PT101 Classic string pot series

PT101 Classic string pot series



Based on Celesco’s original string pot design dating back to the late 1960’s, the PT101 has become a standard throughout the years for literally thousands of applications including aircraft structural testing, hydraulic cylinder control, valve stem opening, and factory automation.

Available in full stroke ranges up to 100-inches, the PT101 provides a voltage feedback signal linearly proportional to the position of its traveling stainless steel measuring cable. Additionally the PT101 installs in minutes and doesn’t require perfect parallel alignment. Simply secure the base to a fixed surface and attach the measuring cable to your moving object.


  • Absolute Linear Position
  • Classic Stringpot Design 
  • Stroke Range Options: 0–2 to 0–100 inches 
  • Powder Painted & Anodized Aluminum Enclosure 
  • Industrial Automation & Testing Applications


Product Type Features

  • Product Type                                      Classic String Pot Series

Signal Characteristics

  • Output Signal                                     Voltage Divider (Potentiometric)

Body Features

  • Housing Material                                 Aluminum

Usage Conditions

  • Operating Temperature (Deg F)          -40 – 93 °C [ -40 – 200 °F ]


  • Resolution (mm)                                 Continuous Analog

Industry Standards

  • IP Rating                                             IP50
  • Hazardous Area Approvals                 No


  • Full Stroke Ranges                             50.8 – 2540 mm [ 2 – 100 in ]
  • Accuracy (% of FS)                            .1
  • Repeatability (% of FS)                      .02
  • Encoder Drive                                     No
  • Measuring Cable                                Nylon-Coated Stainless Steel