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Lightweight Heated Sample Lines

Lightweight Heated Sample Lines


Apex Instruments lightweight heated sample lines are designed for the professional stack tester that needs a ruggedized line in a lightweight package. The standard core includes one 3/8-inch PFA tube for the sample and one 1/4-inch tube for introducing calibration gas at the probe.

The line can be regulated at temperatures of 49°C, 60°C, 80°C, 100°C, or 120°C with the use of an external temperature controller utilizing built-in thermocouples. One or two type-K thermocouples can be used for temperature regulation.

The outer cover is made of TUFF-GUARD, a corrugated polyamide capable of withstanding up to 105°C continuously. Type-K thermocouples feed-throughs and 3-prong power feed-throughs are available upon request.

SKU: HSL-CL-❒-❒ Category:



  • PFA tubing with stainless steel overbraid
    • Heated sample; 3/8-inch
    • Unheated calibration gas; 1/4-inch
  • Two 1/4-inch Nomex® insulation layers
  • Internal nylon braid
  • Lightweight and flexible
  • Bend radius: 10 inches
  • Stainless-steel tube stubs
  • TUFF-GUARD outer sheath


  • Spiral-wound heating element for uniform heat distribution
  • Supply voltage 120 V or 240 V
  • Maximum temperature rating 400ºF (200ºC)
  • Tube maintenance up to 400ºF (200ºC) at 25ºC
  • Type-K thermocouple for the control sensor
  • Nominal O.D. 1.75-inch
  • Weight 42 lb for 100 ft

Apex offers temperature controllers for use with non-self-regulating lines!

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