The following content is an automatically extracted verbatim text
from the original manufacturer datasheet and is provided for reference purposes only.
View original datasheet text
www.DataSheet4U.net
FIGARO
PRODUCT INFORMATION
TGS 821 - Special Sensor for Hydrogen Gas
Features:
* High sensitivity and selectivity to hydrogen gas * Good repeatability in measurement and excellent stability * Uses simple electrical circuit * Ceramic base resistant to severe environment
Applications:
* Hydrogen gas detection for: - transformer maintenance - batteries - steel industry usage - etc.
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.
TGS821 Datasheet
