Cable Displacement Sensors are precision measurement devices used in automation and industrial applications to monitor linear position or displacement. These sensors consist of a flexible cable wound around a drum, connected to a spring-loaded mechanism. As the cable extends or retracts, the sensor converts mechanical movement into electrical signals (e.g., voltage, current, or digital output). Key features include high accuracy (typically ±0.1% FS), rugged IP-rated enclosures for harsh environments, and compatibility with PLCs or data acquisition systems. Common variants include potentiometric, LVDT-based, and encoder-equipped models. Typical applications include hydraulic/pneumatic cylinder position tracking, conveyor belt alignment, and robotic arm movement control. Example products in this category: string potentiometers, draw-wire sensors with analog outputs (4-20mA/0-10V), and compact cable transducers with CANopen interfaces.