SITRANS Probe LU240 - Ultrasonic Level Transmitter

For liquid inventory, small process vessels, and environmental level measurement. Optional Bluetooth with SITRANS mobile IQ.

SITRANS Probe LU240 is a compact ultrasonic level transmitter for liquids in small vessels and environmental applications, providing accurate measurement.

SITRANS LT500 is an advanced level, flow and pump controller working with radar and ultrasonic transmitters and any 2-wire 4–20 mA device with multiple options.

SITRANS mobile IQ is a free app for easy access to your field devices. Commission, parameterize and monitor instrumentation via Bluetooth.

SITRANS Probe LU240 delivers reliable, low-maintenance ultrasonic level measurement for demanding environments. Advanced echo processing, rugged IP68 construction, and flexible power and connectivity options enable accurate data, easy installation and lower lifetime costs — helping you maximize uptime and asset efficiency.

Leverage state-of-the-art Process Intelligence echo processing to separate true level signals from false echoes, delivering accurate, repeatable measurements with fast response — even in challenging applications.

Eliminate buildup with maintenance-free active face technology and rely on an IP68 fully potted, encapsulated PVDF sensor that withstands corrosion, chemicals, and extreme shock.

Support battery and solar installations with low start-up current and 10.5 V operation, while enabling easy commissioning through HART 7, push-button setup, remote configuration, and optional Bluetooth.

ETFE or PVDF transducers for chemical compatibility

6 and 12 m versions: 0.15% of range or 6 mm (0.25 inch) ±2 mm (0.08 inch) on ranges 4 m or less; 3 m version: ±10 mm (0.39 inch)

HART 7; EDD for SIMATIC PDM for remote configuration and diagnostics; FDT such as PACTware or Fieldcare via SITRANS DTM; optional Bluetooth wireless technology with SITRANS AW050 adapter

SITRANS Probe LU240 shows why ultrasonic level measurement isn’t limited by blanking distance. Smart installation uses top-of-tank buffer zones, safety point level backup, and proven engineering practices to prevent overflow. The result: reliable, accurate performance in real-world applications.

SITRANS Probe LU240 fits seamlessly into Siemens’ integration ecosystem. Commission and configure via Bluetooth with SITRANS mobile IQ, remotely using the SITRANS LT500 controller or through SIMATIC PDM. Easily turn level data into actionable insights — from local displays and control rooms to cloud monitoring and digitalization apps.

SITRANS Probe LU240 is designed to perform in real-world conditions. The self-cleaning ultrasonic face resists build-up, cobwebs, wind, temperature variation, and vibration. With encapsulated electronics and proven Siemens ultrasonic technology, SITRANS Probe LU240 delivers reliable, accurate level measurement — even in harsh and demanding environments.

SITRANS Probe LU240 delivers proven ultrasonic accuracy for open channel measurement applications. Built on decades of Siemens expertise, it provides reliable level data in environmental and water applications. Paired with Siemens controllers and communication options, it supports precise measurement, diagnostics, alarms, and seamless integration — helping ensure consistent, trustworthy flow monitoring.

Add Bluetooth wireless connectivity to SITRANS Probe LU240 with the SITRANS AW050 adapter. Using the SITRANS mobile IQ app on your handheld device, you can commission, monitor, and maintain your ultrasonic level transmitter quickly and safely, with intuitive diagnostics and real-time access, right at your fingertips.

SITRANS Probe LU240 meets Siemens EcoTech criteria through reduced material use, recyclable packaging and long service life. It supports repairability, software and firmware updates, optional Bluetooth upgrades and low-maintenance operation, helping reduce environmental impact while enabling dependable performance across its lifecycle. Read the Siemens EcoTech profile for SITRANS LU240 here.

When you unbox the SITRANS Probe LU240, you’ll find an easy-to-install ultrasonic level transmitter designed for quick setup. The packaging is compact, protective and clearly labeled, with helpful instructions included on the product itself. You’ll also find guidance for a short demo to get you up and running fast — making installation, configuration and first measurements straightforward from the start.

SITRANS IQ Guard adds advanced diagnostics, trend logging and alerts, helping users monitor tank levels, filling rates, and irregular behavior. This combination helps optimize material usage, prevent overfills or product loss, reduce downtime and support smarter, data-driven decisions across operations. Read more here.

A properly engineered level measurement system should also include a level switch for alarm or back-up. Typically for Hi level overfill prevention and/or low-level for dry-run protection, these safeguards help ensure safe operation and process reliability.

Supplementary components are designed to work alongside most types of instrumentation to enhance functionality, such as enabling remote displays and remote monitoring solutions. They help extend system visibility and accessibility.

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