Endress+Hauser’s M Class Deltabar M PMD55 transmitter and the Cerabar line of pressure transmitters have ATEX, FM, CSA, NEPSI and IEC Ex certifications for use in hazardous areas. The Deltapilot M has ATEX, FM, CSA, Drinking water (NSF, KTW and ACS), as well as NACE approvals. The M-Class transmitters are designed to make it easier for legacy plants to upgrade to digital communications systems such as HART and WirelessHART. It can be difficult for a plant to upgrade all its transmitters at one time, but the M-Class allows users to install instruments on an as-needed basis. M-Class transmitters have a 4-20mA two-wire analog output with superimposed HART 6.0 digital communications. Remote operation is available via a HART Field Communicator handheld terminal or the wireless Field Xpert PDA with an integrated 3.5-in. touchscreen. The transmitters can also be configured with Endress+Hauser’s FieldCare asset management tool, based on FDT technology.