Endress+Hauser Prosonic FMU90-R11CA131AA3A

Ultrasonic Level Transmitter

Endress+Hauser Prosonic FMU90-R11CA131AA3A | Ultrasonic Level & Flow Transmitter

The Endress+Hauser FMU90-R11CA131AA3A 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 advanced pump control, limit detection, and flexible I/O options 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 

• Flexible I/O: 1x 4-20mA HART output, 3x SPDT relays, and 1 sensor input for FDU9x series probes 

• Integrated Pump Control: Supports alternating pump control, rake control, and limit detection 

• Easy Commissioning: 6-line plain text display with 15 languages, menu-guided operation, and envelope curve display for on-site diagnostics 

• Field Housing: IP66 / NEMA 4x enclosure for direct field installation; PC material 

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

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

• Heartbeat Technology: Available for advanced diagnostics and verification (depending on configuration) 

Order Code Interpretation: FMU90-R11CA131AA3A

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 and stormwater overflow basins 

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

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

• Environmental Monitoring: Water/wastewater treatment, stormwater management, and irrigation systems 

Endress+Hauser FMU90

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

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

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

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

• Flexible Configuration: Multiple I/O options and compatibility with FDU9x sensors for application adaptability 
  
  Endress+Hauser Prosonic FMU90-R11CA131AA3A ultrasonic transmitter. ±2mm accuracy, 90-253VAC, 3 relays, 4-20mA HART, IP66, for level/flow/pump control.

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