• For pipe diameters from 0.5" to 180"
  • Operating Temperature: -40° to 250°F (-40° to 120°C)
  • Operating Frequency: 640 Khz
  • Stainless steel housing with epoxy face
  • 12 ft. shielded pair coaxial cable with connecting plug


The Greyline Instruments PSE4 is a non-intrusive, single-head ultrasonic sensor for measuring flow in any pipe material that conducts ultrasound including PVC, carbon steel, stainless steel, cast iron, fiberglass, and lined pipes. The clamp-on sensor is designed to fit on the outside of any pipe diameter 1/2" or larger.