Overview
The Siemens 7ML54400GA000AA1 SITRANS LR560 radar level transmitter is a non-contacting, 2-wire solution for continuous solids level measurement in silos and industrial storage vessels. Built on 78 GHz FMCW radar technology, the LR560 offers a measurement range up to 100 m (328 ft) with minimal maintenance and robust performance across challenging process conditions.
Key Features
- 2-wire 4–20 mA output for direct loop-powered operation
- 78 GHz FMCW radar for non-contacting, echo-based level detection
- 4-degree narrow radar beam for flexible installation locations
- Operating temperature capability to +200 °C (+392 °F)
- Reliable performance in extreme dust, moisture, and vapors
- Plug-and-play functionality with integrated signal processing
Technical Specifications
- Measurement Range: 0–100 m (0–328 ft)
- Frequency: 78 GHz FMCW
- Output: 2-wire 4–20 mA (loop-powered)
- Connection: 1P (single process connection)
- Beam Width: 4 degrees nominal
- Operating Temperature: –20 to +200 °C (–4 to +392 °F)
- Accuracy: ±10 mm (typical) over range
- Response Time: <1 second
- Housing Material: Plastic or metallic options available
- Approvals: ATEX, FM, CSA, and IECEx certifications available
Typical Applications
- Grain and flour storage silos
- Coal and mineral storage vessels
- Chemical and powder handling systems
- Recycling and waste processing facilities
- Heavy industry and mining operations
- Food, beverage, and pharmaceutical production
Compatibility & Replacements
The Siemens 7ML54400GA000AA1 is part of the SITRANS LR560 series and serves as a direct replacement for earlier-generation solids level transmitters requiring 78 GHz operation. For liquids and slurries, consider the LR500 series (80 GHz). For interface measurement or guided-wave applications, the SITRANS LG series offers alternative solutions. Consult a Siemens process instrumentation specialist to confirm compatibility with legacy process control systems.
