A machine suitable for recognizing a brewing chamber, said brewing chamber having at least one identifier comprising: - at least one chamber connector for enabling electrical connections of a temperature sensor, - the chamber connector enabling electrical connections of a temperature sensor having at least one terminal and at least one data pin, and - at least one first resistor, one pin of which is connected to the terminal of the chamber connector, and the other pin of which is connected to the data pin of the chamber connector, directly and/or via other components, - wherein the first resistor is a variable resistor, or a multi-position switch and multiple first resistors are connected to different positions of said switch, wherein the machine comprises: - at least one machine connector reciprocating the chamber connector when the brewing chamber is placed so as to perform the brewing process, - the machine connector having at least one terminal counterpart and at least one sensing pin, and - at least one second resistor, one pin of which is connected to the sensing pin of the chamber connector, and the other pin of which is connected to phase, neutral, ground or supply line of a power source, - a control unit having at least one digital and/or analogue input, wherein at least one of the said inputs is electrically connected to the sensing pin, - at least one temperature sensor for measuring the temperature of the materials, or a value representing it, in at least one brewing chamber, and at least one memory unit for holding the calibration data related to at least one brewing chamber, - wherein the control unit is adapted to run a calibration process as follows: ∘ when the calibration process starts, the control unit drives a heater such that it heats the liquid inside the brewing chamber, ∘ the data received from the temperature sensor at the boiling point of said liquid is stored in the memory unit as the calibration data, together with the data received from the sensing pin, ∘ when an already calibrated brewing chamber is placed on one of the machine connectors, the control unit receives from the sensing pin data relating to said brewing chamber, and afterwards, it receives the calibration data from the memory unit, corresponding to this data. - at least one chamber connector for enabling electrical connections of a temperature sensor, - the chamber connector enabling electrical connections of a temperature sensor having at least one terminal and at least one data pin, and - at least one first resistor, one pin of which is connected to the terminal of the chamber connector, and the other pin of which is connected to the data pin of the chamber connector, directly and/or via other components, - wherein the first resistor is a variable resistor, or a multi-position switch and multiple first resistors are connected to different positions of said switch, - at least one machine connector reciprocating the chamber connector when the brewing chamber is placed so as to perform the brewing process, - the machine connector having at least one terminal counterpart and at least one sensing pin, and - at least one second resistor, one pin of which is connected to the sensing pin of the chamber connector, and the other pin of which is connected to phase, neutral, ground or supply line of a power source, - a control unit having at least one digital and/or analogue input, wherein at least one of the said inputs is electrically connected to the sensing pin, - at least one temperature sensor for measuring the temperature of the materials, or a value representing it, in at least one brewing chamber, and at least one memory unit for holding the calibration data related to at least one brewing chamber, - wherein the control unit is adapted to run a calibration process as follows: ∘ when the calibration process starts, the control unit drives a heater such that it heats the liquid inside the brewing chamber, ∘ the data received from the temperature sensor at the boiling point of said liquid is stored in the memory unit as the calibration data, together with the data received from the sensing pin, ∘ when an already calibrated brewing chamber is placed on one of the machine connectors, the control unit receives from the sensing pin data relating to said brewing chamber, and afterwards, it receives the calibration data from the memory unit, corresponding to this data. ∘ when the calibration process starts, the control unit drives a heater such that it heats the liquid inside the brewing chamber, ∘ the data received from the temperature sensor at the boiling point of said liquid is stored in the memory unit as the calibration data, together with the data received from the sensing pin, ∘ when an already calibrated brewing chamber is placed on one of the machine connectors, the control unit receives from the sensing pin data relating to said brewing chamber, and afterwards, it receives the calibration data from the memory unit, corresponding to this data.