Prosonic FMU42

Summary

Product identification

• Product Name: Prosonic M FMU42
• Technology: Ultrasonic measuring technology
• Type: Compact transmitter for non-contact level and flow measurement

Application

• Two-wire version for non-contact level and flow measurement
• Process connection: thread
• International explosion protection certificates available.

Operating limits

• Temperature: –40 to 80 °C (–40 to 176 °F)
• Pressure: 0.7 to 2.5 bar (10.15 to 36.25 psi)

Feed water (Process conditions)

• Process temperature range: –40 to +80 °C (–40 to +176 °F)
• Process pressure range: 0.7 to 2.5 bar abs. (10.15 to 36.25 psi)

Product water (Measurement capabilities)

• Measured variable: Distance D between sensor membrane and product surface. Calculated values include Level (L), Volume (V), and Flow (Q).
• Maximum measuring range:
  • Liquids: 10 m (33 ft)
  • Bulk solids: 5 m (16 ft)
• Blocking distance: 0.4 m (1.3 ft) for liquids and bulk solids.
• Measured value resolution: 2 mm (0.08 in)
• Maximum measured error: ±0.2 % of the maximum sensor span under reference operating conditions.
• Measuring error: Better than ±4 mm (±0.16 in) or 0.2 % of the measuring distance, whichever is larger.
• Response time (Two-wire version): ≥ 2 s (minimum values)
• Pulse frequency (Two-wire version): ≤ 0.5 Hz
• Accuracy influenced by gas phase: Very good accuracy for media with vapor pressure < 50 mbar at 20 °C. Accuracy may be impacted by high vapor pressures or outgassing media (e.g., ethanol, acetone, ammonia).

Electrical

• Output signal: 4 to 20 mA with HART protocol
• Load: Minimum load for HART communication: 250 Ω
• Output damping: User-defined, 0 to 255 s
• Supply voltage (Two-wire version):
  • Standard: 14 to 36 V
  • Ex ia: 8 to 30 V
  • Ex d: 11 to 30 V
• Power consumption (Two-wire version): 51 to 800 mW
• Current consumption (Two-wire version): 3.6 to 22 mA
• HART ripple: 47 to 125 Hz: Uss = 200 mV (at 500 Ω)
• HART noise: 500 Hz to 10 kHz: Ueff = 2.2 mV (at 500 Ω)

Mechanical / hydraulic

• Process connections: Universal flange DN 80 PN16 / ANSI 3" 150 lbs / JIS 10K 80 and DN 100 PN16 / ANSI 4" 150 lbs / JIS 16K 100. Mounting bracket also available.
• Weight: Approximately 3 kg (6.62 lb)
• Materials in contact with process: Sensor: PVDF; Seal: EPDM or FKM; Flange: PP, PVDF or stainless steel 316L.
• Materials not in contact with process: Housing and cover: AlSi10Mg powder-coated.
• Cable entries: Thread G ½ or NPT ½; Cable gland: M20×1.5.
• Dimensions: See diagrams for F12 housing, T12 housing, sensor, mounting bracket, and flange.

Environment

• Ambient temperature range: –40 to +80 °C (–40 to +176 °F)
• Storage temperature: –40 to +80 °C (–40 to +176 °F)
• Climate class: DIN EN 60068-2-38 (Test Z/AD); DIN/IEC 68 T2-30Db
• Degree of protection: IP68, NEMA 6P (housing closed); IP20, NEMA 1 (housing open, display)
• Vibration resistance: DIN EN 60068-2-64/IEC 68-2-64: 20 to 2 000 Hz, 1 (m/s²)²/Hz; 3 x 100 min

Operability

• Languages: 7 languages supported (de, en, es, fr, ja, it, nl)
• Local operation: With display and operating module (VU331) or via PC with FieldCare.
• Remote operation: With Field Xpert, PC with Commubox FXA195 and FieldCare, or Commubox FXA291 with ToF Adapter FXA291 and FieldCare.

Certificates and approvals

• International explosion protection certificates available. Specific certificates can be selected via the Product Configurator.

Disclaimer

This summary is based on extracted text from a datasheet and may not include all details, figures, footnotes, or revisions. Contractual data must always be verified against the official OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror