A measuring arrangement comprising: a measuring device for obtaining a filling level, a density, a flow rate and/or a pressure of a medium in a container; and a specification module configured to be mounted in a location separate from the measuring device; the specification module comprising container-specific data for specification of the container and/or specification of a medium in the container; wherein the measuring device comprises a wireless communication module configured to receive a specification signal, which correlates with the container-specific data of the specification module; wherein the measuring device is configured to activate parameterisation data associated with the container and/or the medium based on the specification signal; and wherein the specification module comprises an RFID transponder and a memory for storing the container-specific data; and wherein the communication module of the measuring device comprises an RFID module for reading and/or writing to the memory of the specification module, characterised in that the specification module is configured, to be attached at least partially to an outer surface of the container; in that the specification module is configured to be at least partially self-adhesive and/or self-adhering for attachment to the container; # in that the parameterisation data associated with the container are at least partially stored in a memory of a server; and in that the measuring device is configured, on the basis of the specification signal at least partially to download the parameterisation data associated with the container from the server. a measuring device for obtaining a filling level, a density, a flow rate and/or a pressure of a medium in a container; and a specification module configured to be mounted in a location separate from the measuring device; the specification module comprising container-specific data for specification of the container and/or specification of a medium in the container; wherein the measuring device comprises a wireless communication module configured to receive a specification signal, which correlates with the container-specific data of the specification module; wherein the measuring device is configured to activate parameterisation data associated with the container and/or the medium based on the specification signal; and wherein the specification module comprises an RFID transponder and a memory for storing the container-specific data; and wherein the communication module of the measuring device comprises an RFID module for reading and/or writing to the memory of the specification module, characterised in that the specification module is configured, to be attached at least partially to an outer surface of the container; in that the specification module is configured to be at least partially self-adhesive and/or self-adhering for attachment to the container; # in that the parameterisation data associated with the container are at least partially stored in a memory of a server; and in that the measuring device is configured, on the basis of the specification signal at least partially to download the parameterisation data associated with the container from the server.