Improved contactless detection of vibrations in metal belts

A measuring arrangement in a transport device for a metal strip,

• wherein the measuring arrangement is arranged between a front device and a rear device of the transport device, said rear device being arranged downstream of the front device,
• wherein the measuring arrangement has a mechanical excitation device by means of which the metal strip can be excited so as to vibrate mechanically in its thickness direction at an excitation frequency (fA),
• wherein the measuring arrangement has a metal plate, the upper side of which faces the metal strip,
• wherein a plurality of sensor elements is arranged in the metal plate,
• wherein the sensor elements are arranged offset relative to one another as viewed in a width direction of the metal strip,
• wherein it is possible by means of the sensor elements to acquire for each of the plurality areas of the metal strip which are offset relative to one another in the width direction a measurement signal (MA) that is characteristic of the amplitude (A) of the excited mechanical vibration of the respective area of the metal strip, wherein:
• the sensor elements project towards the metal strip beyond the upper side of the metal plate and
• the measuring arrangement has a cover which consists of an electrically insulating material and covers the sensor elements on their upper side and seals them on their sides.