Method for configuration of a field device for use in custody transfer and such field device

Method for the configuration of a field device for use in custody transfer, wherein the field device has a computing unit and a storage in which at least partially configurable parameters and/or functions are stored, comprising:

• providing at least two blocking groups organized according to functional criteria, wherein each of the at least two blocking groups comprises at least one blockable parameter and/or at least one blockable function of the field device for custody transfer,
• wherein each of the blocking groups comprises different choices of parameters and/or functions of custody transfer for providing flexibility in configuring the functions of the field device,
• selecting at least one of the at least two blocking groups by a user of the field device,
• evaluating with the computing unit the at least one blocking group selected, and
• blocking the at least one parameter and/or function contained in the selected at least one blocking group from being subsequently changed,
• wherein the blocking groups are provided in the storage of one of the field device and a control unit that is connectable to the field device,
• wherein the blocking groups are displayed and are selectable by the user of the field device using a display of one of the field device and the control unit, and
• wherein the computing unit evaluates the state of a blocking element of the field device and the computing unit first blocks the at least one parameter and/or function contained in the selected at least one of the blocking groups from being subsequently changed in a defined blocking state of the blocking element, so that a selection of parameters and/or functions for custody transfer is secured against manipulation occurring after blocking and wherein the parameters and/or functions of at least one of the at least two blocking groups that is unselected can, then, be subsequently influenced and configured for other functions of the field device.