E+H/Endress+Hauser Deltabar S FMD77 Differential Pressure Transmitter With Long Stability

E+H/Endress+Hauser Deltabar S FMD77 Differential Pressure Transmitter With Long Stability

The Deltabar FMD77 differential pressure transmitter with piezoresistive sensor and internal welded metallic membranes and one diaphragm seal to the process is 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.
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Product Details

The Deltabar FMD77 Differential Pressure Transmitter With Piezoresistive Sensor And Internal Welded Metallic Membranes And One Diaphragm Seal To The Process Is 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.


Overload-resistant and function-monitored

Very good reproducibility and long-term stability

HistoROM data backup for instrument settings and measured values

Developed and designed according to IEC 61508, approved for use in SIL3 safety applications (min., max., range)

Quick commissioning thanks to quick setup menu with extensive diagnostic functions

Easy and safe menu-guided product configuration: On-site via display module, 4 to 20mA with HART, PROFIBUS PA, or FOUNDATION Fieldbus

Modular design for dP and pressure platform, e.g. replaceable display, universal electronics

Technology informations

Product name

E+H/Endress+Hauser Deltabar S FMD77 Differential pressure transmitter with long stability

Supply / Output

4...20 mA


HART :10,5...45V DC

Ex ia: 10,5...30V DC

Fieldbus:9...32V DC


0,075% + influence of diaphragm seal

Long term stability

0,05% of URL/year

Ambient temperature


Process temperature


Max. overpressure limit

160bar(2400 psi)

Measuring range

100mbar...16 bar(40 inH20...240psi)

Max. measurement distance

160m (525ft) H2O

Main wetted parts

Alloy C276

316L Monel Tantalum

Process connection

Low pressure side:1/4-18NPT,RC1/4"
High pressure side: Flanges (DIN, ANSI, JIS)

Certificates / Approvals

ATEX ,FM,CSA,NEPSI,IECEx,SIL,NACE,WHG/ Overfill prevention,EN10204-3.1


Histo ROM/M-Dat
4-line digital display
SS- or Aluminiumhousing
Separate housing

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