Endress+Hauser FMU90-R11CA212AA1A Ultrasonic Transmitter FMU90R11CA212AA1A

• Extended Product Type: Level Transmitter

• Product ID: FMU90-R11CA212AA1A

• E+H Type Designation: Level Transmitter

Description of Endress+Hauser FMU90-R11CA212AA1A Ultrasonic Transmitter

The Endress+Hauser FMU90-R11CA212AA1A Ultrasonic Transmitter is a high-performance level measurement controller engineered for continuous, non-contact monitoring of liquids, solids, and flow in open channels. Designed for industrial automation environments, this transmitter delivers exceptional accuracy, reliability, and flexibility across a wide range of applications.

Built to integrate seamlessly with ultrasonic sensors, the FMU90 provides advanced signal processing capabilities that ensure stable readings even in challenging conditions such as turbulence, foam, dust, or varying temperatures. Its intuitive user interface and configurable outputs make it an ideal solution for both simple and complex measurement tasks.

The FMU90 series supports multiple measurement modes, including level, volume, and flow calculations, making it a versatile choice for industries seeking a single platform for various process monitoring needs. With robust construction and industry-standard communication options, it ensures long-term performance in water treatment, chemical processing, and bulk material handling applications.

Key Features of E+H FMU90-R11CA212AA1A Ultrasonic Transmitter

• Non-contact ultrasonic measurement for liquids and solids
• High measurement accuracy with advanced echo processing
• Multi-functional: level, volume, and flow measurement
• Dual-channel capability for monitoring multiple points
• User-friendly interface with clear display and configuration options
• Flexible output signals for integration with PLC/DCS systems
• Reliable performance in harsh industrial environments
• Low maintenance due to non-contact technology
• Compatible with a wide range of ultrasonic sensors

Technical Specifications of E+H FMU90-R11CA212AA1A Ultrasonic Transmitter 

Parameter	Specification
Product Model	FMU90-R11CA212AA1A
Measurement Principle	Ultrasonic (Non-contact)
Input Channels	Up to 2 sensor inputs
Measured Variables	Level, Volume, Flow
Output Signals	4–20 mA, Relay outputs
Communication	HART (optional depending on configuration)
Power Supply	90–253 VAC (typical for FMU90 series)
Display	Backlit LCD with menu-driven interface
Accuracy	High accuracy (dependent on sensor and application conditions)
Mounting Type	Panel or field mounting
Enclosure Rating	IP66 / NEMA 4X (typical)
Operating Temperature	-20°C to +60°C (electronics)
Sensor Compatibility	Compatible with Endress+Hauser ultrasonic sensors (e.g., Prosonic series)
Configuration	On-device keypad or remote configuration
Data Processing	Advanced echo curve analysis and filtering

Applications of E+H FMU90-R11CA212AA1A Ultrasonic Transmitter 

The FMU90 ultrasonic transmitter is widely used across industries that require reliable, non-contact measurement solutions:

Water & Wastewater Treatment

• Level monitoring in tanks, reservoirs, and lift stations
• Flow measurement in open channels and weirs
• Sludge level detection

Chemical & Process Industries

• Storage tank level monitoring for aggressive or hazardous liquids
• Inventory management for bulk chemicals
• Process control in mixing and batching systems

Food & Beverage Industry

• Hygienic level measurement in storage and processing tanks
• Monitoring of liquid ingredients

Mining & Bulk Solids

• Measurement of grain, cement, sand, and powders in silos
• Dust-resistant level detection

Energy & Utilities

• Cooling water level monitoring
• Open channel flow measurement in power plants

Benefits of E+H FMU90-R11CA212AA1A Ultrasonic Transmitter

The Endress+Hauser FMU90 ultrasonic level transmitter stands out as a top choice for industries seeking accurate, maintenance-free level measurement. Its non-contact ultrasonic technology eliminates wear and contamination risks, making it ideal for harsh and corrosive environments.

With multi-parameter measurement capabilities, this transmitter reduces the need for multiple instruments, lowering installation and operational costs. Its advanced signal processing ensures consistent performance even in difficult conditions, improving process efficiency and system uptime.

Frequently Asked Questions (FAQ)

1. What is the FMU90 used for?

The FMU90 is used for continuous level, volume, and flow measurement in liquids and solids using ultrasonic technology.

2. Does the FMU90 require contact with the medium?

No, it uses non-contact ultrasonic measurement, making it ideal for corrosive, dirty, or hazardous materials.

3. Can it measure flow in open channels?

Yes, the FMU90 supports open channel flow measurement using flumes and weirs.

4. How many sensors can be connected?

The transmitter supports up to two ultrasonic sensors, allowing multi-point monitoring.

5. Is it suitable for outdoor installation?

Yes, with an enclosure rating of IP66 / NEMA 4X, it is designed for harsh outdoor environments.

6. What industries commonly use this transmitter?

It is widely used in water treatment, chemical processing, food & beverage, mining, and energy sectors.

7. Does it support integration with control systems?

Yes, it offers 4–20 mA outputs and optional communication protocols, making it compatible with PLC and DCS systems.