Patent ID: 6680619
Filing Date: 2004-01-20
Classification: G01N

Abstract:
Sensor device for registering voltage drops on corrosion exposed structures having a surface area, comprising:at least one contact chain having a supply terminal, said at least one contact chain disposed around said structure and said supply terminal in contact with said surface area for providing a voltage, and causing an excitation current in the area, a plurality of sensors arranged in a matrix defining measurement points with defined distances, to obtain signals related to the voltage distribution in the surface area as a basis for determining material thickness and/or structure in the measurement area, in this way determining wall thickness and/or the occurrence of corrosion and/or erosion defects each of said plurality of sensors comprising a support means (14, 52) holding and housing therein a row of contact members (37, 54) said contact members are held in engagement with the surface area of the measured material in the measurement area, wherein from each contact member an electric conductor (20, 52) is led to a cable terminal (19, 53), and wherein that the support means (14, 52) is pliable or multi-articulated, so that the contact members (37, 54) can be brought into engagement with curved surfaces and other non-flat surfaces.