Temposonics linear-position sensors use the time-based magnetostrictive position sensing principle developed by Temposonics. Within the sensing element, a sonic-strain pulse is induced in a specially designed magnetostrictive waveguide by the momentary interaction of two magnetic fields. One field comes from a movable permanent magnet that passes along the outside of the sensor. The other field comes from an “interrogation” current pulse applied along the waveguide. The resulting strain pulse travels at sonic speed along the waveguide and is detected at the head of the sensing element.

The position of the magnet is determined with high precision and speed by accurately measuring the elapsed time between the application of the interrogation pulse and the arrival of the resulting strain pulse with a high-speed counter. The elapsed time measurement is directly proportional to the position of the permanent magnet and is an absolute value. Therefore, the sensor's output signal corresponds to absolute position, instead of incremental, and never requires recalibration or re-homing after a power loss. Absolute, non-contact sensing eliminates wear, and guarantees the best durability and output repeatability.

G-Series model GT sensors are extremely robust and are ideal for continuous operation under harsh industrial conditions. The rod housing is capable of withstanding high pressures such as those found in hydraulic cylinders. G-Series redundant sensors provide accurate, linear-position measurement for applications that benefit from redundancy due to safety relevant functions.

G-Series Redundant sensors feature two or three independent measuring systems contained in one compact housing. Each measuring system contains its own channel with sensor element, power and evaluation electronics and output signal. Each channel has it's own output connector or cable.

All sensor elements are integrated in one pressure proofed, high-grade steel rod. Rod and housing style feature the approved standard dimensions with 10 mm (0.39 in.) diameter rod and 3/4-16 UNF or M18 x 1.5 threaded hex flanges. The redundant sensor easily installs in applications measuring linear movements of control valves, linear drives, fluid cylinders and machines.