FMD78 Differential pressure Deltabar transmitter

Product Item : FMD78-ABA7F31TD2BA
Category： Pressure
Measuring Principle:Differential pressure
Characteristic / Application:Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries Modular transmitter Long term stability Enhanced safety via self diagnostic function
Pressure measuring range:100mbar...40bar (1.5psi ... 600 psi)
Process connection:Diaphragm seal (Pancakes, threads) Flanges (DIN, ASME) Tri-Clamp ISO2852 Hygienic connections
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Differential pressure Deltabar FMD78

Differential pressure transmitter with two diaphragm seals for differential pressure and level

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, 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.

Benefits

Large variety of different process connections and membrane materials
New TempC Membrane for diaphragm seals: Minimum temperature effects and short recovery times
Highest safety due to gastight feedthrough with capabilities up to SIL2/3, certified to IEC 61508
Easy menu-guided commissioning via local display, 4 to 20 mA with HART, PROFIBUS PA, FOUNDATION Fieldbus
HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
Cost savings with modular concept for easy replacement of sensor, display or electronics
Seamless and independent system integration (HART/PA/FF)

Field of application

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

Process connections: Threads, flanges, pancake and hygienic connections
Process temperature: -70 up to +400°C (-94 to +752°F)
Measuring ranges: 100mbar to +16bar (1.5 to 240psi);
Accuracy: ±0.075%
International explosion protection certificates, overfill prevention WHG, hygienic approvals, marine approvals, SIL

Features and specifications

Continuous / Liquids Level measurement

Measuring Principle	Differential pressure
Characteristic / Application	Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries Modular transmitter Long term stability Enhanced safety via self diagnostic functions Secondary process barrier
Supply / Communication	4...20 mA HART: 10,5...45V DC Ex ia: 10,5...30V DC PROFIBUS PA / FOUDATION Fieldbus: 9...32V DC
Accuracy	0,075% + influence of diaphragm seal
Long term stability	0,05% of URL/year
Ambient temperature	-40°C...85°C (-40°F...185°F)
Process temperature	-40°C...400°C (-40°F...662°F)
Process pressure absolute / max. overpressure limit	160bar (2400 psi)
Pressure measuring range	100mbar...40bar (1.5psi ... 600 psi)
Main wetted parts	Alloy C276 316L Monel Tantalum
Process connection	Diaphragm seal (Pancakes, threads) Flanges (DIN, ASME) Tri-Clamp ISO2852 Hygienic connections
Process connection hygienic	Tri-Clamp DIN11851 NEUMO Varivent SMS DRD Universal adapter
Max. measurement distance	400m (1312ft) H2O
Output	4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus
Certificates / Approvals	ATEX, FM, CSA, CSA C/US, IECEx, NEPSI, INMETRO SIL NACE Marine WHG/ Overfill prevention EN10204-3.1 3A
Options	HistoROM/M-Dat 4-line digital display SS- or Aluminiumhousing Separate housing
Specialities	TempC membrane
Application limits	Measuring cell: Metal welded

Pressure measurement

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...20mA 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	-40°C...85°C (-40°F...185°F)
Measuring cell	100mbar...40bar (40inH2O...600psi)
Smallest calibratable span	5 mbar (0.075 psi)
Vacuum resistance	50 mbar (7.25psi)
Max. Turn down	100:1
Max. overpressure limit	160bar (2400psi)
Process connection	Diaphragm seal (Pancake, threads) Flanges (DIN, ASME) Hygienic connections Tri-Clamp ISO2852
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
Output	4...20mA HART PROFIBUS PA FOUNDATION Fieldbus
Certificates / Approvals	ATEX, FM, CSA, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI SIL NACE GL/ ABS Marine WHG/ Overfill prevention EN10204-3.1 3A,FDA
Options	HistoROM/M-Dat 4-line digital display SS- or Aluminium housing Separate housing
Specialities	Diagnostic functions TempC Membrane