The rotational speed sensor ДЧО-02 by JSC "Izmeritel".
The rotational speed sensor ДЧО-02 is necessary for forming the electrical pulse signal, which is proportional to the speed of the rotation of the ferromagnetic element, which moves in front of the sensor face when the gaps between the end face of the sensor and the surface of the ferromagnetic element are from 0,1 to 3 mm.