Abstract: A measuring unit is provided, including at least one first primary positioning sensor and a connector for use in positioning a primary coil of a charging unit and a secondary coil of an electric vehicle. The measuring unit is designed in such a way that it can be fixedly connected to the charging unit by the connector, and the at least one first primary positioning sensor is designed to communicate wirelessly with at least one secondary positioning sensor of the electric vehicle during the positioning process. A charging device including a measuring unit and a charging unit is also provided.

Abstract: The present disclosure relates to a protective tube with a protective tube body, a duct for inserting a measuring insert, a first connection part, which is designed for the direct or indirect closure of a first opening in an outer wall section of a double-walled pipe or a double-walled container, a second connection part, which is designed for the direct or indirect closure of a second opening in an inner wall section of the double-walled pipe or of the double-walled container, a ventilation device which is designed to release a connection line between an intermediate space between the outer wall section and the inner wall section and the duct in a first setting permeable to gas, and/or an access device, which is designed to release a connection line between an external environment and the duct in a first setting permeable to gas and to close it in a second setting, impermeable to gas.

Abstract: The present disclosure relates to a transmission unit for use in measurement technology, a field device, a method for calibration of and/or error detection in a transmission unit, a diagnostic measure and a display unit. The display unit may be or is detachably connected with the evaluation unit, in which at least one diagnostic measure, comprising at least one test of a functionality of the evaluation unit, may be triggered over the display unit and/or the evaluation unit.