Circuit diagrams and schematics - Electronic projects

Catalytic bead sensors are used primarily to detect combustible gases. They have been in use for more than 50 years. Initially, these sensors were used for monitoring gas in coal mines, where they replaced canaries that had been used for a long period of time. Read more original source: http://www.intlsensor.com/pdf/catalyticbead.pdf

The article describes the home combustible gas detector. Main motivation for this construction was my 3 years old son who has very “positive” relationship with the home hardware. Of course, nice buttons on the gas cooker are very interesting for him and he can hear nice hiss of the gas. The first situation like this [...]