Industrial Pressure Transmitter for Aggressive Media. The DMK 331 is a pressure transmitter for universal applications in the industry as well as for especially viscous, pasty or highly contaminated media. Basic element is a mechanical and chemical robust ceramic sensor. A variety of standard output signals as well as mechanical and electrical connections make the DMK 331 covering a wide field of applications. The customer has the possibility to use by highly contaminated media a semi-flush ceramic sensor with pressure port G . The version with PVDF pressure port is used for many aggressive media. The DMK 331 is suited for explosive area (zone 0).