Prosonic S FMU95

Summary

Product identification

The Prosonic S FMU95 is an ultrasonic transmitter for continuous, non-contact level measurement of fluids, pastes, sludge, and bulk materials. It supports up to 10 ultrasonic sensors (FDU90/91/91F/92/93/95).

Operating limits

• Measuring range: Up to 45 m (148 ft), depending on the sensor and material.
• Blocking distance: Level echoes within the blocking distance range cannot be evaluated. Blocking distances for individual sensors are detailed in TI00396F.

Feed water (Material Measured)

• Suitable for fluids, pastes, sludge, and powdery to coarse bulk materials.

Product water (Transmitter Output)

• Transmittable values via PROFIBUS DP: Main value (level 1 to 10), Distances, Temperatures, Averages/sums.
• Function blocks: 20 Analog Input Blocks (AI).

Electrical

• Supply voltage:
  • AC version: 90 to 253 VAC (50/60 Hz)
  • DC version: 10.5 to 32 VDC
• Power consumption:
  • AC version: max. 23 VA
  • DC version: max. 14 W (typically 8 W)
• Current consumption:
  • AC version: max. 100 mA at 230 VAC
  • DC version: max. 580 mA at 24 VDC
• Galvanic isolation: Between auxiliary energy, sensor inputs, and bus connection (PROFIBUS DP).
• Fuse:
  • 400 mA T /AC
  • 2 A T /DC

Mechanical / hydraulic

• Housing versions:
  • Field housing (optional integrated display)
  • DIN rail mounting housing (optional integrated display)
  • DIN rail mounting housing with separate display and operating module
• Ingress protection:
  • Field housing: IP66 / NEMA 4x
  • DIN rail housing: IP20
  • Separate display: IP65 / NEMA 4 (front panel), IP20 (rear panel)
• Materials:
  • Field housing: PC-FR
  • DIN rail housing: PBT-GF
  • Separate display and operating module: PC

Performance characteristics

• Reference operating conditions: Temperature 24±5 °C, Pressure 960±100 mbar, Relative humidity 60±15 %.
• Maximum measuring error: ±0.2 % of the maximum span.
• Typical measuring error: Better than ±2 mm (0.08 in) + 0.17 % of the measured distance (includes linearity, repeatability, and hysteresis).
• Measured value resolution: 1 mm (0.04 in) with FDU90/FDU91.
• Measuring frequency: 0.2 Hz (5 sensors), 0.1 Hz (10 sensors).

Operating conditions: Environment

• Ambient temperature: −40 to +60 °C (−40 to +140 °F).
• Storage temperature: −40 to +60 °C (−40 to +140 °F).
• Climate class:
  • Field housing: DIN EN 60721-3 4K2/4K5/4K6/4Z2/4Z5/4C3/4S4/4M2
  • DIN rail housing: DIN EN 60721-3 3K3/3Z2/3Z5/3B1/3C2/3S3/3M1
• Vibration resistance:
  • DIN rail housing: DIN EN 60068-2-64; 20 to 2000 Hz; 0.5 (m/s²)²/Hz
  • Field housing: DIN EN 60068-2-64; 20 to 2000 Hz; 1.0 (m/s²)²/Hz
• Electromagnetic compatibility (EMC): According to EN 61326- series and NAMUR recommendation EMC (NE21). Meets class A requirements for industrial environments.

Human interface

• Display and operating module: 6-line plain text display, 15 languages selectable.
• Operation: Menu-guided, softkey operation.
• Diagnosis: Envelope curves on display, "FieldCare" operating program.
• Linearization: Up to 32 points, freely configurable.
• Locking: Via switch, key combination, or software code.

Certificates and Approvals

• CE mark: Confirms compliance with EC directives.
• Ex approval: Available certificates are listed in ordering information; requires strict adherence to associated safety instructions (XA) and control drawings (ZD).

Documentation

• Technical Information: TI00396F (for sensors FDU90/91/91F/92/93/95).
• Operating Instructions: BA00344F, BA00345F (Description of Instrument Functions), BA00346F (Slot-Index tables).
• Safety Instructions: XA00326F (for ATEX II 3D).

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror