Extrima Hydrogen Leak Detector Extrima Leak Detector is the world’s first intrinsically safe leak detector using hydrogen tracer gas, designed for leak detection in the toughest of environments, including explosion hazardous areas. Extrima fulfills the ATEX directive for use in Zone 0 – ATEX Classification Ex ia, IIC T3. Additional Ex-certificates are IECEx, CSA and NEPSI. Portable (4,5 kg), water protected (IP67) and with 7 hours battery capacity, Extrima can be applied in the chemical, petrochemical, aviation and petroleum industries.