Abstract: A multi display arrangement includes at least two display units. A pair of the display units consists of thin display units that are arranged in an overlapping manner. The display units are optically bonded to a cover glass. At least one of the display units has a surface that is arranged at least partly with a larger distance to an adjacent surface of the cover glass than a respective surface of a respective other display unit.

Abstract: The invention relates to a method for the determination, in particular for contactless determination, of an operating state of a compressor (1) and/or a rotational speed of a compressor drive (2), in particular of a variable-speed or fixed-speed compressor drive (2), having the following method steps: detecting a magnetic field over a time range by means of a detection element (3), wherein the magnetic field is generated by a current of at least one phase (L1, L2, L3) of a power supply cable (4); determining the frequency spectrum of the magnetic field over the time range; analyzing the frequency spectrum of the magnetic field in order to determine an operating state of the compressor (1) and/or in order to determine a rotational speed of the compressor drive (2).

Abstract: The disclosure relates to a method for determination of an operating state of a compressor and/or a rotational speed of a compressor drive of the compressor comprising; measuring, over a time range, a magnetic field associated with one or more phases of an electrical power supply conductor supplying the compressor with electrical power; wherein the magnetic field is measured by a detection element to provide a representation of the magnetic field; determining a frequency spectrum of the representation of the magnetic field over the time range; and analyzing the frequency spectrum of the representation of the magnetic field over the time range to determine an operating state of the compressor and/or to determine a rotational speed of the compressor drive. The disclosure further relates to a device for carrying out the method, a compressor measuring system, and a computer-readable storage medium.

Abstract: The disclosure relates to a method for determination of an operating state of a compressor and/or a rotational speed of a compressor drive of the compressor comprising; measuring, over a time range, a magnetic field associated with one or more phases of an electrical power supply conductor supplying the compressor with electrical power; wherein the magnetic field is measured by a detection element to provide a representation of the magnetic field; determining a frequency spectrum of the representation of the magnetic field over the time range; and analyzing the frequency spectrum of the representation of the magnetic field over the time range to determine an operating state of the compressor and/or to determine a rotational speed of the compressor drive. The disclosure further relates to a device for carrying out the method, a compressor measuring system, and a computer-readable storage medium.

Abstract: The invention relates to a method for the determination, in particular for contactless determination, of an operating state of a compressor (1) and/or a rotational speed of a compressor drive (2), in particular of a variable-speed or fixed-speed compressor drive (2), having the following method steps: detecting a magnetic field over a time range by means of a detection element (3), wherein the magnetic field is generated by a current of at least one phase (L1, L2, L3) of a power supply cable (4); determining the frequency spectrum of the magnetic field over the time range; analyzing the frequency spectrum of the magnetic field in order to determine an operating state of the compressor (1) and/or in order to determine a rotational speed of the compressor drive (2).

Abstract: The disclosure relates to a method for determination of an operating state of a compressor and/or a rotational speed of a compressor drive of the compressor comprising; measuring, over a time range, a magnetic field associated with one or more phases of an electrical power supply conductor supplying the compressor with electrical power; wherein the magnetic field is measured by a detection element to provide a representation of the magnetic field; determining a frequency spectrum of the representation of the magnetic field over the time range; and analyzing the frequency spectrum of the representation of the magnetic field over the time range to determine an operating state of the compressor and/or to determine a rotational speed of the compressor drive. The disclosure further relates to a device for carrying out the method, a compressor measuring system, and a computer-readable storage medium.