Endress+Hauser Micropilot FMR66B 80GHz Radar Level Transmitter for Solids, Non-contact Level Measurement for Powder & Granules (Ideal for Narrow Silos)

Micropilot FMR66B is a new generation 80 GHz W-band radar level transmitter for solids, designed for reliable non-contact level measurement of bulk solids in simple applications.

With small beam angle and excellent focusing performance, it is especially suitable for narrow silos and stable measurement in tanks with internal obstacles.

The instrument features a built-in guided wizard for easy commissioning, functional safety and verification tests.

Equipped with Heartbeat Technology, it enables online self-verification, monitoring and diagnostics to detect abnormal conditions early and improve process safety and productivity.

Supports Bluetooth commissioning via SmartBlue App and seamless integration into asset management systems, widely used for powder and granule level measurement in grain, building materials, chemical, food and other industries.

• 80GHz W-band radar with small beam angle, sharp focusing, ideal for narrow silos
• Non-contact measurement, wear-free, low maintenance, high dust immunity
• Guided wizard for easy commissioning, verification and functional safety test
• Display with recommended actions and clear diagnostics for fast troubleshooting
• Safety design in accordance with IEC 61508
• Heartbeat Technology for online self-verification, monitoring and diagnostics
• Bluetooth® wireless commissioning via SmartBlue App
• HistoROM data management & RFID tag for easy identification
• Digital communication for seamless integration into control & asset systems
• Full international Ex, SIL, marine and food contact certifications

Applications

• Food & grain: cereals, feed, flour, sugar, salt
• Building materials: cement, lime, gypsum, sand, fly ash
• Chemicals: plastic pellets, powder, raw materials
• Power & environmental: desulfurization powder silos
• Narrow silos and tanks with internal installations
• Solids level measurement requiring Ex, SIL, marine or food contact approvals

Specifications

Measuring Principle

Radar Level Transmitter for Solids (80GHz W‑Band)

Accuracy

±3 mm (0.12 in)

Frequency

W-Band ~80 GHz

Ambient Temperature

-40 … +85 °C

Process Temperature

-40 … +130 °C

Process Pressure

Vacuum … 16 bar

Antenna

• 1-1/2" / 40mm encapsulated, PVDF
• 2" / 50mm drip-off, PTFE

Wetted Parts

PVDF or PTFE

Process Connections

• Thread: G1-1/2", MNPT1-1/2"
• Flange: UNI DN80…DN150
• Mounting bracket

Max Measuring Range

50 m (164 ft)

Communication

4…20 mA HART

PROFIBUS PA

PROFINET (Ethernet-APL)

Bluetooth wireless & SmartBlue App (optional)

Certifications

• Ex: IEC Ex, ATEX, CSA C/US, EAC Ex, NEPSI etc.
• Safety: SIL
• Design: ASME B31.3, CRN
• Food: EU 1935/2004, FDA CFR 21
• Marine: ABS, LR, BV, RINA, DNV

Application Limitations

• Not suitable for DK < 1.6
• Reduced range for media with poor reflection, steep repose angle, extremely loose/low density/moist or sticky bulk solids
• Alternative for these applications: FMR67B