FMB51 Hydrostatic Level measurement
FMB51 Hydrostatic Level measurement
Name: FMB51 Hydrostatic Level measurement
Pressure sensor with the Contite measuring cell for hydrostatic level measurement
Description
Measuring Principle Hydrostatic
Characteristic Pressure transmitter for pressure or hydrostatic level measurement with flush mounted metallic CONTITE measuring cell: 
- hermetically welded 
- absolute condensation tight 
- climate-resitant 
- long-term stable 
- Lowest temperature influences 

Rod version 
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 Standard 0,2% 
Optional 0,1%
Long term stability 0,05% of URL/year 
Process temperature -10°C...85°C 
(14°F…212°F) 
Ambient temperature -40°C...85°C 
(-40°F...185°F) 
Measuring cell 100mbar...10bar 
(1.5psi...150psi) 
Smallest calibratable span 10 mbar (1.45 psi)
Vacuum resistance 0 mbar abs. 
Max. Turn down 100:1
Max. overpressure limit 40 bar (600 psi) 
Process connection Thread:
G1 1/2, MNPT1 1/2
Flange:
DN40...DN100,
ASME 2"...4",
JIS 10K
Material process membrane 316L, AlloyC
Gold-Rhodium

 
Material gasket Viton, EPDM, Kalrez, none
Fill fluid Inert oil,
Synthetic oil 
Material housing 316L, Die-cast aluminum 
Output 4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus 
Certificates / Approvals ATEX, FM, CSA, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI
Overfill prevention WHG
SIL
EN10204-3.1
NACE
KTW/ NSF Drinking water
Options Separate housing 
Initial device settings 
Overvoltage protection
Specialities Modularity to differential pressure and process pressure devices (replacable display, universal electronics) 

Diagnostic functions 

Hermetically sealed Contite measuring cell (condensate-resistant and climatic-proofed)
Application limits If pressurized, usage of two pressure transmitters to measure the differential pressure (electronic dP) Observe ratio head pressure : hydrostatic pressure