FMD77 Differential pressure Deltabar transmitter

Product Item : FMD77-ABA7H22FBAAA
Category： Pressure
Measuring Principle:Differential pressure
Characteristic / Application:Digital transmitter with metallic measuring diaphragms one side with diaphragm seal Modular transmitter Long term stability Enhanced safety via self diagnostic functions S
Main wetted parts:Alloy C276 316L Monel Tantalum
Communication:4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus
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Differential pressure Deltabar FMD77

Differential pressure transmitter with one diaphragm seal for level measurement

The Deltabar FMD77 differential pressure transmitter with metal sensor uses a one-sided diaphragm seal or diaphragm seals on both sides with a capillary on the low pressure side. Typically used in the process industry for continuous level measurement in liquids. 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
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 level, volume or mass measurement in liquids.

Process connections: Threads and flanges
Temperature: -70 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

Measuring Principle	Differential pressure
Characteristic / Application	Digital transmitter with metallic measuring diaphragms one side with diaphragm seal 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 / FOUNDATION 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...752°F)
Process pressure absolute / max. overpressure limit	160bar (2400 psi)
Pressure measuring range	100mbar...16bar (1.5psi...230 psi)
Main wetted parts	Alloy C276 316L Monel Tantalum
Process connection	Low pressure side: 1/4-18NPT RC1/4" High pressure side: Flanges (DIN, ASME, JIS)
Max. measurement distance	160m (525ft) H2O
Communication	4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus
Certificates / Approvals	ATEX, FM, CSA, CSA C/US, IECEx, NEPSI, INMETRO SIL NACE WHG/ Overfill prevention EN10204-3.1

Pressure

Measuring Principle	Differential pressure
Characteristic	Digital transmitter with metallic measuring diaphragms, one side with diaphragm seal Modular transmitter Long-term stability Secondary process barrier enhanced saftey 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	-40°C...400°C (-40°F...752°F)
Ambient temperature	-40°C...85°C (-40°F...185°F)
Measuring cell	100mbar...16 bar (40 inH20...240psi)
Smallest calibratable span	5 mbar (0.075 psi)
Vacuum resistance	50 mbar (7.25psi)
Max. Turn down	100:1
Max. overpressure limit	160bar (2400 psi)
Process connection	Low pressure side: 1/4-18NPT RC1/4" High pressure side: Flanges (DIN, ASME, JIS)
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...20mA HART PROFIBUS PA FOUNDATION Fieldbus
Certificates / Approvals	ATEX, FM, CSA, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI
Safety approvals	SIL WHG/ Overfill prevention
Design approvals	NACE MR0175 EN10204-3.1
Specialities	Diagnostic functions