Cartridge Heaters Ht Firerod

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HT Firerod Cartridge

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Cartridge Heaters HT FIREROD® Performance Capabilities • Platen temperatures to 1800°F (980°C) • Maximum watt density to 100 W/in2 (15.5 W/cm2) • Maximum voltage 277VÅ(ac) to ground • Length tolerance: +0, -4 percent standard diameters; +0, -8 percent for special diameters Features and Benefits • High temperature seal prevents exposure to the atmosphere which minimizes oxidation of the winding wires. The end result is longer life of the element. • Incoloy® sheath is treated for better emissivity, which transfers heat more efficiently.

Made-to-Order Availability Actual Diameter inches

Max Amps

⁄2 ⁄8

0.496 ± 0.004 0.580 ± 0.004 0.621 ± 0.004 0.710 ± 0.004 0.746 ± 0.004 0.960 ± 0.004 0.996 ± 0.006

10 23 23 46 46 46 46

1 5

⁄4

3

1

High Temperature Seal

Fiberglass Insulated Crimped-on Leads

Nickel-chromium Resistance Wire

Optional Ceramic Beads

Cartridge Heaters

Nominal Diameter inches

Magnesium Oxide Insulation

Contact the Watlow factory in St. Louis, Missouri, for special diameter requests.

Incoloy® Sheath

Applications • Thermo plastic • Superplastic forming of titanium aircraft parts • Diffusion bonding to laminate and shape titanium

Incoloy® is a registered trademark of Special Metals Corporation.

Insulation Boots

Conductor Pins

3" Minimum No-Heat Section

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HT Firerod Cartridge

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Cartridge Heaters HT FIREROD

Maximum Allowable Watt Density

0.090

Applications and Technical Data

0.080 0.070

Continued

0.060

0.050

0.040

0.030

0°F 120

0.020

0°F 130

0°F 140

°F

F

°F

1500

°F 1600

° 1700

1800

Fit in Hole Fit in (inches) Hole (inches)

New

0.010 0.009 0.008 0.007 0.006

0.005

10

20

30

40

50

60

70

80

90 100

Watt Density—W/in2

Options Options available on the HT FIREROD: • Thermocouples • Independently controllable heat zones

• • • • • • •

Bending (chart to the right) Distributed wattage MI leads Flanges Threaded fittings Post terminals Conduit NEMA boxes

Dia. in 0.496 0.580 0.621 0.710 0.746 0.996

Minimum Required No-Heat Length in (mm) 1 7⁄8 2 1⁄4 2 5⁄16 2 3⁄4 2 13⁄16 3 3⁄8

(47) (57) (59) (70) (71) (86)

Bend Radius in (mm) 1 3⁄4 1 1 1 1⁄4 1 1⁄4 1 1⁄2

(19) (25) (25) (32) (32) (38)

F.O.B.: St. Louis, Missouri

How to Order HT FIRERODs are available only as made-to-order units. To place an order, please specify: • Diameter • Overall length

110

• No-heat length, if greater than three inches (76 mm) • Volts • Watts • Intended application and temperature

• Atmospheric information • Lead type and length or terminal configuration • Options including finishing, internal construction and mounting.