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Ultrasonic level measurement

Continuous level measurement in liquids and solids with ultrasonic level sensors

Ultrasonic level measurement
13 Products
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Prosonic FDU90 - Ultrasonic measurement
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Meet your basic measurement needs

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Handle your core processes easily

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Prosonic FDU90 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FDU90
Ultrasonic measurement
Time-of-Flight Prosonic FDU90

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 3m)

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Accuracy +/- 2mm + 0.17% of measured distance
Process temperature -40 °C ... 80 °C
(-40 °F ... 176 °F)
Process pressure / max. overpressure limit 0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
Max. measurement distance Liquids: 3 m (9.8 ft),
Solids: 1.2 m (3.9 ft)
Main wetted parts PVDF (IP68 / NEMA6P)
Prosonic FDU91 - Ultrasonic measurement
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Prosonic FDU91 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FDU91
Ultrasonic measurement
Time-of-Flight Prosonic FDU91

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 10m)

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Accuracy +/- 2 mm + 0.17% of measured distance
Process temperature -40 °C ... 80 °C
(-40 °F ... 176 °F)
Process pressure / max. overpressure limit 0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
Max. measurement distance Liquids: 10 m (33 ft),
Solids: 5 m (16 ft)
Main wetted parts PVDF (fully welded IP68 / NEMA6P)
Prosonic FDU90 - Ultrasonic measurement
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Prosonic FDU90 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FDU91F
Ultrasonic measurement
Time-of-Flight Prosonic FDU91F

Hygienic sensor for level and flow measurement for connection to FMU9x (measuring range up to 10m)

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Accuracy +/- 2mm + 0.17% of measured distance
Process temperature -40 °C ... 105 °C
(-40 °F ... 221 °F)
30 min: 135 °C / 275 °F)
Process pressure / max. overpressure limit 0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
Max. measurement distance Liquids: 10 m (33 ft),
Solids: 5 m (16 ft)
Main wetted parts 316L (fully welded IP68 / NEMA 6P)
Prosonic FDU92 - Ultrasonic measurement
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Prosonic FDU92 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FDU92
Ultrasonic measurement
Time-of-Flight Prosonic FDU92

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 20m)

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Accuracy +/- 2mm + 0.17% of measured distance
Process temperature -40 °C ... 95 °C
(-40 °F ... 203 °F)
Process pressure / max. overpressure limit 0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
Max. measurement distance Liquids: 20 m (65 ft),
Solids: 10 m (33 ft)
Main wetted parts PVDF (fully welded IP68 / NEMA 6P)
Prosonic FDU93 - Ultrasonic measurement
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Prosonic FDU93 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FDU93
Ultrasonic measurement
Time-of-Flight Prosonic FDU93

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 25m)

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Accuracy +/- 2mm + 0.17% of measured distance
Process temperature -40 °C ... 95 °C
(-40 °F ... 203 °F)
Process pressure / max. overpressure limit 0.7 bar ... 3 bar abs
(10 psi ... 43 psi)
Max. measurement distance Liquids: 25 m (85 ft),
Solids: 15 m (50 ft)
Main wetted parts UP (unsaturated polyester)
Prosonic FDU95 - Ultrasonic measurement
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Prosonic FDU95 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FDU95
Ultrasonic measurement
Time-of-Flight Prosonic FDU95

Ultrasonic sensor for level measurement for connection to FMU9x (measuring range up to 45m)

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Accuracy +/- 2 mm + 0.17% of measured distance
Process temperature -40 °C...80 °C
or 150 °C,
(-40 °F...176 °F
or 302 °F)
Process pressure / max. overpressure limit 0.7 bar...1.5 bar abs
(10 psi...22 psi)
Max. measurement distance 45 m (148 ft)
Main wetted parts UP (unsaturated polyester)
Prosonic FMU30 - Ultrasonic measurement
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Prosonic FMU30 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FMU30
Ultrasonic measurement
Time-of-Flight Prosonic FMU30

Cost effective all-round instrument for level applications in liquids and bulk solids

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Accuracy +/- 3 mm or +/- 0.2 % of set measuring range
Process temperature -20 °C ... 60 °C
(-4 °F ... 140 °F)
Process pressure / max. overpressure limit 0.7 bar ... 3 bar abs
(10 psi ... 44 psi)
Max. measurement distance Sensor 1-1/2": 2 m (6.6 ft)
Sensor 2": 3.5 m (11 ft)
Main wetted parts PP/EPDM
Prosonic FMU40 - Ultrasonic measurement
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Prosonic FMU40 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FMU40
Ultrasonic measurement
Time-of-Flight Prosonic FMU40

Cost effective device for sophisticated level measurement in liquids and bulk solids for up to 5m

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Accuracy +/- 2 mm or +/- 0.2 % of set measuring range 1)
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)
Max. measurement distance Liquids: 5 m (16 ft),
Solids: 2 m (6.6 ft)
Main wetted parts PVDF
Prosonic FMU41 - Ultrasonic measurement
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Prosonic FMU41 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FMU41
Ultrasonic measurement
Time-of-Flight Prosonic FMU41

Cost effective device for sophisticated level measurement in liquids and bulk solids for up to 8m

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Accuracy +/- 2 mm or +/- 0,2 % of set measuring range 1)
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)
Max. measurement distance Liquids: 8 m (26 ft),
Solids: 3.5 m (11 ft)
Main wetted parts PVDF
Prosonic FMU42 - Ultrasonic measurement
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Prosonic FMU42 - Ultrasonic measurement Ultrasonic measurement
Time-of-Flight Prosonic FMU42
Ultrasonic measurement
Time-of-Flight Prosonic FMU42

Cost effective device for sophisticated level measurement in liquids and bulk solids for up to 10m

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Accuracy +/- 4 mm or +/- 0,2 % of set measuring range
Process temperature -40 °C ... 80 °C
(-40 °F ... 176 °F)
Process pressure / max. overpressure limit 0.7 bar ... 2.5 bar abs
(10 psi ... 36 psi)
Max. measurement distance Liquids: 10 m (33 ft),
Solids: 5 m (16 ft)
Main wetted parts PVDF

Ultrasonic level measurement

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About ultrasonic level measurement

Ultrasonic level measurement with Prosonic sensors provides continuous, non-contact and maintenance-free level measurement of fluids, pastes, sludges and powdery to coarse bulk materials. The measurement is unaffected by dielectric constant, density or humidity and also unaffected by build-up due to the self-cleaning effect of the sensors. Check out the broad range of Prosonic devices for ultrasonic level measurement and click on the button below.

The ultrasonic method is a proved, as well as cost-effective solution for level measurement in liquids and bulk solids. Instruments are available as compact or separate versions. This measuring principle is characterized by easy planning and assembly, fast and safe commissioning, a long service life and reduced maintenance costs. Typical applications include abrasive and aggressive media, even in rough ambient conditions.

Ultrasonic measurement: Measuring Principle

Prosonic is based on the Time-of-Flight principle. A sensor emits ultrasonic pulses, the surface of the media reflects the signal and the sensor detects it again. The Time-of-Flight of the reflected ultrasonic signal is directly proportional to the distance traveled. With the known tank geometry the level can be calculated.

Benefits

  • Non-contact, maintenance-free measurement
  • Measurement unaffected by media properties, like dc value or density
  • Calibration without filling or discharging
  • Self-cleaning effect due to vibrating sensor diaphragm

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