Tempco-Pak Cable Heaters
The densely compacted MgO insulation used in Tempco-Pak heaters produces excellent high temperature insulation resistance and dielectric strength. Heaters can be manufactured with the optional cold nickel leads internally spliced to the heating element wires within the same continuous sheath.Tempco-Pak heaters are flexible and can be readily formed or bent by hand or production machinery, with the minimum bend radius equal to twice the sheath diameter. The heater sheath can be welded, brazed or soldered without changing its electrical characteristics.
Eagle Sensors & Controls, Division of Excel Automation LLC, is an authorized Tempco distributor. Contact us for sales & technical support for Tempco heaters, Tempco sensors, Tempco temperature controllers, Tempco process heating systems & all other Tempco products.
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.
Internal Cable Construction
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.
Electrical Terminations
Type A: Stainless Steel Armor Cable
Type A1 – Rated to 482°F (250°C)
Type A2 – Rated to 450°F (232°C)
Type A3 – Rated to 842°F (450°C)
Flexible SS armor cable protects the leads against abrasion and contamination. Special plugs can be attached to heater leads and thermocouple leads.
Type B: Stainless Steel Overbraid
Type B1 – Rated to 482°F (250°C)
Type B2 – Rated to 450°F (232°C)
Type B3 – Rated to 842°F (450°C)
SS overbraid protects the leads against abrasion and allows more aggressive bending, which is not possible with armor cable.
Special plugs can be attached to heater and thermocouple leads.
Type C: Galvanized Armor Cable
Type C1 – Rated to 482°F (250°C)
Type C2 – Rated to 450°F (232°C)
Type C3 – Rated to 842°F (450°C)
Flexible galvanized armor cable protects the leads against abrasion and contamination. Special plugs can be attached to heater leads and thermocouple leads.
Type M: Plain Leads
Standard
M1 – High temperature cement potting with TGGT (Teflon® tape, fiberglass, Teflon® treated fiberglass overbraid) insulated lead wire for 482°F (250°C) and silicone sealed is standard.
Optional
M2 – High temperature epoxy potting rated 450°F (232°C) for a better moisture seal.
Optional
M3 – High temperature cement potting with MGT (mica tape, Teflon® treated fiberglass overbraid) insulated lead wire for 842°F (450°C) and silicone sealed.
Type S: Fiberglass Sleeve
Type S1 – Rated to 482°F (250°C)
Type S2 – Rated to 450°F (232°C)
Type S3 – Rated to 842°F (450°C)
Fiberglass sleeve protects the leads against abrasion and allows more flexibility of lead wires. Special plugs can be attached to heater and thermocouple leads.
Thermocouple Calibration
Type J
Built-In Type J Thermocouple
Type K
Built-In Type K Thermocouple
None
No Thermocouple needed