Ultrasonic Level Sensor Prosonic FDU93

Application

The FDU93 ultrasonic sensor provides continuous, non-contact, and maintenance-free level measurement for liquids, pastes, sludges, and materials ranging from fine powders to coarse bulk solids. It is also suitable for flow measurement in open channels and weirs. The measurement remains unaffected by factors such as dielectric constant, density, or humidity, and the sensor’s self-cleaning effect prevents build-up. Additionally, it is designed for use in explosion-hazardous areas. The maximum measurement range extends up to 25 meters (85 feet) for liquids and 15 meters (50 feet) for solids.

This sensor is ideal for continuous, non-contact level measurement in fluids and bulk materials in various environments like silos, conveyors, stockpiles, and crushers. It also supports flow measurement in open channels and at weirs, particularly in situations where structural height is limited.

• Process connection: Thread
• Operating temperature: -40 to +95°C (-40 to +203°F)
• Pressure range: +0.7 to +3 bar (+10 to +43 psi)
• Maximum measuring range: Liquids 25 m (85 ft), solids 15 m (50 ft)
• Blocking distance: 0.6 m (2 ft)
• Explosion protection: Certified for use in hazardous areas globally

Benefits

• Integrated temperature sensor for Time-of-Flight correction ensures accurate measurements even in changing temperature conditions.
• Ideal for harsh environments due to the ability to install the sensor separately from the transmitter (up to 300 meters away).
• Reduced build-up formation thanks to the sensor’s self-cleaning feature.
• Simple commissioning with automatic sensor detection for FMU90/FMU95 transmitters.
• Weatherproof and flood-resistant with an IP68 rating.
• Non-contact measurement design minimizes maintenance needs.
• Certified for Dust-Ex and Gas-Ex protection, ensuring safety in hazardous areas.

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