Deltabar - Model FMD77 -Differential Pressure Transmitter
Differential pressure transmitter with one diaphragm seal for level measurement. The Deltabar FMD77 differential pressure transmitter with metal sensor uses a one-sided diaphragm seal or diaphragm seals on both sides with a capillary on the low pressure side. Typically used in the process industry for continuous level measurement in liquids. 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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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
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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 level, volume or mass measurement in liquids.
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Process connections: Threads and flanges
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Temperature: -70 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
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
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Long term stability
0,05% of URL/year
0,125% of URL/5 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)
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Vacuum resistance
50 mbar (0.73 psi)
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Max. Turn down
100:1
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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
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Fill fluid
Silicone oil,
Inert oil,
Vegetable oil
Low- temperature oil
High- temperature oil -
Material housing
316L, Die-cast aluminum
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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
WHG/ Overfill prevention -
Design approvals
NACE MR0175
EN10204-3.1 -
Specialities
Diagnostic functions