Abstract: A current measurement device for measuring a current through a primary conductor is provided. The current measurement device comprises a current transducer of the Rogowski type, the current transducer comprising a conductor winding connected to a pair of transducer terminals and adapted to induce there between a measurement voltage indicative of a current through the primary conductor; a pair of calibration terminals adapted for providing a calibration current to a calibration current path conforming to the primary conductor, so that the calibration current induces a calibration response voltage component between the pair of transducer terminals; and a control circuit.

Abstract: A current measurement device (1) for measuring a current through a primary conductor (2) is provided. The current measurement device comprises a current transducer (10) of the Rogowski type, the current transducer comprising a conductor winding (12) connected to a pair of transducer terminals (14) and adapted to induce there between a measurement voltage indicative of a current through the primary conductor (2); a pair of calibration terminals (24) adapted for providing a calibration current to a calibration current path (22) conforming to the primary conductor (2), so that the calibration current induces a calibration response voltage component between the pair of transducer terminals (14); and a control circuit (30).

Abstract: A method for producing an underwater foundation element in a bed of a body of water, in which a working platform for guiding a drilling tool is lowered to the bed of a body of water, so that a drill-hole is introduced into the bed of a body of water and a pile-shaped underwater foundation element is arranged in the drill-hole and anchored therein. A precise alignment is achieved in that on the pile-shaped underwater foundation element a measuring unit is fixed, through which positional data of the pile-shaped underwater foundation element are determined and in that depending on the determined positional data the position of the underwater foundation element is set by at least one positioning means on the working platform prior to anchoring. The measuring unit is arranged on an adjustment head.

Abstract: The invention relates to a method for producing an underwater foundation element in a bed of a body of water, in which a working platform for guiding a drilling tool is lowered to the bed of a body of water, with the drilling tool a drill-hole is introduced into the bed of a body of water and a pile-shaped underwater foundation element is arranged in the drill-hole and anchored therein. A precise alignment is achieved in that on the pile-shaped underwater foundation element a measuring unit is fixed, through which positional data of the pile-shaped underwater foundation element are determined and in that depending on the determined positional data the position of the underwater foundation element is set by means of at least one positioning means on the working platform prior to anchoring. In accordance with the invention the measuring unit is arranged on an adjustment head.