Siemens 7ML5440-0CB00-1AA2 Radar Level Transmitter 7ML54400CB001AA2

• Extended Product  Type: Level Transmitter
• Product ID: 7ML5440-0CB00-1AA2
• ABB Type Designation: Level Transmitter

Description of Siemens 7ML5440-0CB00-1AA2 Radar Level Transmitter

The Siemens 7ML5440-0CB00-1AA2 Radar Level Transmitter is a high-performance, non-contact radar level measurement solution engineered for precise and reliable monitoring of liquids and slurries in industrial environments. Utilizing advanced radar technology, this transmitter ensures accurate level detection regardless of temperature, pressure, vapor, or dust conditions.

Designed as part of Siemens’ SITRANS radar portfolio, this device delivers continuous level measurement with exceptional stability and minimal maintenance requirements. Its non-contact design eliminates wear and contamination risks, making it ideal for harsh process conditions. The transmitter supports seamless integration into modern automation systems, ensuring real-time monitoring and control for optimized process efficiency.

With robust construction and intelligent signal processing, the 7ML5440-0CB00-1AA2 ensures consistent performance in challenging applications such as chemical storage, water treatment, and bulk material handling. Its reliability reduces downtime and enhances operational safety, making it a preferred choice for industrial level measurement.

Technical Specifications of Siemens 7ML5440-0CB00-1AA2 Radar Level Transmitter

Parameter	Specification
Model Number	7ML5440-0CB00-1AA2
Measurement Technology	Non-contact Radar
Measuring Range	Up to 20 m (65 ft) approximate, application dependent
Output Signal	4–20 mA, HART
Accuracy	±3 mm (typical)
Process Temperature Range	-40°C to +80°C (application dependent)
Process Pressure Range	Vacuum to moderate pressure
Frequency Range	High-frequency radar (GHz range)
Enclosure Rating	IP67 / NEMA 4X
Housing Material	Industrial-grade plastic / aluminum
Process Connection	Threaded or flange options
Electrical Connection	Cable entry (M20 / conduit)
Power Supply	12–30 V DC
Display	Optional local display
Mounting	Top-mounted installation
Communication Protocol	HART compatible
Hazardous Area Approval	Available (depending on configuration)

Key Features of Siemens 7ML5440-0CB00-1AA2 Radar Level Transmitter

• Non-contact radar measurement for maintenance-free operation
• High accuracy and reliability in harsh industrial conditions
• Insensitive to vapor, dust, and temperature fluctuations
• Advanced signal processing for stable readings
• HART communication for easy integration with PLC/DCS systems
• Rugged IP67/NEMA 4X enclosure for outdoor and industrial use
• Minimal calibration requirements for fast commissioning
• Versatile mounting options for different tank configurations
• Long service life with low total cost of ownership

Applications of Siemens 7ML5440-0CB00-1AA2 Radar Level Transmitter

The Siemens 7ML5440-0CB00-1AA2 radar level transmitter is widely used across multiple industries for continuous level monitoring:

• Water & Wastewater Treatment – tank level monitoring, lift stations
• Chemical Processing – corrosive liquid storage and reactors
• Oil & Gas – storage tanks and process vessels
• Food & Beverage – hygienic level measurement applications
• Power Generation – cooling water and chemical tanks
• Bulk Storage & Silos – liquid and slurry level measurement

Its adaptability makes it suitable for both simple storage tanks and complex process vessels requiring high measurement accuracy.

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Frequently Asked Questions (FAQ)

1. What type of measurement technology does this transmitter use?
It uses non-contact radar technology, which measures level by emitting microwave signals and analyzing the reflected signal.

2. Can it be used in harsh environments with vapor or dust?
Yes, radar technology is highly resistant to environmental factors such as vapor, dust, and temperature changes.

3. Is the transmitter suitable for corrosive liquids?
Yes, since it is non-contact, it does not come into direct contact with the medium, making it ideal for corrosive applications.

4. What output signal does the device provide?
It provides a standard 4–20 mA signal with HART communication for integration with control systems.

5. Does it require frequent maintenance?
No, the non-contact design significantly reduces maintenance requirements compared to contact-based sensors.

6. What industries commonly use this radar level transmitter?
Industries such as water treatment, oil & gas, chemical processing, and food & beverage widely use this device.