METHOD FOR MONITORING A ZONE OF A METAL FRAMEWORK FOR ITS ELECTRICAL RESISTANCE, AND DEVICE FOR MONITORING ELECTRICAL RESISTANCE IN A ZONE OF A METAL FRAME

摘要

Method for monitoring a zone of a metal structure in terms of its electrical resistance and Device for monitoring electrical resistance in a zone of a metal structure A method and device for monitoring a zone (2) of a metal structure (1) are described. of its electrical resistance in order to detect possible defects in the structure, periodically passing current in the zone in different directions, at the same time measuring and recording voltage drops in several of the selected unit areas (a11) in zone (2), and combining to each unit area (a11), at least two measured values recorded during at least two measurements made with the current passing in different directions, and comparing values obtained by at least one similarly obtained value previously made.