Open-channel flow measurement

The ultrasonic way to monitor open channels

Measuring liquid flow in channels is a unique challenge requiring specialized technology – and Siemens delivers. SITRANS L non-contacting ultrasonic level products provide continuous monitoring of wet wells, flumes, and weirs with reliable level-to-flow calculations. Our highly accurate devices for open-channel flow range from the SITRANS Probe LU240 compact transmitter to the MultiRanger, HydroRanger, and SITRANS LUT400 controller series. For added confidence, the HydroRanger and SITRANS LUT400 series are MCERTS-certified.

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SITRANS L open-channel flowmeters

Open your mind to our open-channel flow portfolio. The SITRANS Probe LU240 is a 2-wire loop-powered ultrasonic level transmitter, bringing you the reliability of Sonic Intelligence echo processing. The MultiRanger and HydroRanger series consist of versatile single- and multi-vessel ultrasonic level controllers. And the advanced SITRANS LUT400 controller series offers the highest accuracy on the market.

Intelligence based on experience

Albert Einstein once said, “The only source of knowledge is experience.” Einstein knew that all the flashy bells and whistles in the world can’t make up for knowledge gained through experience – through the bumps and bruises, dirt and grime, and real-life conditions that a piece of technology needs in order to be truly innovative. Siemens level technology has this experience. Our video shows you how the intelligence built into our level devices truly makes the difference!

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The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support.

Service offers

To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

Service catalog

As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


What customers say about Siemens ultrasonic flowmeters


Whatever your process challenge – SITRANS L has you covered

Monitoring your processes with accurate open-channel ultrasonic flow measurement leads to higher transparency, improved productivity – and a better bottom line. To optimize every operation, Siemens offers a comprehensive selection of ultrasonic level transmitters, controllers, and transducers.

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