VERFAHREN ZUR ÜBERWACHUNG DES ZUSTANDES EINER BESPANNUNG

In a paper manufacturing process an endless de-watering sieve or felt belt (12) is maintained under tension. The tension value is monitored by sensors (14) coupled to a computer (16) which evaluates the data to provide a two-dimensional presentation of the sieve or web condition in both longitudinal and transverse profile. The data captured is representative of at least one pre-defined property and is presented in map form using e.g. contours and colour. The map may be in two, or three-dimensional presentation e.g. in the form of a space frame, waterfall presentation or similar. The belt or sieve are scanned transversely. Also claimed is a commensurate sieve or felt belt monitoring assembly monitoring e.g. water content take-up capacity, actual water content, optical properties, temperature, elasticity, thickness, soiling, dampening etc.