Product Details

Endress Hauser Differential Pressure Transmitter System FMD77

Product Description

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

Pressure

Measuring Principle	Differential pressure
Characteristic	Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids.
Supply voltage	4...20 mA HART: 12...45V DC (Non Ex) Ex ia: 12...30V DC
Reference Accuracy	0.075% of individual sensor, "PLATINUM" 0.05% of individual sensor
Long term stability	0.05% of URL/year of individual sensor
Process temperature	–40...+125°C (–40...+257°F)
Ambient temperature	–40...+80°C (–40...+176°F)
Measuring cell	400 mbar...10 bar (6 psi...150psi)
Vacuum resistance	10 mbar abs.
Max. overpressure limit	160 bar (2400 psi)
Process connection	Threads Flange (DIN, ASME,JIS)
Hygienic	DIN11851 DIN11864-1 Tri-Clamp DRD Varivent
Material process membrane	316L, AlloyC,
Fill fluid	Silicone oil Synthetic oil
Material housing	Die-cast aluminum Stainless steel
Communication	4...20 mA HART
Certificates / Approvals	ATEX, FM, CSA, IECEx
Design approvals	NACE MR0175, EN10204-3.1,
Hygienic approvals	EHEDG 3A