Differential pressure
Deltabar FMD77

Differential pressure transmitter with one diaphragm seal for level measurement

FMD77

Compare

Deltabar FMD77 temperature isolator short, transmitter vertical

Deltabar FMD77 temperature isolator short, transmitter horizontal

Deltabar FMD77 with two diaphragm seals and a capillary on the low pressure side

Deltabar FMD77 temperature isolator long, transmitter horizontal

Specs at a glance

Accuracy

0,075% + influence of diaphragm seal
Process temperature

-40°C...400°C
(-40°F...752°F)
Pressure measuring range

100mbar...16bar
(1.5psi...230 psi)
Process pressure / max. overpressure limit

160bar (2400 psi)
Main wetted parts

Alloy C276
316L
Monel
Tantalum
Max. measurement distance

160m (525ft) H2O
Material process membrane

316L, AlloyC,
Tantal,
Gold-Rhodium,
PTFE
Measuring cell

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

See all specifications

Field of application

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.

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

Benefits

Large variety of different process connections and membrane materials
Highest safety due to gas-tight feedthrough with capabilities up to SIL2/3, certified to
IEC 61508
New TempC Membrane minimizes influences of ambient and process temperature fluctuations
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)

Videos

Pressure measuring principle

Extended selection

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Predecessor

Deltabar S FMD630

Success stories

High-quality instrumentation for cooling water systems

Torishima designs and builds large cooling water systems for customers in the Middle East, relying on Endress+Hauser instrumentation for the quality and performance of the products.
Read the full story
Improved accuracy in butanol level measurement

Global crop protection and seed technology company Nufarm reduces measurement uncertainty to less than 1% with new-generation 80 GHz radar level sensors
Read the full story
A partnership to improve operational efficiency

Portland Bunkers UK Ltd operates a state-of-the-art fuel storage terminal on the south coast. Due to the risk of pollution from high volumes of oil, advanced monitoring is required at all times.
Read the full story
Safe and easy access to process data via Bluetooth

Kemira, a global chemicals company, needs accurate monitoring of level and temperature for polymer manufacturing. They use instrumentation with Bluetooth for safe and easy access to process data.
Read the full story
Level monitoring protects natural spring waters

Vinci Construction had to protect a network of ancient thermal springs during a £50m hotel redevelopment. A level monitoring solution ensured the swimming pools didn’t leak into the aquifer.
Read the full story

	EN
01/04/2024
04/01/2022
03/12/2020
23/11/2020
01/04/2020

Language:	English
Version:	01/04/2024
File size:	3.7 MB
File name:	TI00382PEN_3524-00.pdf

Language:	English
Version:	05/03/2019
File size:	2 MB
File name:	HE_01110_01.19 FCM China Cerabar, Deltabar - Metall.pdf

	EN
01/04/2024
04/01/2022
03/12/2020
23/11/2020
01/04/2020

Language:	English
Version:	01/04/2024
File size:	3.7 MB
File name:	TI00382PEN_3524-00.pdf

	EN
03/04/2017
10/12/2014
07/08/2013
01/10/2011
01/05/2010

	EN
03/04/2017
10/12/2014
07/05/2014
30/04/2013
01/10/2011

	EN
01/08/2024
03/04/2017
15/04/2015
10/12/2014
07/05/2014

	EN
01/03/2018
10/12/2014
01/11/2014
07/05/2014
17/01/2013

Differential pressureDeltabar FMD77

Differential pressure transmitter with one diaphragm seal for level measurement

Specs at a glance

Accuracy

Process temperature

Pressure measuring range

Process pressure / max. overpressure limit

Main wetted parts

Max. measurement distance

Material process membrane

Measuring cell

Field of application

Benefits

Videos

Extended selection

Predecessor

Success stories

High-quality instrumentation for cooling water systems

Improved accuracy in butanol level measurement

A partnership to improve operational efficiency

Safe and easy access to process data via Bluetooth

Level monitoring protects natural spring waters

Measuring principle

Characteristic

Supply voltage

Reference Accuracy

Long term stability

Process temperature

Ambient temperature

Measuring cell

Smallest calibratable span

Vacuum resistance

Max. Turn down

Max. overpressure limit

Process connection

Material process membrane

Material gasket

Fill fluid

Material housing

Communication

Certificates / Approvals

Safety approvals

Design approvals

Specialities

Successor

Measuring principle

Characteristic / Application

Supply / Communication

Accuracy

Long term stability

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Pressure measuring range

Main wetted parts

Process connection

Max. measurement distance

Communication

Certificates / Approvals

Safety approvals

Design approvals

Options

Successor

Application limits

Back

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Mounting set housing T17 / sensor

Differential pressure
Deltabar FMD77