Endress+Hauser Micropilot FMR60B – 80 GHz Radar Level Sensor

The Endress+Hauser Micropilot FMR60B is an advanced 80 GHz free-space radar level sensor for continuous, non-contact level measurement in liquids, pastes and slurries. It combines high measurement accuracy with a focused radar beam, making it particularly suitable for vessels with small process connections or numerous internal fittings.

With measurement accuracy up to ±1 mm and a maximum measuring distance of 50 m, the FMR60B provides a high-performance solution for demanding continuous level measurement applications.

80 GHz Radar with ±1 mm Accuracy

The FMR60B operates in the W-band at approximately 80 GHz. The high operating frequency enables a strongly focused radar beam, helping the sensor achieve reliable measurement in vessels where installation space is limited or internal components could otherwise interfere with the radar signal.

Key measurement performance:

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  Measuring principle: Free-space radar
  
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  Frequency: W-band, approximately 80 GHz
  
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  Accuracy: ±1 mm
  
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  Maximum measuring distance: 50 m
  
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  Process temperature: –40 to +200°C
  
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  Process pressure: Vacuum to 20 bar
  
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  Ambient temperature: –40 to +85°C
  
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  Main wetted materials: PVDF, PTFE or PEEK
  

Narrow Radar Beam for Vessels with Internal Fittings

One of the key advantages of the FMR60B is its highly focused radar beam.

A narrow beam helps reduce the possibility of interference from tank internals such as pipes, heating coils, supports and other structures. This makes the FMR60B particularly useful where conventional radar installation can be challenging because of the vessel geometry.

The sensor is also designed for applications with small process connections, providing flexibility when installation space is restricted.

Non-Contact Measurement for Liquids, Pastes and Slurries

The FMR60B measures level without physical contact between the sensor and the process medium.

This makes radar technology particularly attractive when the process involves:

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  Changing media
  
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  Temperature differences
  
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  Gas phases
  
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  Steam
  
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  Difficult-to-access vessels
  
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  Corrosive or challenging process media
  

Endress+Hauser specifies the FMR60B for continuous non-contact level measurement in liquids, pastes and slurries and notes that measurement is not influenced by changing media, temperature differences, gas phases or steam.

Up to 50 m Measuring Range

With a maximum measuring distance of 50 m, the FMR60B can be used in relatively tall tanks and vessels.

The combination of long measuring range and narrow beam focusing makes it suitable for applications where both measurement distance and installation geometry are important.

Maximum range: 50 m / 164 ft

High-Temperature and Pressurized Applications

The FMR60B supports process temperatures from –40 to +200°C and process pressures from vacuum up to 20 bar.

This allows the instrument to cover a broad range of industrial liquid level applications while maintaining non-contact radar measurement.

For applications requiring temperatures above 200°C or more aggressive media, Endress+Hauser identifies the Micropilot FMR62B as the corresponding alternative within the product family.

Simple Commissioning with Guided Wizards

The FMR60B is designed to simplify commissioning and device operation.

Built-in wizards guide users through commissioning, verification and proof testing. The device can also provide recommended actions on the display to support troubleshooting and maintenance.

This guided approach can help reduce commissioning complexity, especially when multiple radar devices are being installed across a process plant.

Heartbeat Technology for Verification and Diagnostics

The FMR60B incorporates Heartbeat Technology, providing verification, monitoring and diagnostic functions during operation.

Heartbeat functions can help identify anomalies and support verification without interrupting normal process operation, contributing to improved measurement confidence and process availability.

Flexible Communication and Digital Operation

The FMR60B supports several communication technologies for integration into industrial control and asset management systems.

Communication options include:

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  4–20 mA HART
  
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  PROFIBUS PA
  
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  PROFINET with Ethernet-APL
  
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  Bluetooth® wireless technology
  
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  SmartBlue App for commissioning and operation
  

Optional Bluetooth communication allows convenient device access through the SmartBlue App, simplifying commissioning and maintenance tasks.

Designed for Safety and Industrial Applications

Depending on the selected configuration, the FMR60B is available with a range of international approvals and safety functions.

Available options include:

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  SIL 2
  
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  WHG overfill protection
  
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  ATEX
  
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  IECEx
  
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  CSA C/US
  
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  EAC Ex
  
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  JPN Ex
  
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  KC Ex
  
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  INMETRO Ex
  
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  NEPSI Ex
  
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  UK Ex
  
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  Marine approval
  
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  EN 10204 3.1
  
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  ASME B31.3 declaration
  
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  CRN approval
  

Typical Applications

The Micropilot FMR60B is well suited to continuous level measurement in:

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  Storage tanks
  
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  Process vessels
  
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  Liquid tanks
  
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  Pastes and slurries
  
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  Vessels with numerous internal fittings
  
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  Applications requiring small process connections
  
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  Applications with steam or gas phases
  
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  High-temperature liquid processes
  

Its combination of 80 GHz technology, ±1 mm accuracy and up to 50 m range makes it a strong choice for precision non-contact level measurement.

Frequently Asked Questions

What is the Endress+Hauser Micropilot FMR60B used for?

The FMR60B is designed for continuous non-contact level measurement in liquids, pastes and slurries. It is particularly suitable for vessels with small process connections or many internal fittings.

What frequency does the FMR60B use?

The FMR60B operates at approximately 80 GHz in the W-band, providing a highly focused radar beam.

What is the accuracy of FMR60B?

The FMR60B offers an accuracy of up to ±1 mm.

What is the maximum measuring range?

The maximum measuring distance is 50 m (164 ft).

What temperature can FMR60B handle?

Depending on configuration, the FMR60B supports process temperatures from –40 to +200°C.

What is the maximum process pressure?

The specified process pressure range is from vacuum to 20 bar.

Can FMR60B be used in vessels with internal structures?

Yes. Its highly focused 80 GHz radar beam is specifically advantageous for vessels containing many internal fittings.