Product Overview
SIEMENS 7ML5431 Radar level gauge LR250 horn type
7ML5431
The Siemens SITRANS LR250 (7ML5431) is a high-performance 2-wire, 25 GHz pulse radar level transmitter designed for continuous non-contact level measurement of liquids and slurries in storage and process vessels up to 20 meters. Featuring advanced graphical user interfaces, automatic false-echo suppression, and exceptional 3mm accuracy, this horn-type radar gauge provides reliable process monitoring under demanding temperature and pressure conditions. As a professional global distributor, we supply authentic instruments with technical support and fast delivery worldwide.
The SITRANS LR250 horn antenna radar level transmitter delivers reliable level monitoring across demanding industrial environments. Operating at a high frequency of 25 GHz, this transmitter achieves a narrow beam angle that allows easy installation even through small nozzles while minimizing interference from internal tank obstructions like agitators or heating coils. Equipped with Process Intelligence signal processing software, the unit continuously evaluates echo profiles to filter out false signals and maintain steady tracking of the true material level.
Its compact horn antenna design combined with a short 50mm dead zone maximizes usable tank capacity. The intuitive graphical user interface and quick-start wizard simplify local setup without requiring specialized training, while remote configuration remains seamless via fieldbus protocols. This transmitter is ideal for process vessels, storage tanks, and buffer tanks in chemical processing, petrochemical plants, water and wastewater treatment facilities, food and beverage production, pharmaceutical manufacturing, and power generation operations where high accuracy, reliable performance, and SIL-2 functional safety compliance are essential.
FAQ
Q: Are the Siemens SITRANS LR250 level transmitters supplied by your company genuine?
A: Yes, as an international distributor of industrial instrumentation, we source directly through authorized channels to deliver 100% genuine and brand-new products with complete documentation.
Q: Can you help select the correct model code (e.g., 7ML5431) for our specific application?
A: Absolutely. Our experienced technical sales team can help review your process temperature, pressure, chemical compatibility, and connection requirements to match the precise ordering code.
Q: How do you handle international shipping and lead times?
A: We ship worldwide via major global express carriers (DHL, FedEx, UPS) as well as air and ocean freight. Standard stock items ship promptly upon order confirmation.
Technical Specifications
| Measurement Range | Up to 20 m (65.6 ft) |
|---|---|
| Operating Frequency | 25 GHz pulse radar |
| Measurement Accuracy | ±3 mm (compliant with IEC 60770-1) |
| Min. Dead Zone | 50 mm from horn end |
| Antenna Type | Horn antenna (small footprint for easy installation) |
| Safety Certification | IEC 61508 / IEC 61511 (SIL-2 rating) |
| Local Programming | Graphical user interface; optional intrinsically safe infrared handheld programmer |
| Remote Configuration | SIMATIC PDM, Emerson AMS, or FDT/DTM (e.g., PACTware/FieldCare) |
Product documents
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