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Differential pressure Deltabar FMD77

Differential pressure Deltabar FMD77

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Information

Differential pressure transmitter with one diaphragm seal for level measurement

For level, volume or mass measurement in liquids.

Process connections: Threads and flanges

Temperature: -70 to +400°C (-94 to +752°F)

Measuring ranges: +100mbar to +16bar (+1.5 to +240psi)

Accuracy: ±0.075%

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

Large variety of different process connections and membrane materials

Highest safety due to gas-tight feedthrough with capabilities up to SIL2/3, certified to IEC 61508

New TempC Membrane minimizes influences of ambient and process temperature fluctuations

Easy menu-guided commissioning via local display, 4 to 20 mA 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

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

Pressure measuring principle

Documentation

Technical SheetManual

Specifications

Accuracy
0,075% + influence of diaphragm seal
Process temperature
-40°C...400°C (-40°F...752°F)
Pressure measuring range
100mbar...16bar (1.5psi...230 psi)
Process pressure / max. overpressure limit
160bar (2400 psi)
Main wetted parts
Alloy C276 316L Monel Tantalum
Max. measurement distance
160m (525ft) H2O
Material process membrane
316L, AlloyC, Tantal, Gold-Rhodium, PTFE
Measuring cell
100 mbar...16 bar (40 inH20...240 psi)
Measuring principle
Differential pressure
Characteristic
Digital transmitter with metallic measuring diaphragms, one side with diaphragm seal Modular transmitter Long-term stability Secondary process barrier enhanced saftey via self diagnostic functions
Supply voltage
4...20mA 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
0,075% + influence of diaphragm seal
Long term stability
0.08 % of URL/ year 0.14 % of URL/ 5 years 0.27 % of URL/ 10 years
Process temperature
-40°C...400°C (-40°F...752°F)
Ambient temperature
-50°C...85°C (-58°F...185°F)
Measuring cell
100 mbar...16 bar (40 inH20...240 psi)
Smallest calibratable span
5 mbar (0.075 psi)
Vacuum resistance
50 mbar (0.73 psi)
Max. Turn down
100:1
Max. overpressure limit
160 bar (2400 psi)
Process connection
Low pressure side: 1/4-18NPT RC1/4" High pressure side: Flanges (DIN, ASME, JIS)
Material process membrane
316L, AlloyC, Tantal, Gold-Rhodium, PTFE
Material gasket
None, diaphragm seal welded
Fill fluid
Silicone oil, Inert oil, Vegetable oil Low- temperature oil High- temperature 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 MR0175 EN10204-3.1
Specialities
Diagnostic functions
Successor
PMD78B
Measuring principle
Differential pressure
Characteristic / Application
Digital transmitter with metallic measuring diaphragms one side with diaphragm seal Modular transmitter Long term stability Enhanced safety via self diagnostic functions Secondary process barrier
Supply / Communication
4...20 mA HART: 10,5...45V DC Ex ia: 10,5...30V DC PROFIBUS PA / FOUNDATION Fieldbus: 9...32V DC
Accuracy
0,075% + influence of diaphragm seal
Long term stability
0,05% of URL/year
Ambient temperature
-50°C...85°C (-58°F...185°F)
Process temperature
-40°C...400°C (-40°F...752°F)
Process pressure / max. overpressure limit
160bar (2400 psi)
Pressure measuring range
100mbar...16bar (1.5psi...230 psi)
Main wetted parts
Alloy C276 316L Monel Tantalum
Process connection
Low pressure side: 1/4-18NPT RC1/4" High pressure side: Flanges (DIN, ASME, JIS)
Max. measurement distance
160m (525ft) H2O
Communication
4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus
Certificates / Approvals
ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC
Safety approvals
SIL
Design approvals
EN10204-3.1 NACE MR0175, MR0103
Options
HistoROM/M-Dat 4-line digital display SS- or Aluminiumhousing Separate housing
Successor
PMD78B
Application limits
Measuring cell: Metal welded