SITRANS LR250 Radar Level Transmitter
Part number 7ML5431-0BF30-0AA0
Two-wire 25 GHz pulse radar for liquid level up to 20 m, 4–20 mA HART, graphical quick-start, hygienic and PTFE-encapsulated antenna options.
- CE
- ATEX
- IECEx
- RoHS
- EAC
Overview
The SITRANS LR250 is a 25 GHz loop-powered pulse radar for liquids in storage and process vessels up to 20 m. Its graphical local interface walks through commissioning in minutes, and Process Intelligence echo processing filters false echoes from internals. Antenna options include stainless horn, flanged PTFE-encapsulated for corrosive liquids and hygienic 3-A/EHEDG versions. The code 7ML5431-0BF30-0AA0 is a typical HART configuration; antenna and process connection are specified in the full code.
Key features
- 25 GHz pulse radar, measuring range 0.3…20 m
- Two-wire loop-powered, 4–20 mA HART (PROFIBUS PA, FF options)
- Process Intelligence echo processing
- Graphical local display with quick-start wizard
- Horn, flanged PTFE-encapsulated and hygienic antenna variants
Typical applications
- Chemical storage tanks
- CIP and hygienic liquid vessels
- Water and wastewater basins
- Corrosive liquid tanks
Technical specifications — 7ML5431-0BF30-0AA0
| Process | |
|---|---|
| Measuring principle | Pulse radar, 25 GHz |
| Range | 0.3…20 m |
| Process temperature | -40…+170 °C (antenna-dependent) |
| Process pressure | up to 40 bar (antenna-dependent) |
| Accuracy | |
| Accuracy | ±3 mm (standard), ±1 mm (high-accuracy option) |
| Output | |
| Output | 4…20 mA / HART |
| Environment | |
| Enclosure rating | IP67/68 |
| Ambient temperature | -40…+80 °C |
Specifications are summarised from the manufacturer's documentation for selection purposes. Always confirm against the current datasheet before design-in; we send the datasheet and the exact ordering code with every quotation.
Related part numbers and alternatives
| Part number | Relationship | |
|---|---|---|
7ML5427 | SITRANS LR260 — 25 GHz radar for bulk solids | Quote |
7ML5440 | SITRANS LR560 — 78 GHz radar for solids up to 100 m | Quote |
FMR60B | Endress+Hauser Micropilot FMR60B — 80 GHz alternative | Quote |
Not sure which variant you need? Send us the nameplate photo or the old part number and we will identify the current equivalent.
Supply, documentation and lead time
What you receive
- Genuine Siemens product in original packaging
- Commercial invoice and packing list; Certificate of Conformance on request
- Datasheet, declaration of conformity and country of origin as issued by the manufacturer
- Manufacturer warranty, period stated on the quotation
How we quote
- Reply within one business day with price, lead time and stock position
- Alternatives proposed when they improve price or delivery
- Incoterms of your choice: EXW Hai Phong, FOB/FCA, CIF/DAP to your site
- Consolidated shipments for multi-line orders; export documentation for buyers outside Vietnam
Indicative HS code 9026.10 — final classification is confirmed on the commercial invoice.
Frequently asked questions
Is the 7ML5431-0BF30-0AA0 available from stock, and what is the lead time?
Availability of the SITRANS LR250 Radar Level Transmitter changes with manufacturer production and distributor stock, so we confirm it per request rather than publishing a number that may be out of date. Send the part number and quantity through the quote form and you will receive stock position and lead time within one business day.
Is the 7ML5431-0BF30-0AA0 genuine, and what documentation comes with it?
We supply only genuine Siemens products sourced from the manufacturer or authorized distribution channels. Each delivery includes the commercial invoice and packing list; a Certificate of Conformance, declaration of conformity and country-of-origin statement are provided on request, and the manufacturer's warranty applies.
Can you ship the 7ML5431-0BF30-0AA0 outside Vietnam?
Yes. We quote EXW Hai Phong, FCA/FOB, CIF or DAP and prepare the export documentation. Buyers in Japan, ASEAN, Europe and North America regularly consolidate multi-brand orders with us into one shipment.
What if the 7ML5431-0BF30-0AA0 is the wrong variant for my application?
Tell us the application in the notes field. Our engineers check the ordering code against your supply voltage, I/O, communication and environmental requirements and propose the correct variant or a successor part before quoting — at no charge.