RFQ

Endress+Hauser Differential pressure Deltabar FMD77

  • NG # 006224-HW-ENDRESS-024

The Deltabar FMD77 is a differential pressure transmitter equipped with a robust metal sensor and diaphragm seal configuration for accurate, continuous level measurement in liquid applications. Its integrated HistoROM module simplifies handling and storage of process and device parameters, ensuring reliable operation in demanding process environments.

Manufactured By :
Endress+Hauser
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Call +88 01714243446

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Overview

Designed for safety-critical applications, the FMD77 meets IEC 61508 requirements for SIL3 use. It supports one-sided or dual diaphragm seals with capillary connection on the low-pressure side, delivering stable performance for level monitoring in the process industry. The device offers efficient parameter management and long-term operational reliability.

Specification

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

0.08 % of URL/ year
0.14 % of URL/ 5 years
0.27 % of URL/ 10 years

Process temperature

-40°C...400°C
(-40°F...752°F)

Ambient temperature

-50°C...85°C
(-58°F...185°F)

Measuring cell

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

Smallest calibratable span

5 mbar (0.075 psi)

Vacuum resistance

50 mbar (0.73 psi)

Max. Turn down

100:1

Max. overpressure limit

160 bar
(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...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus

Certificates / Approvals

ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC, UK Ex

Safety approvals

SIL

Design approvals

NACE MR0175
EN10204-3.1

Specialities

Diagnostic functions

Successor

PMD78B

CATALOGS

Differential pressure Deltabar FMD77

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