Last Updates: 16/08/2020

E&H Levelflex FMP54 Guided radar measurement Time-of-Flight

Part Number: FMP54 Categories: ,
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  • Levelflex FMP54 for continuous level measurement in liquids under extreme conditions. The process connection with its ceramic-graphite seal safeguards high temperature and high pressure applications as they occur in steam boilers and toxic media like ammonia. The gas tight feedthrough guarantees additional safety. Only the gas phase compensation of the FMP54 gives reliable results in case of gas and steam phases. Reliable measurement in case of moving surface and foam or in changing medias.

    • Reliable measurement even for changing product and process conditions
    • HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
    • Highest reliability due to new Multi-Echo Tracking evaluation
    • Hardware and software developed according to IEC 61508 up to SIL3
    • 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 for SIL and WHG saves time and costs

    Version with rod, rope or coax probe.

    • Process connections: Thread or flange
    • Temperature: -196 to +450°C (-320 to +842°F)
    • Pressure: -1 to +400bar (-14.5 to +5,800psi)
    • Maximum measuring range: Rod 10m (33ft), rope 45m (148ft), coax 6m (20ft)
    • Accuracy: rod ±2mm (0.08″)
    • International explosion protection certificates, overfill prevention WHG, SIL, marine approval, steam boiler approval, 5-point linearity protocol
    • Measuring principle

      Guided radar

    • Characteristic / Application

      Premium device high pressure/ high temperature 

      Rod probe, Rope probe, Coaxial Probe 

      Integrated data memory, Factory precalibrated, Reliable measuring: in case of moved surface + foam, for changing medias

    • Interface measurement

      Clean interfaces liquid/ liquid; 

      Simultaneous measurement of interface and overall level

    • Specialities

      Heartbeat Technology,

      Bluetooth® commissioning,

      Operation and maintenance SmartBlue App,


      RFID TAG for easy identification

    • Supply / Communication

      2-wire (HART / PROFIBUS PA/ FOUNDATION Fieldbus)

      4-wire (HART)

      Bluetooth® wireless technology and App (optional)

    • Accuracy

      Rod probe: +/- 2 mm (0.08 in) 

      Rope probe <= 15 m (49 ft):

      +/- 2 mm (0.08 in)

      Rope probe > 15 m (49 ft):

      +/- 10 mm (0.39 in)

      Coaxial probe: +/- 2 mm (0.08 in)

    • Ambient temperature

      -50…+80 °C

      (-58…+176 °F)

    • Process temperature

      XT: -196…+280 °C

      (-321…+536 °F)

      HT: -196…+450 °C

      (-321…+842 °F)

    • Process pressure absolute / max. overpressure limit

      Vacuum…400 bar
      (Vacuum…5800 psi)

    • Main wetted parts

      Rod probe:

      304, 316L, Alloy C, Ceramic

      Rope probe: 

      304, 316, 316L, Alloy C, Ceramic 

      Coaxial probe:

      304, 316L, Alloy C, Ceramic

    • Process connection


      G 1 1/2, MNPT 1 1/2


      ASME 2″…4″,


      JIS 10K, 63K,



    • Sensor length

      Rod probe: 10 m (33 ft) 

      Rope probe: 45 m (148 ft) 

      Coaxial probe: 6 m (20 ft)

    • Max. measurement distance


      10 m (33 ft) Min DK>1.6


      25 m…30 m (82 ft…98 ft) Min DK>1.6;

      30 m…45 m (98 ft…148 ft) Min DK >1,9

      Coaxial probe: 6 m (20 ft) Min DK>1.4

    • Communication

      4…20 mA HART 


      FOUNDATION Fieldbus

      Bluetooth® wireless technology

    • Certificates / Approvals


    • Safety approvals

      Overfill prevention WHG


    • Design approvals

      EN 10204-3.1

      NACE MR0175, MR0103

      ASME B31.1, B31.3


      Steam boiler approval

    • Marine approval

      GL/ DNV

    • Options

      Sensor remote with 3 m/ 9 ft cable,

      Remote operation via SmartBlue App using Bluetooth®

    • Application limits

      Horizontal storage tank cyl.: 
      use coax probe

      Interface measurement: Use coax system in favor (coax probe, bypass, stilling well) 

      Interface with emulsion: FMP55

    Datasheet: Levelflex FMP51, FMP52, FMP54 Technical Information

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