Pak Cable Heaters – Cable Type

Round Cable

Heating element is embedded in MgO insulation inside a round tube.

Square Cable

Heating element is embedded in MgO insulation inside a square tube. Because of the flat surface, in some applications square cable allows better heat conduction and a faster start-up time.

Rectangular Cable

Heating element is embedded in MgO insulation inside a square tube. Because of the flat surface, in some applications rectangular cable allows better heat conduction and a faster start-up time.

Straight Wire

Tempco-Pak heaters are made from M.I. cable having 2 straight heating element wires insulated from the sheath by high purity MgO.
Available in nominal sheath diameters from 0.040″ to 0.375″ (1mm to 9.5mm) in 304 stainless steel and Inconel® 600 for Tempco-Pak heaters with straight wire. Optional cold nickel lead spliced to heating element wire is available in 0.125″ diameter or larger depending on conductor material.

Straight Wire & Built-In Thermocouple

Tempco-Pak heaters with 0.125″ or larger diameter are also made from M.I. cable having 2 straight heating element wires and 2 straight thermocouple wires insulated from the sheath by high purity MgO. Optional cold nickel lead spliced to heating element wire is available in 0.125″ diameter or larger depending on conductor material.

Helically Wound Coil

Hi-Density Tempco-Pak heaters are manufactured from sheathed M.I. cable having 2 coiled heating element wires or 2 coiled heating element wires and 2 straight thermocouple wires. The non-heated portion has the largest possible diameter solid nickel cold pins attached to the heating element wires, providing maximum current carrying capacity within the same continuous sheath.
Available in nominal sheath diameters from 0.120″ to 0.153″ (3.05 mm to 3.9 mm) including 0.125″ O.D., 0.132″ O.D. and 0.143″ O.D.

Thermocouple Calibration