INTROCON operation is based on eddy current principle of nondestructive testing, and can inspect conveyor belts from 600 mm to 3000 mm width and thickness from 10 to 50 mm at speed up to 7 m/s. Conception of the instrument allows its upgrade to implement INTROCON into conveyor monitoring system.
INTROCON comprises basic unit and scanner, connected with cable. The software Wintrocon is delivered with the INTROCON. The INTROCON basic unit is designed to collect and store inspection data from the scanner, and displaying important inspection data on-line. Basic unit is battery operated and produced for operation in normal or explosive environment. The scanner of built-up structure comprises 2 or 3 modules assembled together with the fish and connected with cable. Active module has implemented electronic circuitry and distance counter as well as the socket to connect basic unit. Both active and passive modules are equipped with sensors, located crosswise the belt, so steel cords are scanned by individual sensor during inspection. Prior to inspection, the scanner is attached to the steel frame by means of suspension system in the manner, that the air gap between the scanner and belt surface, depending on the number and diameter of steel cords, is from 10 to 20 mm. Scanners of type from S-800 to S-1600 operate with 1 basic unit, while S-1800 to S-3000 require simultaneous connection of 2 basic units. Calibration of the INTROCON is required prior to inspection. Calibration procedure is carried with the belt under inspection and take very short time.