Abstract: A method and an arrangement is provided for measuring the tightness of a core composed of laminated sheets used in an electric machine. The method for measuring the tightness of a core of an electric machine composed of sheets, includes supplying a sound wave to the core, measuring the speed of the sound wave in the core, and deducing the tightness of the core from the measured data. The arrangement to measure the tightness of a core of an electric machine composed of sheets, includes a hammering system to pound at the core for generating a sound wave in the core, at least two accelerometers arranged at the core at an axial distance for measuring the speed of the sound wave, and a computer to deduce the tightness of the core from the measured data.

Abstract: A method and an arrangement is provided for measuring the tightness of a core composed of laminated sheets used in an electric machine. The method for measuring the tightness of a core of an electric machine composed of sheets, includes supplying a sound wave to the core, measuring the speed of the sound wave in the core, and deducing the tightness of the core from the measured data. The arrangement to measure the tightness of a core of an electric machine composed of sheets, includes a hammering system to pound at the core for generating a sound wave in the core, at least two accelerometers arranged at the core at an axial distance for measuring the speed of the sound wave, and a computer to deduce the tightness of the core from the measured data.

Abstract: The invention relates to a system for providing a site-related weather insurance contract for a product, such as an agricultural product like seeds or fertilizer. The system comprises a central data processing unit (CDPU), a remote measurement device (RMD) for the measurement of site-dependent weather parameters, and a remote data processing unit (RDPU) of a retailer. The RMD measures and provides the site-dependent weather parameters as remotely measured data. The RMD communicates the remotely measured data to a CDPU. The RDPU generates a data set (RDPU data) an insurance ID code and communicates the RDPU data to a CDPU. The CDPU receives the RDPU data and generates an individual contract confirmation code and communicates it to at least one remote communication device (UCD). The invention further relates to a method and a retailer remote communication device (RRCD), computer software, and a data storage medium, each usable with the system.

Abstract: The invention relates to a system for providing a site-related weather insurance contract for a product to be sold to at least one individual user.