Prosonic S FDU93

Summary

Product identification

• Product Name: Prosonic S FDU93
• Product Type: Ultrasonic sensor for level and flow measurement
• Document Number: TI01473F/00/EN/01.20
• Date: 2020-09-14

Application

• Continuous, non-contact level measurement of liquids and bulk solids in silos, on conveyor belts, in material stockpiles, and in crushers.
• Flow measurement in open flumes and measuring weirs.

Operating limits

• Maximum measuring range:
  • 25 m (82 ft) in liquids
  • 15 m (49 ft) in bulk solids
• Process temperature:
  • Non-Ex: –40 to +95 °C (–40 to +203 °F)
  • Ex: –40 to +80 °C (–40 to +176 °F)
• Process pressure: 0.7 to 3 bar (10.15 to 43.5 psi)

Feed water

• Blocking distance: Signals within the blocking distance cannot be measured.

Product water

• Not applicable.

Electrical

• Supply voltage: Provided by the transmitter (FMU90 or FMU95).
• Potential equalization: Yellow/green protective conductor (GNYE) of the sensor must be connected to local potential equalization after a maximum distance of 30 m (98 ft).
• Electromagnetic compatibility: Meets EN 61326 series and NAMUR Recommendation EMC (NE 21). Designed for use in an "industrial environment".

Mechanical / hydraulic

• Degree of protection: IP68 / NEMA6P (tested for 24 h at 1.83 m (6 ft) under water).
• Vibration resistance: DIN EN 60068-2-64; 20 to 2,000 Hz; 1 (m/s²)²/Hz; 3x100 min.
• Storage temperature: Identical to process temperature.
• Thermal shock resistance: Based on DIN EN 60068-2-14.
• Dimensions: See datasheet drawing.
• Weight: Approx. 2.9 kg (6.39 lb) including 5 m (16 ft) cable.
• Materials:
  • Sensor housing: UP (unsaturated polyester resin)
  • Cable gland: CuZn nickel-plated
  • Pipe adapter: CuZn nickel-plated
  • O-ring: VMQ
  • Seal: VMQ
  • Screws: V2A
  • Nameplate: 304 (1.4301)
  • Sensor membrane: aluminum, PFA-coated
• Materials of connecting cable: PVC
• Extension cable specifications:
  • Maximum total length (sensor + extension): 300 m (984 ft)
  • Cross-section: 0.75 to 2.5 mm² (18 to 14 AWG)
  • Resistance: Max. 8 Ω per wire
  • Capacitance, wire to shield: Max. 60 nF

Certificates and approvals

• CE mark
• RoHS compliant
• RCM-Tick marking
• Ex approval: Available (refer to Product Configurator for details)

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or revisions. Contractual data must be confirmed against the official OEM PDF revision used for the specific project.

Official datasheet (PDF)

Lenntech datasheet mirror