Temposonics Technology - Magnetostriction

Temposonics Technology is the manner in which MTS applies the principles of magnetostriction to create a reliable position measurement system for use in industrial environments.  Inside the sensor a torsional strain pulse is induced in a specially designed magnetostrictive waveguide by the momentary interaction of two magnetic fields. One field comes from a moving magnet, which passes along the outside of the transducer tube, and the other field is generated from a current pulse which is applied to the waveguide. The interaction between these two magnetic fields produces a strain pulse which travels at sonic speed along the sensor waveguide, until the pulse is detected at the head of the transducer. The position of the moving magnet is precisely determined by measuring the elapsed time between the application of the current pulse and the arrival of the strain pulse.  As a result, MTS is able to create a reliable position measurement system that is capable of providing an accurate and repeatable measurement.

Video Magnetostrictive Principle