Draw wire potentiometer
A draw wire potentiometer, also known as a string potentiometer or cable-extension transducer, is a sophisticated position sensing device that combines a flexible cable, spring-loaded spool, and precision potentiometer to measure linear displacement. This versatile sensor operates by converting linear motion into rotary motion as the wire is extended or retracted, which then translates into an electrical signal proportional to the distance measured. The device consists of a durable housing containing a spring-loaded drum around which a high-strength cable is wound. As the cable extends or retracts, the drum's rotation is coupled to a potentiometer that produces a corresponding electrical output signal. The measurement range can vary from a few inches to several meters, making these devices suitable for numerous industrial applications. The robust construction ensures reliable operation in challenging environments, while the precision engineering provides accurate and repeatable measurements. Draw wire potentiometers feature various output options, including analog voltage, current signals, or digital interfaces, allowing seamless integration with modern control systems and data acquisition equipment.
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