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Compact Ultrasonic Level Transmitter Prosonic FMU41

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Compact Ultrasonic Level Transmitter Prosonic FMU41 series
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Description

Application

The Prosonic FMU41 is designed for non-contact level measurement in liquids, pastes, coarse bulk materials, and for flow measurement in open channels or at weirs. This versatile compact transmitter, available in two-wire or four-wire configurations, is ideal for use in storage tanks, with agitators, on stockpiles, and conveyor belts. It features an on-site display that can show the envelope curve for straightforward diagnostics. Additionally, it includes a linearization function (up to 32 points) that allows for conversion of the measured values into any desired unit of length, volume, or flow rate.

  • Configuration: Two-wire or four-wire setup for continuous, non-contact level and flow measurement.
  • Process Connection: Threaded
  • Temperature Range: -40 to +80°C (-40 to +176°F)
  • Pressure Range: +0.7 to +3 bar (+10 to +44 psi)
  • Maximum Measuring Distance: 8m (26ft) for liquids, 3.5m (11ft) for solids
  • Blocking Distance: 0.35m (1.15ft) for both liquids and solids
  • Certifications: International explosion protection certificates

 


 

Benefits

  • Dependable Non-Contact Measurement: Ensures accurate readings without physical contact with the medium.
  • Easy Setup and Operation: Quick commissioning through a user-friendly, menu-guided on-site interface with a four-line plain text display available in seven languages.
  • Diagnostic Capabilities: On-site display of envelope curves for straightforward diagnostics.
  • Robust Design: Features a hermetically sealed and potted sensor made from chemically resistant PVDF material.
  • Simplified Calibration: Allows calibration without the need to fill or empty the vessel.
  • Integrated Temperature Sensor: Automatic correction of temperature-dependent sound velocity ensures consistent accuracy.

SPECIFICATIONS

Pressure Specifications

Measuring principle Ultrasonic
Characteristic / Application Compact ultrasonic transmitter
Supply / Communication 2-wire HART
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 / 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)
Max. measurement distance

Liquids: 8 m (26 ft),

Solids: 3.5 m (11 ft)

Communication

4...20 mA HART
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

Continuous / Solids Specifications

Measuring principle Ultrasonic
Characteristic / Application Compact ultrasonic transmitter
Supply / Communication 2-wire HART
Accuracy +/- 2 mm or +/- 0,2 % of set measuring range 1)
Ambient temperature

-40 °C ... 80 °C

(-40 °F ... 176 °F)

Process temperature

-40 °C ... 80 °C

(-40 °F ... 176 °F)

Process pressure / 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)
Max. measurement distance

Liquids: 8 m (26 ft),

Solids: 3.5 m (11 ft)

Communication 4...20 mA HART
Certificates / Approvals ATEX, FM, CSA, TIIS, INMETRO, NEPSI
Application limits Take notice of range diagram

Take notice of range diagram

 

Measuring principle Ultrasonic
Product headline

Compact ultrasonic measuring instrument

Cost effective solution for open channels

Max. measurement error Low accuracy
Measuring range Measuring distance 0,4...8m [1.3...26ft]
Max. process pressure atm.
Medium temperature range

-40°C...80°C

(-40°F...176°F)

Degree of protection IP68
Outputs 4...20mA(Hart),PA,FF
Inputs

2-wire 16-36V DC

4-wire 16-36V DC

90-253V AC 50/60Hz

Digital communication PROFIBUS PA, FOUNDATION Fieldbus
Hazardous area approvals ATEX, FM, CSA

 

Documents

You may want to read this product's catalog. If so, please click to view the Endress+Hauser Ultrasonic measurement Time of Flight Prosonic FMU41 Series datasheet.
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