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

Specs at a glance

• Accuracy

  0.075% of individual sensor,
  “PLATINUM” 0.05% of individual sensor

• Process temperature

  –40…+125°C
  (–40 … +257°F)

• Pressure measuring range

  400 mbar…10 bar
  (6 psi…150 psi)

• Process pressure / max. overpressure limit

  160 bar (2400 psi)

• Main wetted parts

  316L, Alloy C

• Material process membrane

  316L, AlloyC,

• Measuring cell

  400 mbar…10 bar
  (6 psi…150psi)

• See all specifications

Field of application

The Deltabar FMD72 is an electronic differential pressure system used to measure pressure, level, volume, or mass of liquids in pressurized tanks or distillation columns/evaporators. The high pressure sensor (HP) measures the hydrostatic pressure, while the low pressure sensor (LP) measures the head pressure. The level is then calculated in the transmitter using these two digital values. This electronic differential pressure system eliminates the issues associated with traditional differential pressure measurements.

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 to +125°C (-40 to +257°F), optional 250°C (480°F)

• Measuring range: 400mbar to +40bar (6 to 600psi)

• Accuracy: Single sensor up to ±0.05%, system up to ±0.07%

• International explosion protection certificates, hygienic approvals

Benefits

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

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

• Lowest total cost of ownership due to reduced installation time, maintenance, downtime and spare requirements

• Multivariable level measurement: HART-based differential pressure, head pressure and sensor temperatures from one system

• Continuous health indication of the entire system via HART-based diagnostic

• High reproducibility and long-term stability

• Process safety assured with small flush mounted process connections in hygienic applications

  Specifications

  • Characteristic

    Electronic differential pressure transmitter with metal sensor 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

    –40…+125°C
    (–40…+257°F)

  • Ambient temperature

    –40…+80°C
    (–40…+176°F)

  • Measuring cell

    400 mbar…10 bar
    (6 psi…150psi)

  • Vacuum resistance

    10 mbar (0.15 psi)

  • Max. overpressure limit

    160 bar (2400 psi)

  • Process connection

    Threads
    Flange (DIN, ASME,JIS)

  • Process connection hygienic

    DIN11851
    DIN11864-1
    Tri-Clamp
    DRD
    Varivent

  • Material process membrane

    316L, AlloyC,

  • Fill fluid

    Silicone oil
    Synthetic oil

  • Material housing

    Die-cast aluminum
    Stainless steel

  • Communication

    4…20 mA HART

  • Certificates / Approvals

    ATEX, FM, CSA, IECEx, NEPSI, INMETRO, UK Ex

  • Design approvals

    NACE MR0175,
    EN10204-3.1,

  • Hygienic approvals

    EHEDG
    3A