Differential pressure
Deltabar FMD78

Differential pressure transmitter with two diaphragm seals for differential pressure and level

FMD78

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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...40bar
(1.5psi ... 600 psi)
Process pressure / max. overpressure limit

160bar (2400 psi)
Main wetted parts

Alloy C276
316L
Monel
Tantalum
Max. measurement distance

400m (1312ft) H2O
Material process membrane

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

100 mbar...40 bar
(40 inH2O...600 psi)

See all specifications

Field of application

The Deltabar FMD78 differential pressure transmitter with metal sensor uses two capillary diaphragm seals. Typically used in process and hygiene applications for continuous measurement of pressure differences in liquids, vapors, gases and dusts. 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 differential pressure, level, volume or mass measurement in liquids.

Process connections: Threads, flanges, pancake and hygienic connections
Process temperature: -70 up to +400°C (-94 to +752°F)
Measuring ranges: 100mbar to +40 bar (1.5 to 600psi)
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
New TempC Membrane for diaphragm seals: Minimum temperature effects and short recovery times
Highest safety due to gas tight feedthrough with capabilities up to SIL2/3, certified to IEC 61508
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
The new TempC Membrane

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 FMD633

Success stories

Optimized logistics concept for tank systems

We implemented a highly effective logistics concept at chemicals distributors Brenntag Schweizerhall AG's Basel site.
Read the full story
Level measurement of silos on construction sites

Discover how Profibaustoffe Austria GmbH automated the monitoring of bulk material inside silos to deliver refills on a "just- in-time" basis.
Read the full story
Time saved, safety increased

Employees of Returkraft regularly have to fulfill and document all requirements of the SIL measuring points in the plant.
Read the full story
Fit for purpose instrumentation for CNG compressors

The Egyptian government is working to replace liquid fuels with natural gas. To achieve this they targeted increasing the number of CNG stations in their country from 306 to 1000 by the end of 2021.
Read the full story
Extend SIL proof test intervals with new Liquiphant FTL51

Discover how our customer CABB was able to extend SIL proof test intervals with the new Liquiphant FTL51
Read the full story

Filter

Search spare parts by number in drawing

60 spare parts & accessories

Housing filter VA, EPDM, 1 piece

further parts

Order code

71111056
Housing filter VA, VMQ, F15, T17, 1 pc.

further parts

Order code

71219639
Cable gland M20, gasket

Adapter housing/cable entry

Drawing number

Order code

15

52020760
Cable entry G1/2, gasket, adapter

Adapter housing/cable entry

Drawing number

Order code

15

52020761
Plug 2/7-pole, HAN7D, gasket

Adapter housing/cable entry

Drawing number

Order code

15

52020762
Plug 3-pole, M12, gasket

Adapter housing/cable entry

Drawing number

Order code

15

52020763
Cover sealing FVMQ, T14, 5 pieces

Sealing

Drawing number

Order code

21

71206971
Cover T14/T15 Alu, Ex d, EPDM

Cover

Drawing number

Order code

20

52020433
Cover T14 316L, Ex d, EPDM

Cover

Drawing number

Order code

20

52028310
Cover T17 316L, EPDM

Cover

Drawing number

Order code

20

71002774
Cover T17 316L, EPDM

Cover

Drawing number

Order code

25

71002774
Cover T17 316L, sight glass, EPDM

Cover

Drawing number

Order code

20

71002810
Cover T17 316L, sight glass PC, EPDM

Cover

Drawing number

Order code

20

71002811
Cover T14 316L, Ex d, FVMQ

Cover

Drawing number

Order code

20

71206965
Cover T14 316L, Ex d, sight glass, FVMQ

Cover

Drawing number

Order code

20

71206968
Cover T14/T15 Alu, sight glass, EPDM

Cover

Drawing number

Order code

20

71245247
Cover T14/T15 Alu,Ex d,sight glass,EPDM

Cover

Drawing number

Order code

20

71245249
Cover T14/T15 Alu, EPDM

Cover

Drawing number

Order code

20

52020432
Cover T14/T15 Alu, EPDM

Cover

Drawing number

Order code

25

52020432
Cover T14/T15 Alu, Ex d, EPDM

Cover

Drawing number

Order code

25

52020433
Cover T14 316L, Ex d, EPDM

Cover

Drawing number

Order code

25

52028310
Cover T14 316L, Ex d, FVMQ

Cover

Drawing number

Order code

25

71206965
Ground terminal T14/T15/T17, F30/F31

further parts

Order code

71290825
Sealing EPDM, F30/31/34, T14/15, 5 pcs.

Sealing

Drawing number

Order code

21

52020429
Cover T14 316L, Ex d, sight glass, EPDM

Cover

Drawing number

Order code

20

71245250
Electronics HART Ex, ext. p. b., v2.0

Electronic

Drawing number

Order code

30

52024111
Electronics HART Ex, v2.0

Electronic

Drawing number

Order code

30

52024400
Electronics HART Ex, v2.10

Electronic

Drawing number

Order code

30

71026358
Electronics HART Ex, ext. p. b., v2.10

Electronic

Drawing number

Order code

30

71026359
Upgrade electr. HART Ex,ext.push b.,v2.1

Electronic

Drawing number

Order code

30

52026763
Electronics HART Ex, ext. p. b., v2.11

Electronic

Drawing number

Order code

30

71196093
Electronics PA, HW02.00, SW4.0

Electronic

Drawing number

Order code

30

71071824
Electronics PA, ext. p.b., HW02.00,SW4.0

Electronic

Drawing number

Order code

30

71071825
Electronics FF, HW2.00, SW3.00

Electronic

Drawing number

Order code

30

71071826
Electronics FF, ext. p.b., HW2.00,SW3.00

Electronic

Drawing number

Order code

30

71071827
Electronics PA, Ex, HW2.00, SW3.00

Electronic

Drawing number

Order code

30

71214057
Electronics PA, ext. p.b.,HW2.00, SW3.00

Electronic

Drawing number

Order code

30

71214064
Electronics FF, ext. p.b.,HW2.00, SW2.00

Electronic

Drawing number

Order code

30

71214066
Electronics FF, HW2.00, SW2.00

Electronic

Drawing number

Order code

30

71214069
Electronics FF, ext. p.b.,HW2.00, SW4.00

Electronic

Drawing number

Order code

30

71214890
Electronics FF, HW2.00, SW4.00

Electronic

Drawing number

Order code

30

71214892
Electronics PA, HW02.00, SW4.01

Electronic

Drawing number

Order code

30

71224775
Electronics PA, ext.p. b.,HW02.00,SW4.01

Electronic

Drawing number

Order code

30

71224776
Terminal 2-pole, RFI, FF, Ex

Terminal module

Drawing number

Order code

35

52027691
Terminal 2-pole, RFI, PA, OVP, Ex

Terminal module

Drawing number

Order code

35

71028475
Terminal 2-pole, RFI, FF, OVP, Ex

Terminal module

Drawing number

Order code

35

71028476
Terminal 2-pole, RFI, PA, Ex

Terminal module

Drawing number

Order code

35

71121574
Terminal 3-pole,Li=0, RFI,HART,Ex ia/Exd

Terminal module

Drawing number

Order code

35

71191892
Termin.3-p.,Li=0,RFI,HART,OVP,Ex ia/Exd

Terminal module

Drawing number

Order code

35

71191894
HistoROM / M-DAT, 16K

Memory

Drawing number

Order code

31

52027785
Display module VU340, Cbar/Dbar/Dpilot S

Display

Drawing number

Order code

40

71002865
Screw set, screwed separator

further parts

Drawing number

Order code

56

71518699
Metal gasket, screwed separator

further parts

Drawing number

Order code

57

71518705
Screw set UNF7/16x1/2",VA,4pcs.

further parts

Order code

943153-0031
Cable PE,80inch,sep. housing FMXXX/PMXXX

further parts

Order code

71043886
Cable PE,200inch,sep.housing FMXXX/PMXXX

further parts

Order code

71043888
Cable PE,400inch,sep.housing FMXXX/PMXXX

further parts

Order code

71043889
Cable FEP,200inch,sep.housingFMXXX/PMXXX

further parts

Order code

71070738
Adapterk. FMR2xx,FMx4x,PMx7x,FMD7x,FMG60

further parts

Order code

71000221
Spare RFID TAG

further parts

Order code

XPRFID-
Profile gasket silicone, 5 pieces

further parts

Order code

52023572
Mounting bracket heavy-duty, 7/16-20UNF

Order code

52024609
Mounting bracket standard, 7/16-20 UNF

Order code

71381907
ToF Adapter FXA291

Order code

71007843
Weld-in adapter DRD DN50, 316L

Order code

52002041
Weld-in adapter DRD DN50, 316L, 3.1

Order code

52011899
Weld-in adapter DRD DN50, 304

Order code

916743-0000
Weld-in adapter UNI D65, 316L

Order code

214880-0002
Weld-in adapter UNI D85, 316L

Order code

52006262
Weld-in adapter UNI D85, 316L, 3.1

Order code

52010173
Adapter Uni, Clamp 3", 316L

Order code

71350315
Flushing ring NPS 2" Cl. 150-2500, 316L

Order code

71377370
Flushing ring NPS 3" Cl. 150-2500, 316L

Order code

71377371
Flushing ring DN50, PN16-400, 316L

Order code

71377380
Flushing ring DN80, PN16-400, 316L

Order code

71377383
O-ring Sanitary Tank Spud, 5 pieces

Order code

71546174

Language:	English
Version:	31/03/2019
File size:	183.7 KB
File name:	EA01253PA2_0119.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
25/03/2024
15/09/2023
28/10/2021
30/07/2021
19/06/2020

Language:	English
Version:	25/03/2024
File size:	1.1 MB
File name:	TI00426FEN_2524.pdf

	EN
31/03/2019

	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

Differential pressureDeltabar FMD78

Differential pressure transmitter with two diaphragm seals for differential pressure and level

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

Optimized logistics concept for tank systems

Level measurement of silos on construction sites

Time saved, safety increased

Fit for purpose instrumentation for CNG compressors

Extend SIL proof test intervals with new Liquiphant FTL51

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

Process connection hygienic

Material process membrane

Material gasket

Fill fluid

Material housing

Communication

Certificates / Approvals

Safety approvals

Design approvals

Hygienic approvals

Marine approvals

Specialities

Successor

Measuring principle

Characteristic / Application

Specialities

Supply / Communication

Accuracy

Long term stability

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Pressure measuring range

Main wetted parts

Process connection

Process connection hygienic

Max. measurement distance

Communication

Certificates / Approvals

Safety approvals

Design approvals

Hygienic approvals

Marine approval

Options

Successor

Application limits

Back

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Differential pressure
Deltabar FMD78