Inspection unit in a canal and procedure for operation of the inspection unit

摘要

Procedure for the operation of an inspection unit (1) for the inspection and cross-section gauge of a channel tube (6, 56) with at least two axial sequentially aligned circular measuring sensors on a horizontal line (13, 14),for contactless detection of an inner contour of the channel tube (6, 56),where each circular measuring sensor (13, 14) detects the distance in a circumferential direction to the inner wall (32) of the channel tube at least two different arranged measuring circles (43, 44) without contact, where, in the case of a longitudinal movement of the inspection unit (1), an irregularity (26) in the channel tube (6, 56) is detected successively by the circular measuring sensors (13, 14) over the measuring circuits (43, 44) and the measurement results of which are used for the evaluation of the cross-section of the tube, and at least one flushing nozzle connected to the inspection unit (47) may be controlled.