What measuring technology does CALIS use?

The sensor uses an optical Time-of-Flight (ToF) measuring principle for non-contact level measurement.

Does the sensor require calibration to the medium?

No. CALIS performs level measurement without adjustment to the material or container.

What measuring range is available?

The measuring range is configurable from 40 mm to 1200 mm.

Which communication interfaces are supported?

The sensor supports IO-Link V1.1 and a 4–20 mA analog output.

What makes CALIS suitable for railway applications?

It complies with railway standards such as EN 50155, EN 50121 and EN 45545 and was specifically developed for sand level monitoring in rail vehicles.

CAPTRON CALIS Non-Contact Level Sensor | ToF Level Measurement | CAPTRON

The CALIS Non-Contact Level Sensor is designed for continuous level measurement in harsh environmental conditions. Originally developed for monitoring sand levels in railway vehicles, the sensor has proven its reliability through extensive long-term testing and can also be used as a flexible limit switch or continuous level measurement solution in industrial applications.

The sensor complies with railway standards including EN 50155, EN 50121 and EN 45545, while its configurable design enables use in demanding environments beyond rail applications.

Using an optical Time-of-Flight (ToF) measuring principle, CALIS performs level measurement without contact with the medium and without requiring calibration to the material or container. This allows reliable measurement across a wide range of applications while simplifying installation and commissioning.

The compact sensor design makes installation possible even in confined spaces and complex tank geometries. The use of wear-free electronics, corrosion-resistant stainless steel housing and a glass optical window ensures an exceptionally long service life of more than 30 years without regular maintenance requirements.

The fully sealed construction protects against moisture ingress, while the integrated IO-Link interface enables flexible sensor configuration through the control system.