H2Scan is a company that was spun out of research at a university in California. They have a patented hydrogen specific semiconductor sensor. The advantages of their semiconductor sensor are that it doesn’t have cross sensitivity to some common gases that can cause cross-sensitivity, carbon monoxide in particular, as well as hydrocarbons and helium.
The semiconductor sensor can be tuned to measure anywhere from the low ppm range all the way up 2 percent by volume. It is a very long-life sensor – typical sensor life is ten plus years. The sensors have very little to no drift. Oxygen is not required for the measurements (unlike a catalytic sensors that need a minimum of 12-14% oxygen to accurately measure hydrogen).
We have both explosion proof an intrinsically safe options, and we have versions that are designed to measure hydrogen when it’s normally present, and versions to measure hydrogen when it shouldn’t be present (when there’s a link or problem with a process). The systems also can be packaged to be either intrinsically safe or explosion proof, and calibration is just once a year. They have a very reliable, very unique hydrogen sensor. It’s the only technology they produce so they very much are specialists in hydrogen measurement.
