Pulse tachometer with sender connected to inductive proximity sensor

Pulse tachometer for measuring the rotation of a rotating element (A), comprising an inductive proximity sensor (10) placed in the vicinity of this element (A) in order to generate an electric pulse (100) upon each revolution of the element (A), characterized in that it comprises a sender (20) connected to this sensor (10) in order to receive this electric pulse (100), shape it and convert it into an optical signal, and an optical-fibre link (30) connected to this sender (20) and to a receiver (40) for receiving this optical signal from the sender (2)) and routing it to this receiver (40) in order to use it so as to calculate the speed of the rotating element, the said sender (20) comprising a shaping circuit (21) for stretching the duration of the electric pulse (100), and a converter (22) for converting the stretched electric pulse into an optical signal.