Testing of evenness and determination of imperfections are essential for staple fibre spinning mills to control the quality of the slivers, rovings, and yarns during the complete spinning process. A spectrogram analysis of the mass distribution over the sample length gives important information to optimize the carding-, drawing-, combing- and spinning process.

Textechno’s innovative one-slot capacitive evenness sensor design for yarns allows for the measurement of all above-mentioned parameters at high testing speeds. In combination with the yarn Hairiness module (including total hairiness, yarn diameter, and hair length classification) COVAMAT S and COVATEST+ are perfect instruments for effective quality control and quality assurance.

COVAMAT S features a 24 position package changer whereas COVATEST+ is the manual version.