FIGARO PRODUCT INFORMATION TGS 831 - for the detection of Chlorofluorocarbons (CFC's) Features: * High sensitivity to R-21 and R-22 * Low dependency on temperature and humidity * Quick response * 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...

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