Procedure for measuring a measured variable in a process step of a manufacturing process and measurement chain for carrying out said procedure

A method for using a measurement chain, which includes an evaluation unit and a plurality of measurement units, for measuring a measured variable occurring in a process step of a manufacturing process and resulting from an interaction of a machine tool and a workpiece during the manufacturing process, wherein the evaluation unit includes a primary antenna, wherein each of the respective measurement units includes a respective sensor, a respective converter unit and a respective secondary antenna, the method comprising the following steps:

• disposing the workpiece and a tool of the machine tool relative to each other so that a measurement unit is positioned in a measuring position for measuring the measured variable;
• establishing a transmission connection between the respective secondary antenna of the respective measurement unit and the primary antenna so as to automatically couple the respective positioned measurement unit with the evaluation unit;
• using a respective sensor of the respective positioned measurement unit to automatically generate measurement signals representing the measured variable;
• using a respective converter unit of the respective positioned measurement unit to automatically convert the measurement signals into measurement data;
• and
• automatically transmitting the measurement data by the respective secondary antenna of the respective positioned measurement unit to the primary antenna.