Differential pressure transmitter with metal sensor for measurement of pressure differences

The Deltabar PMD75 differential pressure transmitter with piezoresistive sensor and welded metallic membrane is used in all industries for continuous measurement in liquids, vapors and gases. The 3-key operation enables simple and reliable commissioning and operation. The integrated HistoROM data module allows easy management of process and device parameters. Designed according to IEC 61508 for use in SIL2/3 safety applications.

Specs at a glance

• Accuracy

  Standard: 0.05%
  Platinum: up to 0.035%

• Max. measurement error

  0,075%
  “PLATINUM” 0,05%

• Process temperature

  -40 °C…85 °C
  (-40 °F…185 °F)

• Medium temperature range

  Temperature gradient from pressure piping

• Pressure measuring range

  10 mbar…250 bar
  (0.15 psi…3750 psi)

• Process pressure / max. overpressure limit

  420 bar (6300 psi)

• Main wetted parts

  Alloy C276
  316L
  Monel
  Tantalum

• Max. measurement distance

  400 m (1.312 ft) H2O

• Max. process pressure

  max. 420 bar
  (max. 6091 psi)

• Material process membrane

  316L, AlloyC,
  Tantal,
  Gold-Rhodium

• Measuring cell

  10 mbar…250 bar
  (0.15 psi…3750 psi)

Field of application

The Deltabar PMD75 differential pressure transmitter with piezoresistive sensor and welded metallic membrane is used in all industries for continuous measurement in liquids, vapors and gases. The 3-key operation enables simple and reliable commissioning and operation. The integrated HistoROM data module allows easy management of process and device parameters. Designed according to IEC 61508 for use in SIL2/3 safety applications.

For level, volume or mass measurement in liquids, differential pressure monitoring as well as flow measurement (volume or mass flow) in conjunction with primary elements in gases, vapors and liquids.

• Process connections: Threads

• Process temperature: -40 to +85°C (-40 to +185°F)

• Measuring ranges: 0.25mbar to 40bar (0.0036 to 600psi)

• Accuracy: ±0.05%, “Platinum” ±0.035% (optional)

• International explosion protection certificates, overfill prevention WHG, SIL, hygienic approvals, marine approvals

Benefits

• Best accuracy, reproducibility and long-term stability

• 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 20mA 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

• Overload-resistant up to 420bar / 42MPa / 6300psi, function-monitored

• Seamless and independent system integration (HART/PA/FF)

  Specifications

  • Characteristic

    Digital transmitter with metallic measuring diaphragms
    Modular transmitter
    Long-term stability
    High static pressure/Overload resistance
    Secondary process barrier

  • 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

    Standard: 0.05%
    Platinum: up to 0.035%

  • Long term stability

    0.03 % of URL/ year
    0.05 % of URL/ 5 years
    0.08 % of URL/ 10 years

  • Process temperature

    -40°C…85°C
    (-40°F…185°F)

  • Ambient temperature

    -50°C…85°C
    (-58°F…185°F)

  • Measuring cell

    10 mbar…250 bar
    (0.15 psi…3750 psi)

  • Smallest calibratable span

    1 mbar (0.015 psi)

  • Vacuum resistance

    50 mbar (0.73 psi)

  • Max. Turn down

    100:1

  • Max. overpressure limit

    On one side:
    420 bar
    (6300psi)

  • Process connection

    1/4-18NPT
    RC1/4″

  • Material process membrane

    316L, AlloyC,
    Tantal,
    Gold-Rhodium

  • Material gasket

    Viton, PTFE, EPDM, NBR

  • Fill fluid

    Silicone oil
    Inert 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 MR0103
    EN10204-3.1

  • Marine approvals

    GL/ ABS

  • Specialities

    Diagnostic functions

  • Successor

    PMD75B