Endress+Hauser Prosonic FMU90-R11CA111AA3A

Ultrasonic Level Transmitter

The Endress+Hauser FMU90-R11CA111AA3A is a versatile ultrasonic transmitter from the Prosonic S series, designed for continuous, non-contact level measurement of liquids, sludge, and bulk solids, as well as flow measurement in open channels and weirs . This field-mount version offers integrated pump control and limit detection for demanding water/wastewater and industrial applications .

Key Features and Product Highlights

• High Accuracy: ±2 mm + 0.17% of measured distance ensures precise level/flow control 

• 1 Sensor Input: Single-channel version for FDU9x series ultrasonic sensors 

• Relay Output: 1 SPDT relay for alarm or pump control functions 

• 4-20mA HART Output: Single analog output for seamless system integration 

• Field Housing: IP66 / NEMA 4x polycarbonate enclosure for direct field installation 

• Wide Power Range: 90-253 VAC supply for global compatibility 

• Easy Commissioning: 6-line plain text display, 15 languages, envelope curve display for diagnostics 

• Sensor Auto-Recognition: Automatic detection of FDU9x series sensors 
  
  

Order Code Interpretation: FMU90-R11CA111AA3A

Technical Specifications

Applications

• Level Measurement: Continuous, non-contact level of liquids, sludge, powders, and bulk solids in tanks, silos, and basins 

• Flow Measurement: Open channel and weir flow monitoring in wastewater treatment plants 

• Pump Control: Pump control, rake control, and dry-run protection 

• Limit Detection: High/low level alarms with relay outputs 

• Environmental Monitoring: Water/wastewater treatment, stormwater management 

Endress+Hauser FMU90-R11CA111AA3A

• All-in-One Solution: Combines level, flow, and pump control in a single device, reducing hardware costs 

• Simple Commissioning: Intuitive menu guidance with on-site envelope curve display speeds up installation 

• Proven Reliability: Over 30 years of ultrasonic measurement expertise from Endress+Hauser 

• Sensor Compatibility: Works with FDU9x series sensors; automatic sensor recognition 

• Global Support: Backed by Endress+Hauser's worldwide service network

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