Sensor arrangement comprising a sensor comprising - at least a sensor element, which detects at least one measured variable, wherein the sensor element is in electrical contact with a sensor circuit, - the sensor circuit, which processes values derived from data from a secondary coil and/or values derived from the measured variable, wherein the sensor circuit is in electrical contact with an Ex circuit, wherein the sensor circuit is subjected to a maximum input voltage (U_max) and to a maximum input current (I_max), and - the Ex circuit, comprising • the secondary coil, which receives an electrical signal from a primary coil assigned to the secondary coil, wherein the electrical signal comprises the data, particularly modulated data, particularly data superimposed on the electrical signal, • a voltage limitation (U_limit), which limits the voltage of the electrical signal to the maximum input voltage (U_max) of the sensor circuit, and • a current limitation (I_limit), which limits the current of the electrical signal to the maximum input current (I_max) of the sensor circuit; and a cable of a first type, which comprises a cable circuit with the primary coil, wherein the primary coil transmits the electrical signal with a maximum power (Po) to the secondary coil, wherein the primary coil and the secondary coil form an inductive coupling and the inductive coupling forms an Ex interface for the Ex-specific decoupling of the sensor from the cable. a sensor comprising - at least a sensor element, which detects at least one measured variable, wherein the sensor element is in electrical contact with a sensor circuit, - the sensor circuit, which processes values derived from data from a secondary coil and/or values derived from the measured variable, wherein the sensor circuit is in electrical contact with an Ex circuit, wherein the sensor circuit is subjected to a maximum input voltage (U_max) and to a maximum input current (I_max), and - the Ex circuit, comprising • the secondary coil, which receives an electrical signal from a primary coil assigned to the secondary coil, wherein the electrical signal comprises the data, particularly modulated data, particularly data superimposed on the electrical signal, • a voltage limitation (U_limit), which limits the voltage of the electrical signal to the maximum input voltage (U_max) of the sensor circuit, and • a current limitation (I_limit), which limits the current of the electrical signal to the maximum input current (I_max) of the sensor circuit; and - at least a sensor element, which detects at least one measured variable, wherein the sensor element is in electrical contact with a sensor circuit, - the sensor circuit, which processes values derived from data from a secondary coil and/or values derived from the measured variable, wherein the sensor circuit is in electrical contact with an Ex circuit, wherein the sensor circuit is subjected to a maximum input voltage (U_max) and to a maximum input current (I_max), and - the Ex circuit, comprising • the secondary coil, which receives an electrical signal from a primary coil assigned to the secondary coil, wherein the electrical signal comprises the data, particularly modulated data, particularly data superimposed on the electrical signal, • a voltage limitation (U_limit), which limits the voltage of the electrical signal to the maximum input voltage (U_max) of the sensor circuit, and • a current limitation (I_limit), which limits the current of the electrical signal to the maximum input current (I_max) of the sensor circuit; and • the secondary coil, which receives an electrical signal from a primary coil assigned to the secondary coil, wherein the electrical signal comprises the data, particularly modulated data, particularly data superimposed on the electrical signal, • a voltage limitation (U_limit), which limits the voltage of the electrical signal to the maximum input voltage (U_max) of the sensor circuit, and • a current limitation (I_limit), which limits the current of the electrical signal to the maximum input current (I_max) of the sensor circuit; and a cable of a first type, which comprises a cable circuit with the primary coil, wherein the primary coil transmits the electrical signal with a maximum power (Po) to the secondary coil, wherein the primary coil and the secondary coil form an inductive coupling and the inductive coupling forms an Ex interface for the Ex-specific decoupling of the sensor from the cable.