what is a string pot

what is a string pot


What is a String Pot?

A string pot, also known as a draw wire sensor or cable transducer, is an electromechanical device used to measure and monitor the linear position of an object. The device consists of a wire-wound string attached to a central body and is wrapped around a series of precision machined, longitudinal pulleys.

How Does it Work?

As the spooled string is moved through a device such as a screw, nut or linear actuator, the tension of the wire string changes due to mechanical output. This tension is then converted into an electrical signal that can be read from a display.

Uses of a String Pot

String pots are used to monitor a variety of industrial applications such as:

  • Pressure sensing systems
  • Reactors
  • Automation systems
  • Machinery and factory tracking
  • Level detection and flow rates

Advantages of a String Pot

Accuracy: The string pots are extremely precise since it accurately measures the linear position within 0.01 mm.

Durability: String pots are known to be durable and can withstand extreme environmental changes.

Cost: Despite their high accuracy, string pots are relatively low-cost.