Endress+Hauser Prosonic FMU41 Ultrasonic measurement Time-of-Flight

• Reliable non-contact measurement
• Quick and simple commissioning via menu-guided on-site operation with four-line plain text display, 7 languages selectable
• Envelope curves on the on-site display for simple diagnosis
• Hermetically sealed and potted sensor
• Chemically resistant sensor out of PVDF
• Calibration without filling or discharging
• Integrated temperature sensor for automatic correction of the temperature dependent sound velocity

Two-wire or four wire instrument for continuous non-contact level and flow measurement.

• Process connection: Thread
• Temperature: -40 to +80°C (-40 to +176°F)
• Pressure: +0.7 to +3bar (+10 to +44psi)
• Maximum measuring distance: Liquids 8m (26ft), Solids 3.5m (11ft)
• Blocking distance: Liquids and Solids 0.35m (1.15ft)
• International explosion protection certificates

• Measuring principle

  Ultrasonic

• Characteristic / Application

  Compact ultrasonic transmitter

• Supply / Communication

  2/4-wire (HART), PROFIBUS PA, FOUNDATION Fieldbus

• Accuracy

  +/- 2 mm or +/- 0,2 % of set measuring range

• Ambient temperature

  -40 °C … 80 °C 
  (-40 °F … 176 °F)

• Process temperature

  -40 °C … 80 °C
  (-40 °F … 176 °F)

• Process pressure absolute / max. overpressure limit

  0.7 bar … 3 bar abs
  (10 psi … 44 psi)

• Main wetted parts

  PVDF

• Process connection

  G / NPT 2″

• Blocking distance

  0.35 m (1.15 ft)

• Application

   

• Max. measurement distance

  8 m (26 ft)

• Communication

  4 … 20 mA HART
  PROFIBUS PA
  FOUNDATION Fieldbus

• Certificates / Approvals

  ATEX, FM, CSA, TIIS, INMETRO, NEPSI

• Application limits

  For higher resistance:

  FMU42/FDU9x

  Foam / high turbulence possible:

  FMU42/FDU91

  Fast filling and discharging rate:

  FMU90 + FDU9x

  Level limit detection:

  FMU90 + FDU9x

Datasheet: Prosonic M FMU40,41,42,43,44 Technical Information