Endress+Hauser FMU41-ARB2A2

Ultrasonic level meter

FMU41-ARB2A2 is a non-contact ultrasonic level sensor (ultrasonic transducer) from Endress+Hauser's Prosonic FMU41 series.

It is designed to measure the level of liquids and bulk solids without physical contact, reducing wear and maintenance. The device supports both 2-wire and 4-wire connection methods, with a 4-20 mA output and HART protocol. 

It also features:

• compact housing, 
• integrated display
• linear correction (up to 32 points)

It is used for level measurement in tanks, cisterns, open channels, and for flow measurement in flumes or weirs.

fmu41 arb2a2 Datasheet:

• Measuring principle: Time-of-Flight
• Measuring range: 8 m for liquids; 3.5 m for bulk solids
• Power supply/output: 2-wire or 4-wire mode; 4-20 mA output + HART
• Media temperature: –40 °C to +80 °C
• Gage pressure: 0.7 to 3 bar absolute
• Wetted materials: PVDF
• Housing: Aluminum (coated),
• Protection class: IP68 / NEMA 6P
• Connection: Threaded connection R (ISO228 G2)
• Display: 4-line display, envelope curves for on-site diagnostics
• Accuracy: ±2 mm or ±0.2% of the set range