Coil and Cable

The versatile Watlow coil/cable heater can be formed into a variety of shapes. Cable heaters are small diameter, high-performance units, fully annealed and readily bent to a multitude of configurations.

The cable heater can be formed into a compact, coiled nozzle heater supplying a full 360 degrees of heat with optional distributed wattage. A straight cable heater can snake through an equipment application. Flat spiral configurations can be used in high-tech manufacturing while a star wound cable can be used for air and gas heating.

Different applications require different construction methods, including one, two or four resistance wires; parallel coil or straight wire; drawn or swaged sheaths; with or without internal thermocouples; leads exiting from one or both ends, and round, rectangular or square cable cross sectionals.

Whatever the application, the Watlow coil heater and cable heater can be shaped to fit.

Specifications:

Material	Maximum Operating Temperatures		Maximum Watt Densities
Material	°F	°C	W/in²	W/cm²
304 stainless steel	1200	650	30	4.6
Alloy 600	1200	650	30	4.6

Continuous operating temperatures to 1200°F (650°C) with intermittent operating periods achieving up 1500°F (815°C) dependent on the type of element wire used
Sheath watt densities on the cable to 30 W/in² (4.65 W/cm²), and as high as 75 W/in² (11.62 W/cm²) subject to factory approval
Maximum voltage to 240V

Applications:

Plastic injection molding nozzles
Semiconductor manufacturing and wafer processing
Hot metal forming dies and punches
Sealing and cutting bars
Medical, analytical and scientific instruments
Restaurant and food processing equipment
Cast-in heaters
Laminating and printing presses
Air heating
Textile manufacturing
Heating in a vacuum environment

Features & Benefits:

Features	Benefits
High ductility	Allows the heater to be cold-formed into almost any shape
Low mass	Allows for quick response in both heating and cooling
Constructed with no open seams	Provides the capability of operating in unusual environments, including cryogenic and sub-freezing temperatures, high vacuum, gaseous and liquid immersion heaters Decreases opportunity for corrosion
Constructed of standard 304 stainless steel, optional 316 stainless steel or Alloy 600	Provides high-temperature corrosion and oxidation resistance along with ideal expansion properties
Heater sheath can be brazed	Allows the permanent attachment of mounted fittings to the heater, contact your Watlow representative
Sizes ranging from 0.040 in. (1.02 mm) to 0.188 in. (4.8 mm) diameter	Delivers a lot of heat into a tiny space
Internal construction options	Allows for internal thermocouples and no-heat sections (not available in all sizes)