PMD75 Differential pressure Deltabar

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)

• Measuring principle

  Differential pressure

• 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