Draw wire sensor

Draw wire sensors offer a simple solution to measure linear speed and position. Utilizing a flexible cable, a spring-loaded spool, and a sensor (an optical encoder with incremental, absolute, analog or potentiometric output), draw wire sensors can precisely measure linear position. Draw wire sensors do not need precise linear guidance and are ideal for wet, dirty, or outdoor environments and applications where your measuring range travels over harsh environments. These include applications in iron, steel, and wood (saw mills, joineries).

Draw wire sensors are also known in the industry as cable transducers, cable-extension transducers, string potentiometers, draw wire transducers, linear position string pots, and string encoders.