Sensor device for the contactless acquisition of a rotation characteristic of a rotatable object

A sensor device for providing contactless acquisition of a rotation characteristic of a rotatable object, comprising:

• a sensor housing;
• at least one magnetic-field generator to generate a magnetic field at the location of the rotatable object;
• at least one magnetic-field sensor to detect a magnetic field generated by eddy currents of the rotatable object and
• at least one connection element set up to connect the sensor device to a device that includes the rotatable object, so that the magnetic-field generator and the magnetic-field sensor are at least partially disposed together in a sensor section of the sensor housing, and the sensor housing is set apart, from the device that includes the rotatable object;
• wherein the sensor section is in the form of a non-magnetic sleeve;
• wherein the sensor section is introduce-able into a receptacle in a wall of the device, and in the introduced state a coaxial air gap is situated between a wall of the receptacle and the sensor section;
• and
• wherein the receptacle is a blind hole in the wall of the device.

A sensor system, comprising:

• a sensor device;
• and
• a device that includes a rotatable object, the sensor device being mounted on the device that includes the rotatable object so that the sensor housing is at least regionally set apart from the device that includes the rotatable object;
• wherein the sensor device is for providing contactless acquisition of a rotation characteristic of the rotatable object, and includes:
• a sensor housing;
• at least one magnetic-field generator to generate a magnetic field at the location of the rotatable object;
• at least one magnetic-field sensor to detect a magnetic field generated by eddy currents of the rotatable object;
• and
• at least one connection element set up to connect the sensor device to the device that includes the rotatable object, so that the magnetic-field generator and the magnetic-field sensor are at least partially disposed together in a sensor section of the sensor housing, and the sensor housing is set apart, from the device that includes the rotatable object;
• wherein the sensor section is in the form of a non-magnetic sleeve;
• wherein the sensor section is situated in a receptacle in a wall of the device in such a way that a coaxial air gap is situated between a wall of the receptacle and the sensor section;
• and
• wherein the receptacle is a blind hole in the wall of the device.