Endress+Hauser Prosonic FMU30: Compact Ultrasonic Level Measurement up to 8 Meters

FMU30 applications range from sewage-treatment and process-water tanks to loading, storage and buffer tanks. Warning and alarm messages appear on the four-line plain-text display, and the envelope curve can be viewed directly on site for fast, accurate diagnostics.

Why Choose the Prosonic FMU30?

How Ultrasonic Measurement Works

The sensor sends ultrasonic pulses toward the material surface and receives the returning echoes. The transmitter uses the measured time of flight to determine distance and calculate level. An integrated temperature sensor automatically compensates for temperature-related changes in the speed of sound.

Prosonic FMU30 Key Specifications

Specifications, output variants and approvals depend on the selected order code. Confirm the current manufacturer documentation and complete application conditions before ordering.

Typical Applications

• Sewage-treatment and wastewater tanks
• Process-water and utility tanks
• Loading, storage and buffer tanks
• Small silos and bulk-solids storage
• Open-channel and weir flow measurement

Which FMU30 Sensor Size Should You Select?

Installation and Selection Notes

Provide a clear acoustic path between the sensor and product surface. Keep filling streams, ladders, heating coils and structural members outside the ultrasonic beam. The maximum level must remain outside the selected sensor's 0.25 m or 0.35 m blocking distance. Heavy foam, strong turbulence, dense vapor and severe temperature gradients can weaken the echo and should be reviewed during selection.

Information Needed for Correct Selection

1. Medium name and whether it is liquid, paste or bulk solid
2. Tank or silo height and required measuring range
3. Process temperature and absolute pressure
4. Foam, vapor, dust, agitation and filling conditions
5. Nozzle size, mounting position and internal obstacles
6. Hazardous-area approval, power supply and signal requirements

Technical reference: Endress+Hauser Prosonic FMU30 official product information. Product specifications and availability may change; confirm the complete order code before purchasing.