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Figaro - Sensor

Numéro de référence TGS830
Description Sensor
Fabricant Figaro 
Logo Figaro 





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TGS830 fiche technique
PRODUCT INFORMATION
TGS 830 - for the detection of Chlorofluorocarbons (CFC's)
Features:
* High sensitivity to R-113,
R-22, R-11, and R-12
* Low sensitivity to hydrogen and alcohol
vapors
* Uses simple electrical circuit
* Ceramic base resistant to severe
environment
Applications:
* Refrigerant leak detectors
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 830 has high sensitivity to R-22 as well as to R-11, R-12, and R-113. Due
to its low sensitivity to hydrogen and alcohol vapors, the sensor can achieve good
selectivity. Combined with its long life, this makes TGS 830 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 1000ppm of R-22
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 1000ppm of R-22
at various temperatures/humidities
Ro = Sensor resistance at 1000ppm of R-22
at 20°C and 65% R.H.
Sensitivity Characteristics:
10
Rs/Ro
1
Air
Ethanol
R-12
R-11
R-113
Temperature/Humidity Dependency:
3
2
Rs/Ro1
R.H.
100%
65%
35%
R-22
0.5
0.1
100
1000
Concentration (ppm)
10000
-20
0 20 40
Ambient Temperature (°C)
60
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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