A method for the contactless determination of the residual moisture content of moving flat webs and apparatus for carrying out the method

摘要

A method for the contactless measurement of the residual moisture content of moving flat webs of swellable material, such as textiles made of or with mixture proportions of regenerated or reclaimed material - or natural fiber materials, paper or photo film on the basis of the measurement of the electrical surface resistance, characterised in that in the region of the electric field of a high-voltage electrode (1) which is located between two arranged laterally thereof, is grounded metal surfaces (2) is located, there is a charge signal is influenced, the temporal behavior by means of in the direction of travel of the charge arranged successively over the path measurement probes (3, 4) and a charge arranged laterally from these measurement probe (5), are recorded, and from this the electrical surface resistance and, thus, the residual moisture content is determined.