Watlow Electric Electric Tubular Heaters manual W A T R O D T U B U L A R H E A T E R S

W A T R O D T U B U L A R H E A T E R S

WATROD Tubular

Heaters Provide

Optimum Manifold

Heating

Available in single- or double-ended termination styles, the versatile and economical WATROD tubular heating element lends itself to efficient heating of hot runner manifolds. The single-ended WATROD tubular design has both terminals at one end. The opposite end is sealed to resist contamination. Standard 305 mm (12 in.) flexible lead wires are crimp connected to the terminal pin and have silicone impregnated fiberglass oversleeves. With its round cross-section geometry, the double-ended WATROD is highly adaptable for bending – especially when bending is performed in the field.

Both single- and double-ended WATRODs share many construction features that deliver long life—the resistance wire is centered in the heater sheath and electrically insulated with compact, high-grade magnesium oxide for superior manifold heating. Watlow’s double-sided multicoil tubular elements offer various combinations of resistor coils and thermocouples inside one sheath. They have the ability to sense the heater’s internal temperature accurately every time, or offer three-phase capability in one element.

Performance Capabilities

Single-Ended WATROD

•Watt densities to 6.9 W/cm2 (45 W/in2)

•UL® and CSA component recognition to 240V~(ac)

•Incoloy® and stainless steel sheath temperatures to 650°C (1200°F)

Double-Ended WATROD

•Watt densities to 18.6 W/cm2 (120 W/in2)

•UL® and CSA component recognition to 480 and 600V~(ac) respectively

•Inconel® sheath temperatures to 982°C (1800°F)

Incoloy® , Inconel® and Monel® are registered trademarks of Special Metals Corporation (formerly Inco).

UL® is a registered trademark of Underwriter’s Laboratories, Inc.

© Watlow Electric Manufacturing Company, 2001

Features and Benefits

Precision wound nickel-chromium resistance wire

•Distributes heat evenly to the sheath for optimum heater performance

Silicone resin seals

•Protect against moisture contamination and manifold leakage and are rated to 200°C (390°F)

MgO insulation filled sheath

• Maximizes dielectric strength, heat transfer and life

Standard sheath materials include

•Copper, steel 316 stainless steel and Inconel®

•Optional materials, available on made-to-order, include 304 stainless steel, Inconel® , Monel® and titanium

36 standard bend formations

•Allows for exacting fit to the manifold

•Spirals, compound bends, multi-axis and multi-plane configurations

Resistance wire fusion welded to the terminal pin

• For a stronger, positive electrical connection

Stainless steel studs

•Fusion welded to terminal pins for mechanical strength with ceramic insulator

HAN-WRD-1001

Watlow Hannibal

#6 Industrial Loop Drive

P.O. Box 975

Hannibal, MO 63401

Phone: +1 (573) 221-2816

Fax: +1 (573) 221-3723

Internet: www.watlow.com

e-mail: info@watlow.com

Watlow GmbH

Lauchwasenstr. 1, Postfach 1165

Kronau 76709 Germany

Phone: +49 (0) 7253-9400-0

FAX: +49 (0) 7253-9400 44

e-mail: info@watlow.de