Electronic differential pressure Deltabar FMD72

The electronic dp Deltabar FMD72 is a differential pressure system, used to measure the pressure, 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.

Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids.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

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

No capillary lines: eliminates condensation, freezing, or leakage issues typical in traditional DP systems. Multi-parameter output: measures and transmits HP pressure, LP pressure, ΔP, and temperature. High long-term stability and excellent reproducibility. Hygienic design suitable for food and pharmaceutical industries. Easy commissioning via HART interface with zero-point and position adjustment functions. Applications Level, volume, and mass measurement in pressurized or vacuum tanks. Monitoring differential pressure in distillation columns, evaporators, and process vessels. Suitable for chemical, food, beverage, and pharmaceutical industries.