H2Scan

Based on a technology developed at Sandia National Laboratory, the H2Scan system is a solid-state solution that detects concentrations of hydrogen gas, at concentrations from 10 ppm to 100%, with or without oxygen present. Available in a portable model, the sensor contains a thin film of a palladium-nickel (Pd/Ni) resistor deposited on a silicon substrate that changes resistance in the presence of hydrogen. The lattice inherent in the Pd/Ni absorbs hydrogen molecules. As the number of hydrogen molecules in the lattice increases, the resistance of the Pd/Ni increases in direct correlation. H2scan systems interpret this change in resistance and display the hydrogen concentration to the operator, while also generating an analog signal that can be sent to external monitoring systems. The instrument is 13.6 in. long, 2.9 in. wide, 1.7 in. deep and weighs 1.7 lb.