A linear transducer is a sensor or device that provides a signal, digital or analog, to a controller based on a position measurement. There are various technologies which are used for measuring linear position. Here is one of them.

Magnetostriction Measurement: 

Current pulses are sent through a magnetostrictive wire, positioned inside a protective tube, creating a ring shaped magnetic field around the wire. A non-contact permanent magnet serves as a position sensor. The magnetic field of the magnet interfaces with the magnetic field of the magnetostrictive wire. This interference causes a magnetostriction, resulting in a torsion pulse. The torsion pulse leaves the point of interference with constant ultrasonic speed, moving along the waveguide in both directions. The time difference between the transmission of the torsion pulse and its arrival at the sensing element (receiving coil) at the detector head is converted electrically into a distance proportional signal, which is provided either as a digital or analog output signal. These signals are then available for communication to the controller via is the measuring principle based on a travel time delayPoint to Point, Fieldbus and Ethernet interfaces. Magnetostriction linear encoders come in two standard housing (construction) designs; Cylinder Mount (Rod), and Profile Mount.

We have numerous styles to choose from to best suit your application along with many outputs to interface into your controller or PLC.

Call us if you have a linear position application, we have many years of experience with the technology and will help you find the best one suited for your company.

Applications:

Automatic Size Changing, Servo Hydraulic Feedback, Shut Height Feedback Monitoring, Gantry Applications, Dancer Arm Control, Trim Press Height, Proof of Mold Closure, In Cylinder for Hydraulic or Pneumatics.