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Endress+Hauser Levelflex FMP56: Reliable Guided Radar for Bulk Solids and Dusty Silos

News September 30, 2026

Endress+Hauser Levelflex FMP56: Reliable Guided Radar for Bulk Solids and Dusty Silos

Endress+Hauser Levelflex FMP56 rope probe level transmitter for bulk solids

An economical basis model for bulk-solids applications

The Endress+Hauser Levelflex FMP56 is a guided-wave radar transmitter for continuous level measurement in powdery to granular bulk solids. Its rope probe and compact process connections make it a practical choice for light-duty conditions in silos and storage vessels.

FMP56 is designed to maintain reliable measurement in dusty atmospheres, narrow silos and vessels containing obstacles. Dust, filling noise, temperature layers and gas layers do not directly affect the guided radar measuring principle, provided the probe and installation are correctly selected.

Why Choose the Levelflex FMP56?

Built for bulk solids
Optimized for continuous measurement in powders and granules under light-duty process conditions.
Reliable in dust
Suitable for dusty atmospheres, high narrow silos and vessels where internal obstacles complicate measurement.
Efficient configuration
Rope-probe design, factory pre-calibration, HistoROM and optional Bluetooth simplify commissioning and service.

How Guided Wave Radar Works in Solids

High-frequency radar pulses travel down the rope probe. When they reach the product surface, part of the signal is reflected to the transmitter. The measured travel time is converted into level. Because the energy is guided by the probe, the instrument can work reliably even when airborne dust or filling noise would challenge some non-contact measurement methods.

Levelflex FMP56 Key Specifications

ParameterPublished specification
Measuring principleGuided radar / time-of-flight
ApplicationContinuous level measurement in powdery to granular bulk solids
ProbeRope probe; designed for pulling forces up to 12 kN
Accuracy±2 mm (0.08 in)
Process temperature−40 to +120 °C (−40 to +248 °F)
Process pressureVacuum to 16 bar (232 psi)
Maximum measuring distance12 m (40 ft), minimum DK >1.4
Process connectionsG 3/4 or 3/4 NPT thread; adapter flange options
Communication4–20 mA HART, PROFIBUS PA, FOUNDATION Fieldbus; optional Bluetooth

Specifications, approvals and material options depend on the selected order code. Confirm the current manufacturer documentation and installation conditions before ordering.

Typical Applications

  • Powder storage silos
  • Granular raw-material bins
  • Narrow silos with internal obstacles
  • Dusty filling and emptying processes
  • Food ingredients, minerals, plastics and construction materials
  • Light-duty bulk-solids inventory measurement

Installation Considerations

For best performance, place the probe away from the filling stream, internal ladders and structural members. Confirm the expected tensile load on the rope probe, especially where heavy solids, material movement or bridging may occur. The nozzle, roof structure, outlet geometry and anchoring method should be reviewed together with the maximum and minimum product levels.

FMP56 or FMP57?

ModelPrimary selection focus
Levelflex FMP56Economical base model for common bulk-solids applications and light-duty process conditions.
Levelflex FMP57More demanding bulk-solids duties, taller silos and higher mechanical loads.

Information Needed for Correct Selection

  1. Material name, bulk density, particle size and dielectric constant
  2. Silo height, diameter, roof and outlet geometry
  3. Maximum measuring range and required dead-zone clearance
  4. Filling point, internal obstacles and expected dust level
  5. Estimated rope tensile load and whether anchoring is required
  6. Temperature, pressure, hazardous-area and communication requirements

Contact Us for FMP56 Selection and Quotation

HONGKONG XIEYUAN TECH CO., LIMITED

Email: becky@hkxytech.com
Web: www.hkxytech.com
Mobile: +86-15972186287 (WhatsApp & WeChat)

Technical reference: Endress+Hauser Levelflex FMP56 official product information. Product specifications and availability may change; confirm the complete order code before purchasing.