PT8420 Harsh-environment series

PT8420 Harsh-environment series



The PT8420 with its 4-20mA feedback signal, is ideal for monitoring the stroke of a hydraulic cylinder and other applications requiring position data acquisition in harsh environments.

As a member of our family of NEMA 4-rated cable- extension transducers, the PT8420 provides a feedback signal that is proportional to the linear movement of a traveling stainless-steel extension cable. Simply mount the body of the transducer to a fixed surface and attach the extension cable to the moving object.


  • Absolute Linear Position to 60 inches (1524 mm) 
  • Aluminum or Stainless Steel Enclosure Options 
  • VLS Option to Prevent Free-Release Damage 
  • IP68 / NEMA 6
  • Hazardous Area Certification 


Product Type Features

  • Product Type  PT8, Harsh-Environment Series

Signal Characteristics

  • Output Signal  4 – 20 mA

Body Features

  • Housing Material  Aluminum, Stainless Steel

Usage Conditions

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


  • Resolution (mm) Continuous Analog

Industry Standards

  • IP Rating  IP67, IP68
  • Hazardous Area Approvals  Yes


  • Full Stroke Ranges 50.8 – 1524 mm [ 2 – 60 in ]
  • Accuracy (% of FS) .15
  • Repeatability (% of FS) .02
  • Encoder Drive  No
  • Measuring Cable  All Plastic, Bare Stainless Steel, Nylon-Coated Stainless Steel