Accurate long stroke position measurement

The MLW Series of long stroke linear position sensors is for accurate absolute position measurement of displacements up to 1.2 m. Available in ranges of 300 mm (11.8 in.) to 1,200 mm (39.4 in.), these contactless linear position transducers are for hydraulic cylinder and actuator feedback applications where the sensor can either be mounted externally or embedded into the cylinder or actuator body. Using magnetostrictive technology, each sensor transmits a current pulse through its tube that is reflected by a moveable permanent magnet. The sensor measures the time of flight to determine the position of the magnet on the tube. The time-based position measurement is translated into an output signal. Linearity is less than +/-0.25% and repeatability is +/-0.01% repeatability over the full scale with outputs that include analog voltage, current and SSI.