• Contactless shaft rotational frequency transformation into alternating polarity signal.
  • Sensor output amplitude is directly proportional to mark linear speed.
  • Sensor output frequency corresponds to mark passing frequency.
  • Toothed wheels, grooves deepings and lugs in any ferromagnetic material can be taken as mark.
  • Differential principle of handling sensor signal exclude influence of electromagnetic noises on accuracy of rotational frequency to output signal transformation.
  • Sensors are produced in M24×1,5 housing with connector for external circuits or built-in oil- or heat-resisting cable.
  • Measured device – electronic tachometers TE-6K-TK-2-24V-D, TE-6K-TK, tachometric indicator TI-TK.



Output signal amplitude, V, not less 0,2*
Load resistance, Ohm, not less 4
Sensitivity for clearance 0.1 mm, V•s/m, not less 0,1**
Working clearance, mm  0.1..1
Operating temperature range +5°С..+90°С
Dust and moisture protection IP67
Housing thread


Housing length M12×1, mm


 * – for mark linear speed not less than 2 m/s.

** – for load resistance not less than 4 kOhm.


Ordering designation

Rotational frequency sensor DTK-2-М24.

DTK-1-M12 sensors are produced in standard modification with 2 m built-in cable without connector.

On the customer’s request sensor can be produced with non-standard parameters.