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Deltabar FMD78 - Differential pressure

Differential pressure
Deltabar FMD78

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

FMD78
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  • Mätprincip

    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, UK Ex

  • Safety approvals

    SIL

  • Design approvals

    NACE MR0175
    EN10204-3.1

  • Hygienic approvals

    3A, FDA

  • Marine approvals

    GL/ ABS

  • Specialities

    Diagnostic functions
    TempC Membrane

  • Successor

    PMD78B

  • Mätprincip

    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 / 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

  • Successor

    PMD78B

  • Application limits

    Measuring cell:
    Metal welded

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