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New Radar Solution for Level Measurement of Liquid Metal with Unprecedented Accuracy and Reliability

OndoSense is expanding its portfolio in the metal industry: The German radar specialist has developed a sensor solution for the level measurement of molten metal with unprecedented precision and stability. The robust and low-maintenance radar system reliably measures steel, aluminum, or copper levels at temperatures up to 1600 degrees, even in the presence of dust, fumes, smoke, vibrations, or sparks.

Image Credit: Ondosense 

The sensor usually does not need to be actively cooled, which makes commissioning significantly easier. The solution is based on the OndoSense apex radar sensor and features a measurement accuracy of up to 300 µm, a measurement rate of 300 Hz, and a measurement range of 0.1 to 15 meters.

As a result, OndoSense offers the most accurate and fastest radar sensor for the level measurement of liquid metal. The OndoSense radar solution not only contributes to increasing productivity and reducing costs, but also makes it possible to automate safety-relevant processes that can pose a risk to operators. In addition, it contributes to lowering CO2 emissions in the metal processing industry. Minimal maintenance, easy commissioning, Enhanced performance, and increased productivity are not the only advantages of the radar system.

For instance, the minimal maintenance effort required for radar technology ensures maximum availability:

“Radar has no moving parts or sensitive optics. As a result, the longevity of the sensors is very high. In addition, the radar sensor measures faultlessly even when the lens is dirty and only needs to be cleaned very rarely. Temperature fluctuations, metal splashes or reflections have no influence on the level measurement. Our radar sensor technology is easy to integrate and to place into operation. This guarantees an uncomplicated, reliable and highly productive level measurement,”

Mathias Klenner, OndoSense Co-CEO and founder.

Active cooling is usually not required. The sensor solution for molten metal level measurement based on the OndoSense apex radar sensor is suitable for crucibles, ladles, and troughs, as well as for furnaces or casting molds. As a general rule, active cooling of the level radar is unnecessary: “A protective window made of ceramic usually offers sufficient heat protection without affecting the high accuracy and quality of the measurements. We have developed an optional heavy-duty housing for special cases to shield the sensor electronics against extreme heat,” says Mathias Klenner.

With the OndoSense apex radar sensor, OndoSense sets new sensor and measurement technology standards for the metal industry. In addition to measuring the level of liquid metal, the range of applications for the sensor includes, among other things, the width and thickness measurement of semi-finished metal products in the rolling mill, the positioning of deslagging machines in batch furnaces and the position control of the steel strip for coating lines or picking system.

The OndoSense apex is also suitable for other industries and application areas with adverse production environments – e. g., the mining industry, mechanical and plant engineering, or the energy sector. Highest accuracy and speed – even in harsh environments. Whether dirt, smoke, steam, heat, or adverse lighting conditions, Our radar sensor solution offers measurement accuracy of 300 µm in addition to the high measurement precision of up to 1 µm, even in the extreme conditions of the metal and steel industry.

The OndoSense sensor solution thus sets a record in the radar market while at the same time meeting the high requirements of the industry:

“Many of our customers in the steel and metal industry not only need very precise measurements, i. e. with values matching as closely as possible in repeated measurements, but also very accurate measurements with the smallest possible deviation between the determined and real measuring values. We are proud to be able to offer our OndoSense apex customers an absolute measurement accuracy of up to 300 µm,” 

Axel Hülsmann, OndoSense CTO and founder.

You can find more information about the distinction between measurement accuracy and measurement precision in our radar glossary. Heavy-duty housing protects against extreme heat For applications with extreme heat generation, the radar solution features a heavy-duty housing to shield the sensor electronics, if required.

The solid stainless steel housing not only ensures passive heat dissipation: If necessary, the radar sensor can also be actively cooled using appropriate connections. The heavy-duty housing has a window that is covered with a heat-resistant ceramic pane.

This pane is transparent to radar radiation so that the radar sensor can be safely placed behind the window. This setup does not affect the high reliability and accuracy of the measurement.

Our solution for molten metal level measurement

- Highly accurate, reliable and fast level measurement

- Minimal maintenance with robust radar technology

- High productivity and easy integration

- Measurement range: 0.1 to 15 meters

Ultra-precise, fast radar sensor for distance & level measurements. OndoSense apex.

Ultra-precise, fast radar sensor for distance & level measurements. OndoSense apex. from OndoSense on Vimeo.

More information: https://ondosense.com/en/radar-sensors-industries-applications-solutions/radar-sensors-steel-and-metal-industry/fill-level-monitoring-of-molten-metal-aluminium/

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