Draw Wire Sensors (String Potentiometers)
Draw-wire sensors, also called cable transducers or string pots, are low-cost and compact solutions for accurate measuring of an object’s mechanical position. Core components of a draw wire sensor are a precision measuring wire and a sensor element (e.g. potentiometer or encoder), which convert the path change into a proportional electrical signal. P3 Americas range of industrial draw wire sensors are capable of measuring displacements from 50 millimeters up to 42 meters. Draw-wire sensors utilize a flexible cable, a spring-loaded spool, and a sensor to precisely measure linear position. They do not need precise linear guidance and are ideal for wet, dirty, or otherwise harsh operating environments.