Endress+Hauser Deltabar FMD77
Differential pressure
Differential pressure sensor
Accuracy0,075% + influence of diaphragm seal
Process temperature-40В°C...400В°C
(-40В°F...752В°F)
100mbar...16bar
(1.5psi...230 psi)
160bar (2400 psi)
Main wetted partsAlloy C276
316L
Monel
Tantalum
160m (525ft) H2O
Material process membrane316L, AlloyC,
Tantal,
Gold-Rhodium,
PTFE
100 mbar...16 bar
(40 inH20...240 psi)
- Overview +
- Comments +
Multifunctional differential pressure transmitter. For level measurement in closed tanks. Flange mounted Intelligent and highly accurate.
Differential pressure transmitter with one diaphragm seal for level measurement.
Measuring principleDifferential pressure
CharacteristicDigital transmitter with metallic measuring diaphragms, one side with diaphragm seal
Modular transmitter
Long-term stability
Secondary process barrier
enhanced saftey via self diagnostic functions
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)
0,075% + influence of diaphragm seal
Long term stability0.08 % of URL/ year
0.14 % of URL/ 5 years
0.27 % of URL/ 10 years
-40В°C...400В°C
(-40В°F...752В°F)
-50В°C...85В°C
(-58В°F...185В°F)
100 mbar...16 bar
(40 inH20...240 psi)
5 mbar (0.075 psi)
Vacuum resistance50 mbar (0.73 psi)
Max. Turn down100:1
Max. overpressure limit160 bar
(2400 psi)
Low pressure side:
1/4-18NPT
RC1/4"
High pressure side:
Flanges (DIN, ASME, JIS)
316L, AlloyC,
Tantal,
Gold-Rhodium,
PTFE
None, diaphragm seal welded
Fill fluidSilicone oil,
Inert oil,
Vegetable oil
Low- temperature oil
High- temperature oil
316L, Die-cast aluminum
Communication4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus
ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC
Safety approvalsSIL
Design approvalsNACE MR0175
EN10204-3.1
Diagnostic functions
SuccessorPMD78B
Measuring principleDifferential pressure
Characteristic / ApplicationDigital transmitter with metallic measuring diaphragms one side with diaphragm seal
Modular transmitter
Long term stability
Enhanced safety via self diagnostic functions
Secondary process barrier
4...20 mA HART:
10,5...45V DC
Ex ia: 10,5...30V DC
PROFIBUS PA /
FOUNDATION Fieldbus:
9...32V DC
0,075% + influence of diaphragm seal
Long term stability0,05% of URL/year
Ambient temperature-50В°C...85В°C
(-58В°F...185В°F)
-40В°C...400В°C
(-40В°F...752В°F)
160bar (2400 psi)
Pressure measuring range100mbar...16bar
(1.5psi...230 psi)
Alloy C276
316L
Monel
Tantalum
Low pressure side:
1/4-18NPT
RC1/4"
High pressure side:
Flanges (DIN, ASME, JIS)
160m (525ft) H2O
Communication4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus
ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC
Safety approvalsSIL
Design approvalsEN10204-3.1
NACE MR0175, MR0103
HistoROM/M-Dat
4-line digital display
SS- or Aluminiumhousing
Separate housing
PMD78B
Application limitsMeasuring cell:
Metal welded
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