Probe for inspection of tubes of heat exchangers by means of the method of eddy currents with suppression of interference of Chicano

摘要

"The probe for inspection of tubes of heat exchangers by means of the method of eddy currents with suppression of interference of the Chicano." The present invention relates to a probe for eddy current testing, operating in single frequency, for inspection of tubes installed in the heat exchangers with elimination of interference of the chicanes.The device is composed of four coils of copper wire, mounted in a chassis or cylindrical housing. Electrically, the coils are connected in bridge of impedances, operating in differential mode, which combined the provision confers immunity to the sensor in the detection of discontinuities by the students.