Ultrasonic measurement Time-of-Flight Prosonic FMU42

Field of Application :

The Prosonic FMU42 is an ultrasonic sensor designed for continuous, non-contact level measurement in:

• Fluids, pastes, and coarse bulk materials
• Flow measurement in open channels and at weirs

It is suitable for two-wire or four-wire installations and is commonly used in:

• Storage tanks
• Agitators
• Stockpiles
• Conveyor belts

The on-site envelope curve display enables real-time system diagnosis, while the linearization function (up to 32 points) allows conversion of measured values into length, volume, or flow rate.

Key Specifications :

• Process connection: Flange
• Temperature range: -40 to +80°C (-40 to +176°F)
• Pressure range: +0.7 to +2.5 bar (+10 to +36 psi)
• Maximum measuring distance:
  • Liquids: 10m (33ft)
  • Solids: 5m (16ft)
• Blocking distance: 0.4m (1.3ft) for both liquids and solids
• International explosion protection certificates

Key Features & Benefits :

Reliable Performance & Accuracy

• Non-contact measurement minimizes maintenance
• Hermetically sealed and potted sensor for durability
• Chemically resistant PVDF sensor for harsh environments

User-Friendly Interface

• Quick commissioning with menu-guided on-site operation
• Four-line plain text display with 7 selectable languages

Advanced Diagnostics & Monitoring

• Envelope curves displayed on-site for real-time diagnostics
• Calibration without filling or discharging simplifies setup
• Integrated temperature sensor for automatic sound velocity correction