Electronic
differential pressure
Deltabar FMD71

Deltabar FMD71 stainless steel housing ©Endress+Hauser
Deltabar FMD71 aluminum housing ©Endress+Hauser
Deltabar FMD71 aluminum housing ©Endress+Hauser

Pressure measuring principle

The new electronic dp system

Electronic differential pressure system utilizing two ceramic sensor modules and one transmitter

The electronic dp Deltabar FMD71 is a differential pressure system, used to measure the pressure or level, volume or mass of liquids in pressurized tanks or distillation columns/evaporators. The high pressure sensor (HP) measures the hydrostatic pressure. The low pressure sensor (LP) measures the head pressure. The level is calculated in the transmitter using these two digital values. The electronic dp system eliminates issues of traditional differential pressure measurements.

  • 장점

    • Eliminates traditional mechanical issues resulting in greater process availability and reliability

    • Overload-resistant high purity ceramic sensor (99.9% Al2O3)

    • Safety risks are minimized with the new electronic differential pressure system architecture and...

  • 적용 분야

    For differential pressure, level, volume or mass measurement of liquids in pressurized tanks and distillation columns/evaporators.

    • Process connections: Threads, flanges and hygienic connections

    • Process temperature: -40 up to +150°C (-40 to +302°F)

    • ...

Details

  • 측정 원리

    Differential pressure

  • Characteristic / Application

    Electronic differential pressure transmitter with ceramic sensor (Ceraphire) for level, volume or mass measurement in liquids.

  • Supply / Communication

    4...20 mA HART:

    12...45V DC

    Exia: 12...30V DC

  • Accuracy

    0.075% of individual sensor,

    "PLATINUM" 0.05% of individual sensor

  • Long term stability

    0.05% of URL/year of individual sensor

  • Ambient temperature

    –40...+80°C

    (–40...+176°F)

  • Process temperature

    –25...+150°C

    (–13...+302°F)

  • Process pressure absolute / max. overpressure limit

    60 bar (900 psi)

  • Pressure measuring range

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

  • Process connection

    Threads
    Flanges (DIN, ASME, JIS)

  • Process connection hygienic

    DIN11851

    DIN11864-1

    Tri-Clamp

    DRD

    Varivent

  • Communication

    4...20 mA HART

  • Certificates / Approvals

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

  • Design approvals

    NACE MR0175

    EN10204-3.1

  • Hygienic approvals

    FDA

    3A

  • Options

    4-line digital display

    SS- or Aluminium housing

  • Application limits

    Use Software Applicator Sizing Electronic DP

  • 측정 원리

    Differential pressure

  • Characteristic

    Electronic differential pressure transmitter with ceramic sensor (Ceraphire) for level, volume or mass measurement in liquids.

  • Supply voltage

    4...20 mA HART:

    12...45V DC (Non Ex)

    Ex ia: 12...30V DC

  • Reference Accuracy

    0.075% of individual sensor,

    "PLATINUM" 0.05% of individual sensor

  • Long term stability

    0.05% of URL/year of individual sensor

  • Process temperature

    –25...+150°C

    (–13...+302°F)

  • Ambient temperature

    –40...+80°C

    (–40...+176°F)

  • Measuring cell

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

  • Vacuum resistance

    0 mbar

  • Max. Turn down

    100 : 1

  • Max. overpressure limit

    60 bar (900 psi)

  • Process connection

    Threads
    Flansch (DIN, ASME, JIS)

  • Process connection hygienic

    DIN11851

    DIN11864-1

    Tri-Clamp

    DRD

    Varivent

  • Material process membrane

    Ceramic

    316L, AlloyC

  • Material gasket

    Viton, Kalrez, EPDM, NBR, Silicone

  • Fill fluid

    Silicone Oil

  • Material housing

    Die-cast aluminum

    Stainless steel

  • Communication

    4...20 mA HART

  • Certificates / Approvals

    ATEX, FM, CSA, IECEx, NEPSI, INMETRO

  • Design approvals

    NACE MR0175,

    EN10204-3.1,

  • Hygienic approvals

    EHEDG,

    3A

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