For Hazardous Area applications where the Dewpoint Hygrometer is located in the Hazardous Zone, the Exd enclosure is required. The GUBH Flameproof Enclosure (type “d”) Ex II 2 G D is flameproof to ATEX and IECEx Certification for use in potentially explosive atmospheres. The Exd enclosure can accommodate either the DS1200 Dewpoint Hygrometer or DS4000 Dewpoint Hygrometer and the specified Signal Isolator. Hazardous Area applications require special treatment and individual certification; please consult our experienced technical team at the earliest stage of your project.