Deltabar FMD78

Deltabar FMD78
  • V_030522

The Deltabar FMD78 differential pressure transmitter with internal welded metallic membranes and capillary diaphragm seals to the process is typically used in the process and hygiene industries for continuous measurement of pressure differences in liquids, vapours, gases and dusts. The integrated HistoROM data module makes the management of process and device parameters easy. Designed according to
IEC 61508 for use in SIL3 safety applications.


  • Overload-resistant and function-monitored
  • Very good reproducibility and long-term stability
  • HistoROM data backup for instrument settings and measured values; Modular design for dP and pressure platform, e.g. replaceable display, universal electronics
  • Developed and designed according to IEC 61508, approved for use in SIL3 safety applications (min., max., range)
  • Quick commissioning thanks to quick setup menu with extensive diagnostic functions
  • Easy and safe menu-guided product configuration: On-site via display module, 4 to 20mA with HART, PROFIBUS PA, or FOUNDATION Fieldbus
  • New TempC Membrane for diaphragm seals: Minimum temperature effects and short recovery times

Field of application

For differential pressure, level, volume or mass measurement in liquids.

  • Process connections: Wide range of diaphragm seals
  • Temperature: -20 to +85°C (-4 to +185°F)
  • Measuring range: +100mbar to +40bar (+1.5 to +600psi)
  • Accuracy: ±0.075%
  • ATEX, FM, CSA, NEPSI, TIIS, IEC Ex, GL, ABS, 3-A, SIL3, WHG overfill prevention

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