Deltapilot M FMB50

Summary

Product identification

The Deltapilot M series (FMB50, FMB51, FMB52, FMB53) are pressure transmitters with a CONTITE™ measuring cell designed for hydrostatic pressure measurement in liquids and paste-like media. They are suitable for applications in process engineering, process measuring technology, pharmaceuticals, and the food industry, as well as for level, volume, or mass measurement in liquids.

Key Benefits

• Excellent reproducibility and long-term stability.
• CONTITE™ measuring cell: Condensate-resistant, providing maximum plant safety.
• High reference accuracy: ±0.2%, optionally ±0.1%.
• Turn down: Up to 100:1.
• Integrated platform: Unified platform for differential pressure, hydrostatics, and pressure measurements (Deltabar M, Deltapilot M, Cerabar M).
• User-friendly interface: Quick and easy commissioning.
• SIL 2 certified: For process pressure monitoring up to SIL 2 according to IEC 61508 and IEC 61511.
• Drinking water approvals: KTW, NSF.

Communication Protocols

The devices support multiple communication protocols:

• 4 to 20 mA with HART communication protocol (HART 6.0)
• 4 to 20 mA with IO-Link communication protocol (FMB50 only)
• PROFIBUS PA (Profile 3.02)
• FOUNDATION Fieldbus

Input

Measured Variable

• Hydrostatic pressure

Measuring Range

The following measuring ranges are available:

1. Largest factory-configurable turn down: 20:1, higher available on request.
2. The vacuum resistance applies to the measuring cell at reference operating conditions.
3. Product Configurator, order code for "Sensor range".

Output

Output Signal

• 4 to 20 mA with superimposed digital communication protocol HART 6.0, 2-wire
• Digital communication IO-Link, 3-wire (FMB50 only)
• Digital communication signal PROFIBUS PA (Profile 3.02)
• Digital communication signal FOUNDATION Fieldbus

Signal Range 4 to 20 mA

• 4 to 20 mA HART and IO-Link: 3.8 to 20.5 mA

Signal on Alarm

• As per NAMUR NE 43
• 4 to 20 mA HART: Options include Max. alarm (21 to 23 mA), Hold measured value, Min. alarm (3.6 mA).
• IO-Link: Max. alarm (22 mA), Min. alarm (3.6 mA), Hold measured value.
• PROFIBUS PA: Configurable in the Analog Input block (Last Valid Out Value, Fail-safe Value, Status Bad).
• FOUNDATION Fieldbus: Configurable in the Analog Input block (Last Good Value, Fail-safe Value, Wrong Value).

Electrical

Supply Voltage

• 4 to 20 mA HART:
  • Intrinsically safe: 11.5 to 30 V DC
  • Other types of protection / Devices without certificate: 11.5 to 45 V DC (35 V DC for versions with plug-in connector)
• IO-Link: 11.5 to 30 V DC (analog output only); 18 to 30 V DC (IO-Link enabled)
• PROFIBUS PA: 9 to 32 V DC (non-hazardous areas)
• FOUNDATION Fieldbus: 9 to 32 V DC (non-hazardous areas)

Current Consumption

• IO-Link: < 60 mA
• PROFIBUS PA: 11 mA ±1 mA
• FOUNDATION Fieldbus: 16 mA ±1 mA

Electrical Connection

Available options include M20 gland, G ½" thread, NPT ½" thread, M12 plug, 7/8" plug, HARTING Han7D plug, and M16 valve connector. Degree of protection varies by option (IP64 to IP68 / NEMA 4X/6P).

Mechanical Construction

Device Height

Dimensions vary by housing type (F31 aluminum, F15 stainless steel).

Diameter of Process Membrane

See the official PDF for exact dimensions.

Performance Characteristics

Reference Operating Conditions

• As per IEC 62828-2
• Ambient temperature: +21 to +33 °C (+70 to +91 °F)
• Humidity: 5 to 80 % rH
• Atmospheric pressure: 860 to 1 060 mbar (12.47 to 15.37 psi)
• Positioning of the measuring cell:
  • FMB50: horizontally ±1°
  • FMB51/FMB52/FMB53: vertically ±1°
• Process membrane materials: Alloy C276 (2.4819) with or without coating (AuRh or AuPt).
• Measuring cell material: Alloy C276 (2.4819), 316L (1.4435).
• Fill fluid: Synthetic oil (FDA)/inert oil.
• Supply voltage: 24 V DC ±3 V DC.
• Load for HART: 250 Ω.

Resolution

• Current output: 1 μA
• Display: Configurable.

Reference Accuracy

Reference accuracy includes non-linearity, pressure hysteresis, and non-repeatability according to IEC 62828-1 / IEC 61298-2.

Environment

Ambient Temperature Range

• See the official PDF for exact ranges.

Storage Temperature Range

• See the official PDF for exact ranges.

Degree of Protection

• IP66/68 NEMA 4X/6P for most electrical connection options.
• IP65 for HARTING Han7D plug.
• IP64 for M16 valve connector.

Vibration Resistance

• See the official PDF for technical specifications.

Electromagnetic Compatibility

• See the official PDF for technical specifications.

Mounting

• General installation instructions are provided, with specific details for FMB50 and FMB51/FMB52/FMB53.
• Options include wall and pipe mounting, and a "Separate housing" version.

Materials

Materials Not in Contact with Process

• See the official PDF for details.

Materials in Contact with Process

• See the official PDF for details.

Certificates and Approvals

• CE Mark
• RoHS
• RCM Marking
• Ex approvals (details in separate Ex documentation)
• EAC conformity
• Suitable for hygiene applications
• Certificate of current Good Manufacturing Practices (cGMP)
• Certificate of Compliance ASME BPE 2012 (FMB50 only)
• Functional Safety SIL
• CRN approval
• AD2000
• Pressure Equipment Directive 2014/68/EU (PED)
• ANSI/ISA 12.27.01 Classification

Accessories

• Weld-in adapter, Process adapter, and Flanges
• Mounting bracket for wall and pipe mounting
• Suspension clamp (FMB53 only)
• Extension cable shortening kit (FMB53 only)
• M12 connector
• Adapter Uni for FMB50

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror