 
                  Specs at a glance
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                              Accuracy+/- 2 mm or +/- 0.2 % of set measuring range 1) 
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                              Process temperature-40 °C ... 80 °C 
 (-40 °F ... 176 °F)
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                              Process pressure / max. overpressure limit0.7 bar ... 3 bar abs 
 (10 psi ... 44 psi)
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                              Max. measurement distanceLiquids: 5 m (16 ft), 
 Solids: 2 m (6.6 ft)
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                              Main wetted partsPVDF 
Field of application
The Prosonic FMU40 sensor is suited for non-contact level measurement in fluids, pastes, coarse bulk material and flow measurement in open channels or at weirs. The two-wire or four-wire compact transmitter can be used in applications with storage tanks, agitators, on stockpiles and conveyor belts. The envelope curve can be shown on the on-site display for simple diagnosis. Linearization function (up to 32 points) for conversion of the measured value into any unit of length, volume or flow rate.
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 5m (16ft), Solids 2m (16ft) 
- Blocking distance: Liquids and Solids 0.25m (0.8ft) 
- International explosion protection certificates 
Benefits
- 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 
Videos
Extended selection
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        High-end products 
- Highly functional and convenient
Technical excellence
Simplicity
 
                              - 
        Standard products 
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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        Specialized products 
- Designed for demanding applications
Technical excellence
Simplicity
Variable
| FLEX selections | Technical excellence | Simplicity | 
|---|---|---|
| 
 Fundamental selection Meet your basic measurement needs | Technical excellence | Simplicity | 
| 
 Lean selection Handle your core processes easily | Technical excellence | Simplicity | 
| 
 Extended selection Optimize your processes with innovative technologies | Technical excellence | Simplicity | 
| 
 Xpert selection Master your most challenging applications | Technical excellence | Simplicity Variable | 
Predecessor
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                                                    Operating Instruction (BA)
 Prosonic M FMU40/41/42/43/44English version - 04/2012 Compact transmitters for non-contact level measurements of fluids, pastes and coarse bulk materials EN 02/04/201227/02/200930/05/200803/05/200713/04/2005Language: English Version: 02/04/2012 File size: 3.7 MB File name: BA00239FEN_1312.pdf 
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                                                            Technical Information (TI)
 TI Weld-in adapter, process adapter and flangesLevel, pressure and temperature measurement EN 06/12/202425/03/202415/09/202328/10/202130/07/2021Language: English Version: 06/12/2024 File size: 1.3 MB File name: TI00426FEN_2624.pdf 
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                                                            Technical Information (TI)
 Prosonic M FMU40/41/42/43/44 Technical InformationUltrasonic Level Measurement 
 Compact transmitters for non-contact level measurement of fluids,
 pastes and coarse bulk materialsEN 19/12/201426/06/201416/01/201304/04/201231/03/2011Language: English Version: 19/12/2014 File size: 3.1 MB File name: TI00365FEN_1714.pdf 
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                                                            Technical Information (TI)
 Prosonic M FMU40Ultrasonic measuring technology EN 09/06/2022Language: English Version: 09/06/2022 File size: 1.1 MB File name: TI01456FEN_0121-00.pdf 
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                        - 
                                                            Operating Instruction (BA)
 Prosonic M FMU40/41/42/43/44Compact transmitters for non-contact level measurements of fluids, 
 pastes and coarse bulk materialsEN 02/04/201201/09/200720/07/200614/02/200401/01/2002Language: English Version: 02/04/2012 File size: 1.5 MB File name: BA00240FEN_1312.pdf 
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                        - 
                                                            Operating Instruction (BA)
 Prosonic M FMU40/41/42/43/44Compact transmitters for non-contact level measurements of fluids, 
 pastes and coarse bulk materialsEN 02/04/201227/02/200930/05/200803/05/200713/04/2005Language: English Version: 02/04/2012 File size: 3.7 MB File name: BA00239FEN_1312.pdf 
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                                                            Operating Instruction (BA)
 Prosonic M FMU40 HARTUltrasonic measuring technology EN 09/06/2022Language: English Version: 09/06/2022 File size: 1.8 MB File name: BA01961FEN_0122-00.pdf 
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                                                            Operating Instruction (BA)
 Prosonic M FMU40/41/42/43/44Compact transmitters for non-contact level measurements of fluids, 
 pastes and coarse bulk materialsEN 04/04/201227/02/200903/05/200707/08/200617/07/2006Language: English Version: 04/04/2012 File size: 3.2 MB File name: BA00238FEN_1312.pdf 
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                        - 
                                                            Operating Instruction (BA)
 Prosonic M FMU40/41/42/43/44Compact transmitters for non-contact level measurements of fluids, 
 pastes and coarse bulk materialsEN 02/04/201201/01/200930/04/200707/08/200601/07/2006Language: English Version: 02/04/2012 File size: 2.6 MB File name: BA00237FEN_1312.pdf 
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                                                            Short Instruction (KA)
 FMU4x - Exchange of housing T12Prosonic M FMU4x - Exchange of housing T12 EN 16/04/2021Language: English Version: 16/04/2021 File size: 266.7 KB File name: KA00570F00_A2.pdf 
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                                                            Short Instruction (KA)
 Weather protection cover Mounting InstructionWeather protection cover for devices with F12/T12/F23 housing. EN 27/06/200731/05/2007Language: English Version: 27/06/2007 File size: 235.5 KB File name: KA137Fa6_0607.pdf 
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