Abstract: An automation technology field device includes operating electronics and a plurality of parameters. The operating electronics are designed to operate the field device based on the parameters and obtain and process data based on the parameters. A firmware is a software container allocated to the operating electronics. The software container is designed to execute the installed code to establish, using the code, a communication connection to a distributed ledger via at least one of the outputs is a higher-level communication network, to integrate the field device in the distributed ledger-and to process and/or combine at least one part of the obtained and processed data into result data and to transmit the result data to the distributed ledger.

Abstract: A method of determining an interface height in a container of a thickener includes measuring said interface height with a level measurement device during time periods, when conditions permit, measuring process variables related to the thickening process performed by the thickener and calculating and providing a calculated interface height, wherein a calculating unit is designed to learn said calculation based on said measured interface heights and said measured process variables.

Abstract: A method for testing a measuring device using a reference measuring device, which is connected to a fieldbus system in a plant, to which fieldbus system, and a fieldbus access unit is connected. While testing the measuring device the measuring device remains connected to the fieldbus system and the measured values transmitted from the measuring device via the fieldbus system during the testing are transmitted by means of the fieldbus access unit to an evaluation unit, which evaluation unit is connected with the reference device, in order to compare the measured values of the measuring device with reference measured values of the reference measuring device.