Siemens LUT420 — Level Controllers

Description The Siemens LUT420 is an ultrasonic level controller designed for continuous measurement of liquids, slurries, and solids in industrial environments. As part of the SITRANS LUT400 series, the Siemens LUT420 delivers reliable level and volume monitoring along with basic pump control and data logging. It is engineered for long-range measurement and stable operation in demanding applications such as tanks, wells, and open channel flow systems. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Process Control Part Number LUT420 Subcategory Level Controllers Measurement Range 0.3 to 60 m (1 to 196 ft) depending on transducer Accuracy ±1 mm standard operation (within specified range) Outputs 4–20 mA (isolated), relay outputs Relay Outputs 3 SPDT relays, configurable Communication HART 7.0, USB Power Supply (AC) 100–230 V AC ±15%, 50/60 Hz Power Supply (DC) 10–32 V DC Operating Temperature -20 to +50 °C (-4 to +122 °F) Enclosure Rating IP65 / NEMA 4X (with display lid) Display 60 x 40 mm LCD with backlight Memory 512 kB Flash EPROM, 1.5 MB data logging Weight Approx. 1.3 kg (2.87 lb) Information About LUT420 The LUT420 is a compact ultrasonic level controller from Siemens’ SITRANS LUT400 series, built for single-point measurement applications. It features a durable enclosure with flexible mounting options and supports a wide range of ultrasonic transducers for different measurement conditions. Designed for use in water treatment, storage tanks, and bulk material handling, it integrates pump control, alarm functions, and data logging capabilities. The device incorporates advanced digital signal processing and HART communication for reliable performance and seamless system integration. Key Features: Ultrasonic Measurement Technology: Provides accurate non-contact level, volume, and flow measurement for liquids and solids Integrated Pump Control: Supports basic pump control functions with configurable relay outputs HART Communication: Enables remote configuration, diagnostics, and integration with control systems Multi-Relay Outputs: Includes three relays for alarm handling, pump control, and process automation User-Friendly HMI: Features a menu-driven interface with four-button navigation and multi-language support Data Logging Capability: Built-in memory allows tracking of process trends and operational data Digital Signal Processing: Patented receiver technology ensures stable readings in electrically noisy environments Flexible Installation: Compact 1/2 DIN enclosure with wall, pipe, DIN rail, or panel mounting options The LUT420 delivers the reliability and precision required for industrial level measurement and basic process control applications.