For a wide concentration range: 0.1vol% to 2.0vol% High reliability, selectivity, small effect from humidity and quick response speed. The SB-42A-11 is a bead type semiconductor hydrogen sensor which has excellent features for hydrogen leak detection. The sensor design is based on the proven technology in the gas leak detection industry (for CO, CH4 and other gases) and has achieved a reliable detection of high concentration level of hydrogen above 1vol% in air.
Structure
Gas sensitive semiconductor material is a mini bead type and a heater coil and electrode wire are embedded in the element. The sensing element is installed in the metal housing which uses double stainless steel mesh (100 mesh) in the path of gas flow. This sensor unit is placed in an external housing which contains active charcoal filter.
