Endress+Hauser Electronic differential pressure Deltabar FMD72

Electronic differential pressure system utilizing two metal sensor modules and one transmitter

Category: E+H

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Description

Electronic differential pressure system utilizing two metal sensor modules and one transmitter

Specifications

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°C…+85°C (-40°F…+185°F)
Measuring cell	400 mbar…10 bar (6 psi…150psi)
Smallest calibratable span	10 mbar (0.15 psi)
Vacuum resistance	160 bar (2400 psi)
Process connection	Threads Flange (DIN, ASME,JIS)
Process connection hygienic	DIN11851 DIN11864-1 Tri-Clamp DRD Varivent
Material process membrane	316L, AlloyC
Material gasket	None, measuring cell welded
Fill fluid	Silicone oil Synthetic oil
Material housing	Die-cast aluminum Stainless steel
Communication	4…20 mA HART
Certificates / Approvals	ATEX, FM, CSA, IECEx, NEPSI, INMETRO, UK Ex
Safety approvals	SIL
Design approvals	NACE MR0175, EN10204-3.1
Hygienic approvals	EHEDG 3A

Specs at a glance

Pressure measuring range	400 mbar…10 bar (6 psi…150 psi)
Process pressure / max. overpressure limit	160 bar (2400 psi)
Accuracy	0.075% of individual sensor, “PLATINUM” 0.05% of individual sensor
Main wetted parts	316L, Alloy C
Process temperature	–40…+125°C (–40 … +257°F)
Max. measurement distance	4000 m (13.123 ft) H2O
Material process membrane	316L, AlloyC
Measuring cell	400 mbar…10 bar (6 psi…150psi)
Field of application	The Deltabar FMD72 is an electronic differential pressure system used to measure pressure, level, volume, or mass of liquids in pressurized tanks or distillation columns/evaporators. The high pressure sensor (HP) measures the hydrostatic pressure, while the low pressure sensor (LP) measures the head pressure. The level is then calculated in the transmitter using these two digital values. This electronic differential pressure system eliminates the issues associated with traditional differential pressure measurements.
For differential pressure, level, volume or mass measurement of liquids in pressurized tanks and distillation columns/evaporators.
Process connections	Threads, flanges or hygienic connections
Temperature	-40 to +125°C (-40 to +257°F), optional 250°C (480°F)
Measuring range	400mbar to +40bar (6 to 600psi)
Accuracy	Single sensor up to ±0.05%, system up to ±0.07%
International explosion protection certificates	hygienic approvals
Benefits	Eliminates traditional mechanical issues resulting in greater process availability and reliability Safety risks are minimized with the new electronic differential pressure system architecture and design Lowest total cost of ownership due to reduced installation time, maintenance, downtime and spare requirements Multivariable level measurement: HART-based differential pressure, head pressure and sensor temperatures from one system Continuous health indication of the entire system via HART-based diagnostic High reproducibility and long-term stability Process safety assured with small flush mounted process connections in hygienic applications