CALIS (Precise and rail-proof)


Continuous and precise measurement of fill levels in brake sand boxes of locomotives and tramways

  • Level measurement by optical ToF measuring
  • No need for regular manual checks of the sandboxes by the train driver
  • Refills can be planned as needed
  • Quick installation even in narrow spaces
    Installation is quick and easy, as no calibration is required without contact with the medium. The level probe also requires little space and is therefore suitable for complex, narrow tank geometries and installation situations.
  • Very long lifespan of more than 30 years
    The use of non-wearing electronics and corrosion-resistant materials means that no maintenance is required. The housing is made of stainless steel and the optics are fitted with a glass panel.
  • Space-saving and weather-resistant level measurement not only for sand
    All connections are completely sealed and the product is fully sealed so that no moisture can seep in.

Downloads CALIS

Product Images

[Translate to Englisch:] CAPTRON CALIS Füllstandsonde mit kontaktloser Messung

Technical Drawings


Application Images



Supply voltage DC 24 V (16,8...30,0 V)
Process connection V4A
Operating temperature -40 °C…+55 °C
Storage temperature -40 °C…+70 °C
IP protection level IP65
Measuring principle ToF
MTBF >175.000h
Communication interface analog output 4...20 mA
Laser Class (IEC 60825-1:2015-7) 940 nm Class1