Endress+Hauser Electronic differential pressure Deltabar FMD71
007115-HW-ENDRESS-015
Overview
An advanced electronic differential pressure system using two ceramic sensor modules and a single transmitter to deliver highly accurate and stable level, volume, and mass measurements in pressurized liquid applications. It eliminates mechanical issues found in traditional DP systems, improving reliability and reducing maintenance.
Measuring principle
Differential pressure
Characteristic
Electronic differential pressure transmitter with ceramic sensor (Ceraphire) 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
–25...+150°C
(–13...+302°F)
Ambient temperature
–40...+80°C
(–40...+176°F)
Measuring cell
100 mbar...40 bar
(1.5 psi...600 psi)
Vacuum resistance
0 mbar
Max. Turn down
100 : 1
Max. overpressure limit
60 bar (900 psi)
Process connection
Threads
Flansch (DIN, ASME, JIS)
Process connection hygienic
DIN11851
DIN11864-1
Tri-Clamp
DRD
Varivent
Material process membrane
Ceramic
316L, AlloyC
Material gasket
Viton, Kalrez, EPDM, NBR, Silicone
Fill fluid
Silicone Oil
Material housing
Die-cast aluminum
Stainless steel
Communication
4...20 mA HART
Certificates / Approvals
ATEX, FM, CSA, IECEx, NEPSI, INMETRO, UK Ex
Design approvals
NACE MR0175,
EN10204-3.1,
Hygienic approvals
EHEDG,
3A
The electronic DP Deltabar FMD71 uses high-purity ceramic sensors to digitally measure hydrostatic and head pressure, calculating level directly in the transmitter. With multivariable HART diagnostics, overload-resistant sensors, improved safety architecture, and low total ownership cost, it offers a modern, maintenance-free alternative to traditional differential pressure setups.