Hygienic Ultrasonic Level Sensor Prosonic FDU91F

Application

The Prosonic FDU91F ultrasonic sensor is designed for continuous, non-contact, and maintenance-free level measurement of liquids, pastes, sludges, and bulk materials ranging from fine powders to coarse substances. It is also ideal for flow measurement in open channels and weirs. The sensor's performance is unaffected by factors such as dielectric constant, density, or humidity, and its self-cleaning effect minimizes buildup. The fully welded 316L sensor is available with hygienic process connections. The maximum measuring range is 10m (33ft) for liquids and 5m (16ft) for solids.

The sensor provides reliable level measurement of fluids and bulk materials in various applications, including silos, conveyor belts, stockpiles, and crushers. Additionally, it supports flow measurement in open channels and weirs, even in environments with low structural heights.

Specifications:

• Process Connections: Thread, Tri-Clamp
• Operating Temperature: -40 to +105°C (-40 to +221°F)
• Pressure Range: 0.7 to 4 bar (10 to 58 psi)
• Maximum Measuring Range: Liquids 10m (33ft), Solids 5m (16ft)
• Blocking Distance: 0.3m (1ft)
• Certifications: International explosion protection, hygienic certificates

Benefits

• Integrated temperature sensor for Time-of-Flight correction ensures accurate measurements even with temperature fluctuations.
• Hermetically sealed sensors (316L, 1.4404, 1.4435) offer superior chemical resistance.
• Separate installation from the transmitter (up to 300m) makes the sensor suitable for harsh environments.
• Reduced buildup due to the sensor’s self-cleaning design.
• Automatic sensor recognition with transmitters FMU90/FMU95 simplifies commissioning.
• Designed to be weather-resistant and flood-proof (IP68).
• Available with hygienic process connections for applications in sanitary environments.

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