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The Deltabar FMD78 differential pressure transmitter with metal sensor uses two capillary diaphragm seals. Typically used in process and hygiene applications for continuous measurement of pressure dif
The Deltabar FMD78 differential pressure transmitter with metal sensor uses two capillary diaphragm seals. Typically used in process and hygiene applications for continuous measurement of pressure differences in liquids, vapors, 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.
| Measuring Principle | Differential pressure |
| Characteristic | Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries |
| Modular transmitter | |
| Long-term stability | |
| Secondary process barrier | |
| enhanced safety via self diagnostic functions. | |
| Supply voltage | 4...20 mA HART |
| 10,5...45V DC (Non Ex): | |
| Ex ia: 10,5...30V DC | |
| PROFIBUS PA: | |
| 9...32 V DC (Non Ex) | |
| FOUNDATION Fieldbus: | |
| 9...32 V DC (Non Ex) | |
| Reference Accuracy | 0,075% + influence of diaphragm seal |
| Long term stability | 0,05% of URL/year |
| 0,125% of URL/5 years | |
| Process temperature | -70°C...400°C |
| (-94°F...752°F) | |
| Ambient temperature | -50°C...85°C |
| (-58°F...185°F) | |
| Measuring cell | 100 mbar...40 bar |
| (40 inH2O...600 psi) | |
| Smallest calibratable span | 5 mbar (0.075 psi) |
| Vacuum resistance | 50 mbar (0.73 psi) |
| Max. Turn down | 100:01:00 |
| Max. overpressure limit | 160 bar |
| (2400 psi) | |
| Process connection | Diaphragm seal (Pancake, threads) |
| Flanges (DIN, ASME) | |
| Hygienic connections | |
| Tri-Clamp ISO2852 | |
| Process connection hygienic | Tri-Clamp |
| DIN11851 | |
| NEUMO | |
| Varivent | |
| SMS | |
| DRD | |
| Universal adapter | |
| Material process membrane | 316L, AlloyC, |
| Tantal, | |
| Gold-Rhodium | |
| PTFE | |
| Material gasket | None, diaphragm seal welded |
| Fill fluid | Silicone oil, |
| Inert oil, | |
| Vegetable oil | |
| Low- temperature oil | |
| High- temperature oil | |
| Material housing | 316L, Die-cast aluminum |
| Communication | 4...20 mA HART |
| PROFIBUS PA | |
| FOUNDATION Fieldbus | |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI, EAC |
| Safety approvals | Overfill prevention WHG |
| SIL | |
| Design approvals | NACE MR0175 |
| EN10204-3.1 | |
| Hygienic approvals | 3A, FDA |
| Marine approvals | GL/ ABS |
| Specialities | Diagnostic functions |
| TempC Membrane |
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