Prosonic S FDU90

Summary

Product Identification

• Product Name: Prosonic S FDU90
• Type: Ultrasonic sensor for level measurement and flow measurement
• Document: TI01469F/00/EN/02.21

Application

• Continuous, non-contact level measurement of liquids and bulk solids in:
  • Silos
  • Conveyor belts
  • Material stockpiles
  • Crushers
• Flow measurement in open flumes and measuring weirs.

Operating Limits

• Maximum measuring range:
  • Liquids: 3 m (9.8 ft)
  • Bulk solids: 1.2 m (3.9 ft)
• Process temperature: –40 to +80 °C (–40 to +176 °F)
• Process pressure: 0.7 to 4 bar (10.15 to 58 psi)
• Blocking distance:
  • FDU90 without flooding protection tube: 0.07 m (0.23 ft)
  • FDU90 with flooding protection tube: See diagram
• Operating frequency: 90 kHz
• Maximum distance between sensor and transmitter: 300 m (984 ft)

Feed Water (Implied by Application)

• Liquids and bulk solids.

Product Water (Implied by Application)

• Not applicable, this is a sensor.

Electrical

• Supply voltage: Provided by the transmitter (FMU90/FMU95).
• Sensor heater (optional):
  • Supply voltage: 24 VDC ± 10 %
  • Residual ripple: < 100 mV
  • Current consumption: 250 mA per sensor
  • Suitable power supply unit: RNB130 from Endress+Hauser
  • When the sensor heater is active, an external temperature sensor (Pt100 or Omnigrad S TR61) must be used.
• Electromagnetic compatibility: Meets requirements of EN 61326 series and NAMUR Recommendation EMC (NE 21). Designed for use in an "industrial environment".

Mechanical / Hydraulic

• Degree of protection: IP68 / NEMA6P (Tested according to 24 h at 1.83 m (6 ft) under water)
• Sensor housing material: PVDF
• Weight:
  • Excluding flooding protection tube (5 m cable): approx. 0.9 kg (1.98 lb)
  • Including flooding protection tube (5 m cable): approx. 1.0 kg (2.21 lb)
• Connection threads: G1", G1-1/2", NPT1", NPT1-1/2" (depending on version)
• Nozzle mounting: Maximum nozzle lengths are specified for various diameters (DN50 to DN300) and mounting types (rear thread or flush mounting).

Environmental

• Storage temperature: Identical to process temperature (–40 to +80 °C)
• Vibration resistance: DIN EN 60068-2-64; 20 to 2 000 Hz; 1 (m/s²)²/Hz; 3x100 min
• Thermal shock resistance: Based on DIN EN 60068-2-14; test according to min./max. process temperature; 0.5 K/min; 1 000 h.

Certificates and Approvals

• CE mark
• RoHS (2011/65/EU)
• RCM-Tick marking
• Ex approval: Available (see Product Configurator)

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