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Deltabar - Model FMD78 -Differential Pressure Transmitter
Differential pressure transmitter with two diaphragm seals for differential pressure and level. The Deltabar FMD78 differential pressure transmitter with metal sensor uses two capillary diaphragm seals. Typically used in process and hygiene applications for continuous measurement of pressure differences in liquids, vapors, gases and dusts. The integrated HistoROM data module makes the management of process and device parameters easy. Designed according to IEC 61508 for use in SIL3 safety applications.
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Large variety of different process connections and membrane materials
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New TempC Membrane for diaphragm seals: Minimum temperature effects and short recovery times
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Highest safety due to gas tight feedthrough with capabilities up to SIL2/3, certified to IEC 61508
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Easy menu-guided commissioning via local display, 4 to 20 mA with HART, PROFIBUS PA, FOUNDATION Fieldbus
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HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
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Cost savings with modular concept for easy replacement of sensor, display or electronics
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Seamless and independent system integration (HART/PA/FF)
For differential pressure, level, volume or mass measurement in liquids.
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Process connections: Threads, flanges, pancake and hygienic connections
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Process temperature: -70 up to +400°C (-94 to +752°F)
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Measuring ranges: 100mbar to +16bar (1.5 to 240psi);
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Accuracy: ±0.075%
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International explosion protection certificates, overfill prevention WHG, hygienic approvals, marine approvals, SIL
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Measuring principle
Differential pressure
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Characteristic / Application
Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries
Modular transmitter
Long term stability
Enhanced safety via self diagnostic functions
Secondary process barrier -
Specialities
TempC membrane
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Supply / Communication
4...20 mA HART:
10,5...45V DC
Ex ia: 10,5...30V DC
PROFIBUS PA /
FOUDATION Fieldbus:
9...32V DC -
Accuracy
0,075% + influence of diaphragm seal
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Long term stability
0,05% of URL/year
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Ambient temperature
-50°C...85°C
(-58°F...185°F) -
Process temperature
-40°C...400°C
(-40°F...752°F) -
Process pressure absolute / max. overpressure limit
160bar (2400 psi)
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Pressure measuring range
100mbar...40bar
(1.5psi ... 600 psi) -
Main wetted parts
Alloy C276
316L
Monel
Tantalum -
Process connection
Diaphragm seal (Pancakes, threads)
Flanges (DIN, ASME)
Tri-Clamp ISO2852
Hygienic connections -
Process connection hygienic
Tri-Clamp
DIN11851
NEUMO
Varivent
SMS
DRD
Universal adapter -
Max. measurement distance
400m (1312ft) H2O
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Communication
4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus -
Certificates / Approvals
ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC
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Safety approvals
SIL
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Design approvals
EN10204-3.1
NACE MR0175, MR0103 -
Hygienic approvals
3A, EHEDG
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Marine approval
GL/ ABS
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Options
HistoROM/M-Dat
4-line digital display
SS- or Aluminiumhousing
Separate housing -
Application limits
Measuring cell:
Metal welded
