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01TemperaturmessungSensoren und Messumformer für Prozesstemperaturen. 02FüllstandmessungRadar-, Ultraschall- und hydrostatische Instrumente. 03DruckmessungInstrumente für Relativ-, Absolut- und Differenzdruck. 04DurchflussmessungTechnologien für Flüssigkeiten, Gase und Dampf. 05DCS-ErsatzteileSteuerungs-, E/A-, Stromversorgungs- und Kommunikationsmodule. 06WasserqualitätsanalyseSensoren und Geräte für die Wasseranalyse. MODELChongqing Chuanyi MS22PSB2D10B0060DMZ Magnetostrictive Level GaugeEngineered for ultimate reliability and high-accuracy fluid monitoring, the MS Series Magnetostrictive Liquid Level Transmitter delivers continuous, real-time measurements for total liquid level and interface positions in demanding industrial environments. Utilizing advanced magnetostrictive sensing technology, this versatile transmitter provides precise, non-contact signal processing with a measurement accuracy up to ±1mm, making it an ideal solution for critical process controls across chemical processing, oil and gas, power generation, and water treatment applications where long-term stability and explosion-proof durability are paramount. MODELE+H FMU30 Non-Contact Ultrasonic Level TransmitterThe Prosonic FMU30 Non-Contact Ultrasonic Level Transmitter provides highly accurate, maintenance-free continuous level and open-channel flow measurement for liquids, pastes, and coarse bulk solids across municipal and industrial applications. Featuring an integrated temperature sensor for automatic sound velocity compensation, a user-friendly 4-line plain text display with 32-point linearization, and a rugged IP68-rated weatherproof enclosure, this compact 2-wire transmitter delivers dependable real-time tank monitoring, pump control, and overflow protection in sewage treatment plants, process water storage, and chemical buffer tanks. MODELE+H Deltabar PMD55B High Precision Smart Differential Pressure TransmitterThe PMD55B High Precision Smart Differential Pressure Transmitter delivers exceptionally accurate differential pressure, flow, and hydrostatic level measurements for industrial liquids, gases, and steam. Featuring a robust metallic diaphragm, ultra-low long-term drift, optional wireless Bluetooth operation, and SIL2/3 functional safety certifications, this versatile instrument provides stable, error-free process monitoring across harsh chemical, oil, and water treatment environments. MODELE+H Waterpilot FMX11 Submersible Hydrostatic Level TransmitterThe Waterpilot FMX11 is a high-precision, heavy-duty submersible hydrostatic level transmitter engineered for continuous liquid level and depth monitoring in fresh water, groundwater wells, drinking water reservoirs, and surface water bodies. Featuring an ultra-compact 22mm stainless steel 316L housing, an integrated atmospheric pressure compensation tube with a protective Teflon filter, and international drinking water certifications, this compact dip cell sensor delivers exceptional long-term stability and precise 4–20 mA signal output even in narrow 1-inch pipes and demanding environmental conditions. MODELChongqing Chuanyi WZGPK-73DH-GB/1P2-AJ150G-M20XC6-AXX-I5/2AM20 Explosion-proof RTDThe WZGPK is a heavy-duty explosion-proof armored Pt100 RTD temperature sensor engineered for accurate thermal monitoring in hazardous industrial environments. Equipped with a high-precision Class A platinum sensing element, a 3-wire connection, a 6mm diameter sheath made of durable 321 stainless steel, and a 150mm insertion length, this flameproof sensor delivers exceptionally fast thermal response, vibration resistance, and long-term stability across a wide temperature range from -200°C to 600°C. Designed with an M20x1.5 process thread and an explosion-proof junction box, it provides reliable flameproof protection and continuous signal accuracy for chemical plants, oil refineries, and automated process control systems. MODELYokogawa ADV151-P50/D5A00 Digital Input Module ExstockEngineered for reliable industrial automation, the Yokogawa ADV151-P50/D5A00 Digital Input Module provides high-density 32-channel, 24 V DC isolated signal processing alongside dedicated connection adapters, ensuring optimal signal integrity, robust noise immunity, and seamless integration into distributed control systems (DCS). MODELYokogawa AAI143-H50 Analog Input Module ExstockThe Yokogawa AAI143-H50 is a high-performance 16-channel isolated analog input module designed for process automation systems, capable of handling 4 to 20 mA standard signal inputs with exceptional stability and accuracy. Supplied with its matching terminal block adapter, this module offers seamless integration, superior noise immunity, and reliable data acquisition for demanding industrial environments. MODELYokogawa S2CP471-01 Controller Module Spare Part ExstockThe Yokogawa S2CP471-01 Controller Module Spare Part provides reliable, real-time control performance and high-speed VNET/IP communication connectivity to optimize your industrial DCS automation system with seamless integration and reduced operational downtime. MODELChongqing Chuanyi PDS843MH-1CS11-D1DA Differential Pressure TransmitterThe PDS843 Smart Differential Pressure Transmitter is a high-performance industrial instrument engineered with advanced monocrystalline silicon composite sensor technology, delivering an exceptional accuracy of up to ±0.025% FS and long-term stability of ≤±0.1% FS over 10 years. Designed for rigorous process automation, it seamlessly measures differential pressure, flow, and liquid level across harsh environments in chemical processing, oil and gas, power generation, and water treatment plants. Supporting HART 7.0, PROFIBUS-PA, and FOUNDATION Fieldbus protocols along with global explosion-proof certifications (ATEX, IECEx, NEPSI, EAC, SIL2/3), the PDS843 provides reliable realtime diagnostics, local three-button LCD configuration, and robust surge protection to optimize your industrial control systems. MODELE+H Prosonic Flow W 400 Non-Invasive Clamp-On Ultrasonic Flow MeterThe Prosonic Flow W 400 is an advanced, non-invasive clamp-on ultrasonic flow meter engineered for precise, maintenance-free measurement of both conductive and non-conductive liquids. Designed with innovative FlowDC (Flow Disturbance Compensation) technology, the W 400 maintains high-precision performance even with restricted straight inlet runs as short as 2 x DN.Flexible measurement across nominal pipe diameters from DN15 to DN4000 (1/2" to 160"). MODELE+H Memosens CPS11E Industrial Digital pH Sensor & TransmitterOur Digital Glass pH Sensor is an industrial-grade, heavy-duty solution engineered for reliable pH measurement in challenging process conditions and environmental monitoring. Utilizing advanced Memosens digital non-contact signal technology, it completely eliminates signal interference caused by moisture, corrosion, and cable length issues.Equipped with a dirt-repellent PTFE ring diaphragm and integrated NTC 30K temperature sensor, this sensor delivers long-term stability, minimal maintenance, and plug-and-play pre-calibrated convenience for global system integrators and industrial plants. MODELE+H Prosonic FMU42 Non-Contact Ultrasonic Level TransmitterThe Prosonic FMU42 is a high-precision, non-contact ultrasonic level transmitter designed for continuous level measurement of liquids, pastes, and coarse solids, as well as accurate flow rate measurement in open channels and weir systems across demanding industrial environments. SOLUTIONIntelligente Überwachung des WassernetzesKombinieren Sie verifizierte Durchfluss- und Druckdaten zur Verteilungsüberwachung und Betriebsüberprüfung. SOLUTIONWasserstoffdruckmessungÜberprüfen Sie Materialien, Druckbereich und Sicherheitsanforderungen für die Wasserstoffprozessmessung. SOLUTIONAuswahl der ProzessmessungBeginnen Sie mit dem Medium, dem Betriebsfenster, der Installation und dem erforderlichen Signal, bevor Sie ein Instrument auswählen.

Produkt

SIEMENS 7ML5431 Radar level gauge LR250

7ML5431

The Siemens SITRANS LR250 PP Lens Antenna Radar Level Transmitter (Model 7ML5431) is a high-precision, 2-wire 25 GHz pulsed radar level measurement device specifically engineered for monitoring liquid levels in highly corrosive chemical environments and storage tanks. Featuring a robust polypropylene planar lens antenna, this instrument delivers reliable, non-contact continuous level measurement with outstanding chemical resistance and immunity to harsh process vapor. As a trusted industrial instrumentation supplier, we supply 100% genuine Siemens instruments with comprehensive technical support, competitive pricing, and fast global shipping for your process automation needs.

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SIEMENS 7ML5431 Radar level gauge LR250

The SITRANS LR250 with a PP lens antenna stands as an industry-standard solution for continuous liquid level measurement where aggressive chemical vapors and corrosive liquids render traditional metallic antennas unsuitable. Operating at a high frequency of 25 GHz, this radar transmitter emits narrow microwave pulses focused through a polypropylene lens, achieving superior beam targeting even in narrow vessels with internal obstructions. The graphical local user interface simplifies setup through intuitive quick-start wizards, while advanced echo processing software ensures precise signal tracking and dependable automatic false echo suppression. Integrated diagnostic capabilities allow real-time echo profile visualization to streamline system troubleshooting.
Designed to operate seamlessly across modern industrial control systems, the device supports HART, PROFIBUS PA, and FOUNDATION Fieldbus communication protocols for flexible integration into distributed control systems (DCS) and PLC networks. Convenient local adjustment is enabled through an infrared intrinsically safe handheld programmer, alongside remote parameterization capabilities using SIMATIC PDM, Emerson AMS, or FDT software such as PACTware via SITRANS DTM. This level transmitter is widely deployed across demanding liquid storage and process applications, including chemical processing facilities handling acids and alkalis, industrial wastewater treatment systems, bulk liquid storage farms, slurry holding tanks, and municipal water management infrastructure where reliable non-contact level sensing and strong corrosion resistance are required.

FAQ
Q1: Is this product authentic Siemens equipment?
Yes, as a professional international distributor of process automation and instrumentation, we supply 100% original and authentic Siemens SITRANS LR250 transmitters directly sourced through authorized channels, complete with full documentation and factory warranties.

Q2: What media is the PP lens antenna version best suited for?
The polypropylene (PP) lens antenna design is specifically built for aggressive chemical liquids, acids, alkalis, and slurries that would typically corrode standard stainless steel or metal horn antennas.

Q3: How do I configure and program the SITRANS LR250 on-site?
Local configuration can be performed safely using the Siemens infrared intrinsically safe handheld programmer. For remote commissioning, you can use SIMATIC PDM, Emerson AMS, or any FDT/DTM framework software like PACTware.

Q4: Can this radar level gauge communicate with our existing PLC or DCS?
Yes, the 7ML5431 series supports standard industrial protocols including 4-20mA HART, PROFIBUS PA, and FOUNDATION Fieldbus for seamless integration into your existing automation network.

Technische Daten

Geprüfte Produktspezifikationen
Measurement Principle2-wire, 25 GHz pulsed radar level measurement
Antenna TypePolypropylene (PP) planar lens antenna
Measurement AccuracyHigh precision up to ±3 mm (compliant with IEC 60700-1 standard)
Target ApplicationCorrosive liquids, aggressive process chemicals, and slurries
Communication ProtocolsHART, PROFIBUS PA, or FOUNDATION Fieldbus
Local Operation & ConfigurationGraphical user navigation interface; Infrared intrinsically safe handheld programmer
Remote Configuration SoftwareSIMATIC PDM, Emerson AMS, FDT/DTM (e.g., PACTware, FieldCare)
Signal DiagnosticsAdvanced echo processing software with echo curve display and automatic false echo suppression

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