Key Specifications
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Accuracy
±2 mm + 0.17% of measured distance
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Operating Temperature
-40 °C … 95 °C
(-40 °F … 203 °F) -
Operating Pressure / Max. Overpressure Limit
0.7 bar … 4 bar abs.
(10 psi … 58 psi) -
Maximum Measuring Range
Liquids: 20 m (65 ft),
Solids: 10 m (33 ft) -
Wetted Parts
PVDF (fully sealed housing IP68/NEMA 6P)
Application
The FDU92 ultrasonic sensor is designed for continuous non-contact level measurement of liquids, pastes, slurries, as well as powdered and granular bulk materials without requiring maintenance. It is also used for flow measurement in open channels and weirs. Measurements remain unaffected by dielectric constant, density, humidity, or deposits due to the sensor’s self-cleaning effect. Suitable for hazardous areas. Maximum measuring range: 20 m (65 ft) for liquids, 10 m (33 ft) for solids.
Sensor for continuous non-contact level measurement of liquids and bulk materials in silos, conveyors, stockpiles, and crushers. Also for flow measurement in open channels and weirs. Particularly effective in confined spaces.
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Process connection: Threaded
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Temperature range: -40 to +95°C (-40 to +203°F)
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Pressure range: +0.7 to +4 bar (+10 to +58 psi)
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Maximum measuring range: Liquids 20 m (65 ft), solids 10 m (33 ft)
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Blind zone: 0.4 m (1.3 ft)
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International explosion protection certifications
Advantages
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Built-in temperature sensor for time-of-flight compensation. Ensures accurate measurements even with temperature fluctuations
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Sealed PVDF sensor with high chemical resistance
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Suitable for harsh environments due to separate transmitter mounting (up to 300 m)
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Minimal buildup due to self-cleaning effect
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Integrated automatic sensor identification for FMU90/FMU95 transmitters simplifies commissioning
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Weatherproof and submersible (IP 68)
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Holds international Dust-Ex and Gas-Ex certifications
