Differential pressure
Deltabar FMD78

Deltabar FMD78 aluminum housing ©Endress+Hauser
Deltabar FMD78 hygienic housing ©Endress+Hauser
Deltabar FMD78 with TempC Membrane ©Endress+Hauser

Pressure measuring principle

The new TempC Membrane

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

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.

  • Edut

    • 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...

  • Käyttöalue

    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)

    • ...

Ominaisuudet ja tiedot

Takaisin

Yksityiskohtaiset tiedot

  • Mittausperiaate

    Differential pressure

  • Characteristic

    Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries
    Modular transmitter
    Long-term stability
    Secondary process barrier
    enhanced safety via self diagnostic functions.

  • Supply voltage

    4...20 mA 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

    -70°C...400°C
    (-94°F...752°F)

  • Ambient temperature

    -50°C...85°C
    (-58°F...185°F)

  • Measuring cell

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

    Diaphragm seal (Pancake, threads)
    Flanges (DIN, ASME)
    Hygienic connections
    Tri-Clamp ISO2852

  • Process connection hygienic

    Tri-Clamp

    DIN11851

    NEUMO

    Varivent

    SMS

    DRD

    Universal adapter

  • 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

  • Safety approvals

    Overfill prevention WHG

    SIL

  • Design approvals

    NACE MR0175
    EN10204-3.1

  • Hygienic approvals

    3A, FDA

  • Marine approvals

    GL/ ABS

  • Specialities

    Diagnostic functions

    TempC Membrane

  • Mittausperiaate

    Differential pressure

  • Characteristic / Application

    Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries
    Modular transmitter
    Long term stability
    Enhanced safety via self diagnostic functions
    Secondary process barrier

  • Specialities

    TempC membrane

  • Supply / Communication

    4...20 mA HART:
    10,5...45V DC
    Ex ia: 10,5...30V DC
    PROFIBUS PA /
    FOUDATION Fieldbus:
    9...32V DC

  • Accuracy

    0,075% + influence of diaphragm seal

  • Long term stability

    0,05% of URL/year

  • Ambient temperature

    -50°C...85°C
    (-58°F...185°F)

  • Process temperature

    -40°C...400°C
    (-40°F...752°F)

  • Process pressure absolute / max. overpressure limit

    160bar (2400 psi)

  • Pressure measuring range

    100mbar...40bar
    (1.5psi ... 600 psi)

  • Main wetted parts

    Alloy C276
    316L
    Monel
    Tantalum

  • Process connection

    Diaphragm seal (Pancakes, threads)
    Flanges (DIN, ASME)
    Tri-Clamp ISO2852
    Hygienic connections

  • Process connection hygienic

    Tri-Clamp

    DIN11851

    NEUMO

    Varivent

    SMS

    DRD

    Universal adapter

  • Max. measurement distance

    400m (1312ft) H2O

  • Communication

    4...20 mA HART
    PROFIBUS PA
    FOUNDATION Fieldbus

  • Certificates / Approvals

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

  • Safety approvals

    SIL

  • Design approvals

    EN10204-3.1

    NACE MR0175, MR0103

  • Hygienic approvals

    3A, EHEDG

  • Marine approval

    GL/ ABS

  • Options

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

  • Application limits

    Measuring cell:

    Metal welded

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