LINEAR POSITION TRANSDUCERS
Linear position transducers are superbly suited for closed-loop control processes. They are available in non-contact (magnetostrictive and inductive) and contact-type (potentiometer) options.
The linear position transducers most frequently used in hydraulic cylinders are based on the magnetostrictive principle. Magnetostriction is the deformation of ferromagnetic materials due to the application of a magnetic field. This causes the body to undergo an elastic change in length at a constant volume.
A significant advantage is that they can be connected directly to typical bus systems, such as CAN bus or Profibus. Their maximum precision of 1 µm (39.37×10−6 inches) is superbly suited for very precise control of hydraulic cylinders. Their maximum possible measurement length is 4,000 mm (1,574.8 inches).