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Liquicap FMI51 Capacitive level Measurement is an Ideal Solution

Specifications

  • Measuring Principle:
    Capacitive
  • Accuracy:
    Repeatability: ±0.1%
    Linearity Error for Conductive Liquids: <0.25%
  • Max Measurement Distance:
    0.1 m to 4.0 m (0.3 ft to 13 ft)
  • Process Temperature:
    -80°C to 200°C (-112°F to 392°F)
  • Process Pressure:
    Vacuum to 100 bar (Vacuum to 1450 psi)
  • Ambient Temperature:
    -50°C to +70°C (-58°F to +158°F)
  • Main Wetted Parts:
    Insulation materials: PTFE, PFA
    Stainless steel: 316L
  • Field of Application
    The Liquicap FMI51 is designed for continuous level monitoring of liquids, especially in applications involving build-up forming media and extreme temperature conditions. The system operates independently of the dielectric constant for liquids with a conductivity of 100μS/cm or higher, allowing for versatile usage without recalibration.

Applications

Level monitoring in storage tanks and process vessels
Integration with Fieldgate FXA320 for remote measured value interrogation

Benefits

  • Safety Compliance:
    Suitable for use in safety systems requiring functional safety to SIL2 as per IEC 61508.
  • Wide Range of Approvals:
    Numerous international explosion protection certificates, overfill prevention WHG, and hygienic certificates ensure reliable operation across various applications.
  • No Calibration Needed:
    Factory preconfiguration eliminates the need for recalibration for conductive liquids.
  • Durable Materials:
    Corrosion-resistant and FDA-listed materials ensure long-term reliability and safety.
  • User-Friendly Configuration:
    Optional menu-guided local configuration with a plain text display.
  • Overvoltage Protection:
    Two-stage overvoltage protection enhances device longevity.
  • Design and Installation:
    Process Connections: Flanges and threads, including G1/2, G3/4, G1, G1 1/2, NPT options, and hygienic connections like Tri-Clamp ISO02852.
  • Inactive Length:
    Maximum inactive length of 2 m (7 ft) with a total sensor length of 6 m (20 ft).
  • Special Features:
    Factory calibrated with a short response time upon changes in measured values.
  • Supply and Communication:
    Supply Voltage: 12-36 V DC
  • Communication Protocols:
    4…20 mA HART, PFM

Approvals and Certificates

  • Explosion Protection:
    ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI, EAC
  • Safety Approvals:
    SIL compliance
  • Hygienic Approvals:
    3A, EHEDG
  • Marine Approvals:
    GL, ABS, DNV
  • Application Limits:
    Restrictions: Not suitable for insufficient clearance toward ceilings or changing, non-conductive media with conductivity < 100 μS/cm. Users should be aware of pressure and temperature derating.
    The Liquicap FMI51 is a robust and versatile solution for continuous level monitoring in challenging industrial environments, with strong compliance to safety standards and a variety of application-specific features.