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Prosonic - Model FMU41 -Ultrasonic Measurements Time-of-Flight
Cost effective device for sophisticated level measurement in liquids and bulk solids for up to 8m. The Prosonic FMU41 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.
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Reliable non-contact measurement
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Quick and simple commissioning via menu-guided on-site operation with four-line plain text display, 7 languages selectable
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Envelope curves on the on-site display for simple diagnosis
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Hermetically sealed and potted sensor
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Chemically resistant sensor out of PVDF
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Calibration without filling or discharging
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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.
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Process connection: Thread
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Temperature: -40 to +80°C (-40 to +176°F)
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Pressure: +0.7 to +3bar (+10 to +44psi)
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Maximum measuring distance: Liquids 8m (26ft), Solids 3.5m (11ft)
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Blocking distance: Liquids and Solids 0.35m (1.15ft)
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International explosion protection certificates
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Measuring principle
Ultrasonic
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Characteristic / Application
Compact ultrasonic transmitter
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Supply / Communication
2/4-wire (HART), PROFIBUS PA, FOUNDATION Fieldbus
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Accuracy
+/- 2 mm or +/- 0,2 % of set measuring range
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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
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Process connection
G / NPT 2"
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Blocking distance
0.35 m (1.15 ft)
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Application
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Max. measurement distance
8 m (26 ft)
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Communication
4 ... 20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus -
Certificates / Approvals
ATEX, FM, CSA, TIIS, INMETRO, NEPSI
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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
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Measuring principle
Ultrasonic
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Characteristic / Application
Compact ultrasonic transmitter
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Supply / Communication
2/4-wire (HART), PROFIBUS PA, FOUNDATION Fieldbus
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Accuracy
+/- 2 mm or +/- 0,2 % of set measuring range 1)
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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
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Process connection
G / NPT 2"
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Blocking distance
0.35 m (1.15 ft)
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Max. measurement distance
3.5 m (11 ft)
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Communication
4 ... 20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus -
Certificates / Approvals
ATEX, FM, CSA, TIIS, INMETRO, NEPSI
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Application limits
Take notice of range diagram
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Measuring principle
Ultrasonic
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Product headline
Compact ultrasonic measuring instrument
Cost effective solution for open channels -
Max. measurement error
Low accuracy
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Measuring range
Measuring distance 0,4...8m [1.3...26ft]
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Max. process pressure
atm.
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Medium temperature range
-40°C...80°C
(-40°F...176°F) -
Degree of protection
IP68
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Outputs
4...20mA(Hart),PA,FF
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Inputs
2-wire 16-36V DC
4-wire 16-36V DC
90-253V AC 50/60Hz -
Digital communication
PROFIBUS PA, FOUNDATION Fieldbus
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Hazardous area approvals
ATEX, FM, CSA