet ( Hoja de datos )
| Número de pieza | TGS832 | |
| Descripción | Sensor | |
| Fabricantes | Figaro | |
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PRODUCT INFORMATION
TGS 832 - for the detection of Chlorofluorocarbons (CFC's)
Features:
* High sensitivity to R-134a
* Quick response to R-134a
* Improved selectivity
* Long term stability
* Uses simple electrical circuit
* Ceramic base resistant to severe
environment
Applications:
* Refrigerant leak detector
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 832 has high sensitivity to R-134a, the most promising alternative to R-
12, commonly used in air conditioning systems and refrigerators. R-12 and R-22
are also detectable by TGS 832. With its good long term stability, TGS 832 is an
excellent, low-cost sensor for CFC detection.
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 100ppm of R-134a
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 R-134a
at various temperatures/humidities
Ro = Sensor resistance at 100ppm of R-134a
at 20°C and 65% R.H.
Sensitivity Characteristics:
5
1
0.5
Rs/Ro
0.1
.05
Temperature/Humidity Dependency:
Air
2.0
1.2
R-12 Rs/Ro
R-134a
1.0
Ethanol
40% R.H.
65% R.H.
100% R.H.
R-22
0.01 10 30 50 100 300 500 1000 3000
Concentration (ppm)
0.5
-10 0
10 20 30 40 50 60
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 2 Páginas | |
| PDF Descargar | [ Datasheet TGS832.PDF ] | |
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