Capacitive Sensors

Non-contact proximity devices best suited for detecting nonmetals, solids, and liquids

Capacitive sensors are noncontact proximity devices suitable for detecting metals, nonmetals, solids,
and liquids. The oscillating circuit is influenced by variations in capacity. When any material comes close
to the active face, the capacity of the sensor varies and, if the threshold distance is passed, the sensor
switches the state of its outputs. Like for the inductive sensors, the operating distance is calculated
using a square piece of Fe37, with 1 mm thickness. The variation of the capacitance is due to the
conductivity or non-conductivity of the different materials. Conductive materials change the capacitance
of the sensor, while non-conductive materials change the dielectric constant of the reference capacitor;
the sensor feel the variation of the generated electric field by its active sensing face.
Datalogic offers a basic range for the Capacitive sensors, M18 and M30 tubular housing, in Direct or
Alternated Current, in nickel-plated brass or plastic housing, with timer and sensitivity adjustment
trimmer, equipped with the industrial standard outputs, suitable for the most common applications of
detection and in the filling level control of the materials.


  • IP67 protection
  • Operating distance: 5…25 mm
  • M18, M30 housing
  • Cable or M8 connector


Datalogic Sensor Product Guide
Datalogic Inductive and Capacitive Sensor Product Catalog