TacTic developed a series of testers for linearly translated, flat-sided or round material using a new “glanded” version of our famous “flow-coupler” transducer shoes. These shoes are mounted in pairs in an air-actuated, photo sensor-controlled “follower” to ensure good coupling and beam orientation despite minor changes in test material position as it passes through the test station. Tester models are available with one, two, three or more pairs of transducers, each pair in its individual follower.

These testers are designed to handle material sizes ranging from 2 1/2 to 7 inches (63-178 mm). They include a self-contained drip-tank with a pump and filter for couplant recirculation. Separate handling equipment provides a translation of material through the tester. This equipment may be supplied by the user or designed by TacTic.

One of the primary uses of this tester is for normal beam (longitudinal wave) detection of internal defects in billets.