Liquicap M FMI52

Summary

Product identification

• Product Name: Liquicap M
• Model: FMI52
• Type: Capacitive Level Probe

Application

The Liquicap M FMI52 is designed for continuous level measurement of liquids. It is independent of the dielectric constant (DC) for liquids with a conductivity of 100 µS/cm and above, eliminating the need for recalibration for such media.

• Process Connections: Flanges and threads
• Certificates and Approvals: International explosion protection, WHG (overfill prevention), SIL, hygienic certificates, marine approvals.
• Functional Safety: Suitable for safety systems requiring SIL2 compliance according to IEC 61508.
• Materials: Process-wetted materials are corrosion-resistant, with FDA-listed options available.

Operating limits

• Process Pressure: Vacuum to +100 bar (+1450 psi)
• Temperature: –80 to +200 °C (–112 to +392 °F)
• Measuring Range: 0.42 to 10 m (1.38 to 33 ft)

Feed water

• Conductivity: Measurement is independent of dielectric constant for liquids with conductivity ≥ 100 µS/cm.

Product water

• Not applicable for this product.

Electrical

• Output Signal:
  • FEI50H: 4 to 20 mA / HART protocol version 5 (3.8 to 20.5 mA)
  • FEI57C: PFM output (current pulses 60 to 2800 Hz)
• Supply Voltage:
  • FEI50H: 12.0 to 36.0 VDC (non-hazardous area); 12.0 to 30.0 VDC (hazardous area Ex ia); 14.4 to 30.0 VDC (hazardous area Ex d).
  • FEI57C: 14.8 VDC from associated supply unit.
• Power Consumption:
  • FEI50H: minimum 40 mW, maximum 800 mW.
  • FEI57C: maximum 250 mW.
• Current Consumption:
  • FEI50H: 3.8 to 22 mA (normal); 4 mA (HART multidrop).
  • FEI57C: 60 to 2800 Hz (PFM signal).
• Signal on Alarm:
  • FEI50H: 22 mA output, digital HART error message, LED, and display indication.
  • FEI57C: LED and display indication on switching units.

Mechanical / hydraulic

• Process Connections: Flanges and threads (G, NPT, DIN 11851, Tri-Clamp, Flanges EN1092-1, ANSI B 16.5, JIS B2220).
• Probe Types: Rope probes, including options with fully insulated inactive lengths.
• Materials in contact with process: Probe rope: 316L (1.4401); Probe rope insulation: FEP, PTFE, PFA; Process connection: 316L (1.4435 or 1.4404).
• Housing Materials: Polyester (F16), Stainless Steel (F15, F27), Aluminum (F13, T13).
• Weight: Approximately 4.00 kg to 5.50 kg depending on housing and process connection. Rope probe: 0.04 kg/m.
• Dimensions: Specific dimensions for various housing types are provided in the document.
• Inactive Length: Varies depending on the probe and process connection, specified in millimeters and inches.

---

Disclaimer: This summary is based on the provided text extract. It may not capture all figures, footnotes, or revisions. Contractual data must be verified against the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror