Radar measurement
Time-of-Flight
Micropilot FMR51

The standard sensor for highest demands in liquid level measurement

FMR51 -

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Micropilot FMR51 stainless steel housing

Specs at a glance

Accuracy

+/- 2 mm (0.08 in)
Process temperature

XT: -196...+280 °C
(-321...+536 °F)
HT: -196...+450 °C
(-321...+842 °F)
Process pressure / max. overpressure limit

Vacuum...160 bar
(Vacuum...2320 psi)
Max. measurement distance

Standard: 40 m (131 ft)
With "Advanced dynamics": 70 m (230 ft)
Main wetted parts

316L, Alloy C, PTFE, ceramic

See all specifications

Field of application

Micropilot FMR51 for level measurement even under extreme process conditions like high temperature and high pressure in the oil & gas and chemical industry. The FMR51 free space radar offers maximum reliability due to an innovative and patented sensor-design. Micropilot is used for continuous, non-contact level measurement of liquids, pastes and slurries. The measurement is not affected by changing media, temperature changes, gas blankets or vapors. Remote access via SmartBlue app is available.

Horn antenna for level measurement even under extreme conditions.

Process connections: Thread, Tri-Clamp or flange
Temperature: -196 to +450°C (-321 to + 842°F)
Pressure: -1 to +160bar (-14.5 to +2,320psi)
Maximum measuring range: 40m (131ft), 70m (230ft) for enhanced dynamics
Accuracy: ±2mm
K-band: 26GHz
International explosion protection certificates, overfill prevention WHG, SIL, marine approvals, 5-point linearity protocol
Remote access with SmartBlue App via Bluetooth® is available

Benefits

Hardware and software developed according to IEC 61508 up to SIL3 (in homogeneous redundancy)
HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
Highest reliability even in the presence of obstructions in the vessel due to new Multi-Echo Tracking evaluation
Heartbeat Technology for a cost-effective and safe plant operation during the entire life cycle
Seamless integration into control or asset management systems and intuitive, menu-guided operation concept (on-site or via the control system)
World's easiest proof test concept for SIL and WHG saves time and cost
Highest safety due to double ceramic coupling and gas-tight feedthrough

Videos

00:00

Time-of-Flight measuring principle
00:00

Commissioning movie for Micropilot FMR5x free space radar and Levelflex FMP5x guided radar
00:00

Unique HistoROM data management concept for safe level measurement
00:00

Continuous adapting algorithms offering safe level measurement due to Multi-Echo Tracking
00:00

Micropilot with Advanced Dynamics offering more reliable measuring signals even in the case of turbulences
00:00

Micropilot FMR5x with Advanced Diagnostic functions offers foam detection

Extended selection

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Predecessor

Micropilot M FMR240

Success stories

Optimized logistics concept for tank systems

We implemented a highly effective logistics concept at chemicals distributors Brenntag Schweizerhall AG's Basel site.
Read the full story
Time saved, safety increased

Employees of Returkraft regularly have to fulfill and document all requirements of the SIL measuring points in the plant.
Read the full story
Fit for purpose instrumentation for CNG compressors

The Egyptian government is working to replace liquid fuels with natural gas. To achieve this they targeted increasing the number of CNG stations in their country from 306 to 1000 by the end of 2021.
Read the full story
Extend SIL proof test intervals with new Liquiphant FTL51

Discover how our customer CABB was able to extend SIL proof test intervals with the new Liquiphant FTL51
Read the full story
Energy efficiency in practice

Energy efficiency in practice – universal target agreement and exemption from the CO₂ tax at Temmentec AG
Read the full story

Could also interest you

Media
Dielectric constant - Competence Brochure

Competence Brochure - Dielectric constant
More information

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Radar measurementTime-of-FlightMicropilot FMR51

The standard sensor for highest demands in liquid level measurement

Specs at a glance

Accuracy

Process temperature

Process pressure / max. overpressure limit

Max. measurement distance

Main wetted parts

Field of application

Benefits

Videos

Extended selection

Predecessor

Success stories

Optimized logistics concept for tank systems

Time saved, safety increased

Fit for purpose instrumentation for CNG compressors

Extend SIL proof test intervals with new Liquiphant FTL51

Energy efficiency in practice

Could also interest you

Dielectric constant - Competence Brochure

Measuring principle

Characteristic / Application

Specialities

Supply / Communication

Frequency

Accuracy

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Main wetted parts

Process connection

Process connection hygienic

Max. measurement distance

Communication

Certificates / Approvals

Safety approvals

Design approvals

Marine approval

Options

Application limits

Back

Micropilot FMR51, FMR52

Micropilot FMR51, FMR52 PROFIBUS PA Operating Instructions

Micropilot FMR51, FMR52 HART Operating Instructions

Micropilot FMR51, FMR52 FOUNDATION Fieldbus Operating Instructions

Micropilot FMR50, FMR51, FMR52, FMR53, FMR54, FMR56, FMR57 PROFIBUS PA Description of Device Parameters

Micropilot FMR50, FMR51, FMR52, FMR53, FMR54, FMR56, FMR57 FOUNDATION Fieldbus Description of Device Parameters

Micropilot FMR5x HART Description of Device Parameters

Micropilot FMR51, FMR52 PROFIBUS PA

Micropilot FMR51, FMR52 HART

Micropilot FMR51, FMR52 FOUNDATION Fieldbus

Back

Housing filter 316L, GT18, 1 set

Housing filter Brass/Ni GT19/20, 1 set

Set housing securing clamps

Cover GT18 316L, HNBR

Cover GT18 316L, sight glass, HNBR

Cover GT19 PBT, sight glass, EPDM

Cover GT19 PBT, EPDM

Cover GT20 Alu, sight glass, HNBR

Cover GT20 Alu, HNBR

Cover GT18 316L, FVMQ

Cover GT18 316L, sight glass, FVMQ

Cover GT20 Alu, FVMQ

Cover GT20 Alu, sight glass, FVMQ

Cover GT18 316L, terminal Ex d, HNBR

Cover GT18 316L, terminal Ex, HNBR

Cover GT19 PBT, Terminal Ex, EPDM

Cover GT20 Alu, Terminal Ex, HNBR

Cover GT20 Alu, Terminal Ex d, HNBR

Cover GT18 316L, Terminal, OVP, HNBR

Cover GT20 Alu, Terminal, OVP, HNBR

Cover GT19 PBT, Terminal, OVP, EPDM

Cover GT18 316L, terminal Ex, FVMQ

Cover GT18 316L, terminal Ex d, FVMQ

Cover GT18 316L, Terminal, OVP, FVMQ

Cover GT20 Alu, Terminal Ex, FVMQ

Cover GT20 Alu, Terminal Ex d, FVMQ

Cover GT20 Alu, Terminal, OVP, FVMQ

Radar measurement
Time-of-Flight
Micropilot FMR51

Gateway for
measurement values
Fieldgate FXA42