SIEMENS 7ML5440-0HB00-0AA2 Level Transmitter

Product Description

SIEMENS 7ML5440-0HB00-0AA2 is a SITRANS LR560 Radar Level Transmitter designed for continuous, non-contact level measurement of solids and liquids. It uses 78 GHz FMCW radar technology to provide reliable level measurement in industrial process applications.

This model is equipped with a flush lens antenna, 4-inch (100 mm) flange connection, 4–20 mA output with HART communication, and a local display interface. It is commonly used for bulk solids measurement in silos, hoppers, and storage vessels.

Specifications

• Brand: SIEMENS
• Model: 7ML5440-0HB00-0AA2
• Product Type: Radar Level Transmitter
• Series: SITRANS LR560
• Measurement Principle: Non-contact FMCW radar
• Radar Frequency: 78 GHz
• Measurement Range: Up to 100 m (328 ft)
• Application: Solids and liquid level measurement
• Antenna Type: Flush lens antenna
• Process Connection:
  • Universal flat-faced flange
  • 4 inch / 100 mm
• Output Signal:
  • 4–20 mA
  • HART communication
• Power Supply: Nominal 24 VDC
• Display: Local display interface (LDI) included
• Enclosure: Stainless steel housing
• Pressure Rating: Max. 0.5 bar g
• Operating Temperature: Approx. -40…+100 °C

Functions

• Measures material level without physical contact
• Converts radar echo signals into level values
• Provides continuous tank and silo monitoring
• Sends measurement data to PLC/DCS systems
• Supports remote configuration through HART communication
• Provides local display and diagnostic information

Advantages & Features

• High-frequency 78 GHz radar technology
• Non-contact measurement reduces maintenance requirements
• Suitable for dusty environments and bulk materials
• Long measuring range up to 100 m
• Reliable operation in harsh industrial conditions
• Supports industrial automation communication
• Integrated aiming and flush lens antenna design

Applications

• Cement and mining industries
• Grain and bulk material silos
• Chemical storage tanks
• Power plant material handling systems
• Food and pharmaceutical processing
• Industrial process automation

Notes

• 7ML5440-0HB00-0AA2 is a radar level transmitter, not an ultrasonic transmitter
• Confirm flange size and antenna type before replacement
• Verify HART communication parameters before commissioning
• Ensure correct installation angle to avoid false echo signals
• Suitable for PLC/DCS systems using 4–20 mA input