Packaging machine with humidity sensor

The invention relates to a packaging machine (1), which comprises a control unit (2), at least one measurement device (5) and a plurality of work units (3) for different processes, wherein one of thework units is designed as a sealing station (17) which comprises at least one moisture sensor (F5) designed as the measurement device (5) which is functionally connected to the control unit (2) and isdesigned to detect moisture within the sealing station (17) as a time-dependent measured variable during a program sequence (P) of the sealing station (17), wherein the program sequence (P) comprisesan evacuation process, wherein the control unit (2) is designed to calculate a rate of change in the moisture during the evacuation process of the sealing station (17), and wherein the control unit (2) is designed to abort the evacuation process performed on the sealing station (17), based on the rate of change, before reaching a target vacuum pressure within the sealing station (17), immediatelyor after a specified delay