Semiconductor hydrogen (H2) sensor Figaro Engineering

TGS821 Semiconductor type
Figaro semiconductor type sensor TGS821 has high sensitivity to low concentrations of hydrogen. Even at 100ppm of hydrogen, the sensor can detect the target gas with good repeatability and long term stability. Figaro's unique sensor technology makes this sensor highly selective to hydrogen. TGS821 utilizes a durable ceramic housing that makes it ideal for industrial applications which involve transformer maintenance or usage of batteries. This sensor is also appropriate for checking gas leakage within a fuel cell system.

TGS6812 Catalytic type
Figaro's catalytic type sensor TGS6812 can detect levels of hydrogen up to 100%LEL. This sensor features high accuracy, good durability and stability, quick response, and linear output. This sensor can detect not only hydrogen but also methane and LP gas, making it an excellent solution for monitoring gas leakage from stationary fuel cell systems which use hydrogen that is transformed by combustible gases. Due to an adsorbent inside its sensor cap, the cross sensitivity of TGS6812 to alcohol is much smaller than can be found in traditional catalytic type sensors. In addition, TGS6812 is more durable against silicone compounds than the traditional catalytic type sensors.

More specifications...