
Specs at a glance
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Accuracy
+/- 1 mm
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Process temperature
-40°C...200°C
(-40°F...392°F) -
Process pressure absolute / max. overpressure limit
Horn: Vacuum...16 bar (232 psi)
Parabolic: Vacuum...6 bar (87 psi)
Use of UNIflange: Vacuum...1 bar (14.5 psi) -
Max. measurement distance
Max. measurement distance
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Main wetted parts
316L
Field of application
Micropilot FMR540 is used for custody transfer and inventory control applications with NMi- and PTB-approvals and meets the requirements according to OIML R85 and API 3.1B. FMR540 with parabolic antenna is particularly suited for free space applications up to 40m and with horn antenna for free space applications that disallow the use of a parabolic antenna due to tank/nozzle geometry. Cost-effective and simple installation via 4-wire cable with HART and 24 V DC intrinsically safe power supply.
Parabolic antenna suited for free space applications up to 40m offers high beam focusing for applications with nozzle situated close to tank wall, 4"/DN100 horn antenna suited for free space applications.
Process connection: Flange
Temperature: -40 to +200°C (-40 to +392°F)
Pressure: Vacuum to +16bar (Vacuum to +232psi)
Maximum measuring range: 40m (131ft)
Accuracy: Better than ±1mm
K-band: 26GHz
International explosion protection and custody transfer certificates, overfill prevention WHG, SIL
Benefits
Better than 1mm accuracy
National approvals (NMi, PTB) for custody transfer
Applicable as stand-alone system or integrated into tank gauging systems via the Tank Side Monitor NRF590
Cost-effective and simple installation via 4-wire cable with HART and 24 V DC intrinsically safe power supply
Alignment device to compensate any flange inclination
Easy on-site operation via menu-driven alphanumeric display
Easy commissioning, documentation and diagnostics via operating software (FieldCare)
Videos
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Time-of-Flight measuring principle
Xpert selection
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
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Simplicity
Variable |
Predecessor
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Measuring principle
Level radar
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Characteristic / Application
Horn antenna:
High precision measurement for for storage tanks up to 20 m (65ft)
Parabolic antenna:
High precision measurement for free space applications up to 40 m (131 ft) -
Supply / Communication
4-wire (HART)
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Frequency
K-band (~26 GHz)
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Accuracy
+/- 1 mm
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Ambient temperature
Standard:
-40°C...80°C
(-40°F...176°F)
For calibration to regulatory standards:
-25°C...60°C
(-13°F...131°F) -
Process temperature
-40°C...200°C
(-40°F...392°F) -
Process pressure absolute / max. overpressure limit
Horn: Vacuum...16 bar (232 psi)
Parabolic: Vacuum...6 bar (87 psi)
Use of UNIflange: Vacuum...1 bar (14.5 psi) -
Main wetted parts
316L
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Process connection
Horn Antenna: DN100, DN150 Flange
UNIFlange DN150, DN200, DN250
Parabolic antenna: UNIflange with Top Target
positioner DN200, DN250
For dk value < 1.9, contact Endress+Hauser -
Max. measurement distance
Max. measurement distance
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Communication
4...20 mA HART
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Certificates / Approvals
ATEX, FM, CSA, IEC Ex, NEPSI
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Application limits
Maximum measuring range is dependent on the tank form and/or application
Strong condensate or build-up formation
FMR53x
Existing stilling wells with non-ideal measuring conditions
FMR532
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