Watlow Heater Catalog

Tubular Heaters

WATROD Single/Double-Ended Heaters Specifications

1"

Double-Ended

Single-Ended

Applications

Direct immersion

Vacuums

Platens

Hot runner mold (manifold)

Semiconductor

Forced air

Forced air

Deicing antennas Plastic wrap cutting

Ovens

Radiant

Seal bars

Clamp-on

Watt Density W/in 2 (W/cm 2 )

Catalog P/N:

up to 60 up to 120 Dia. (mm)

(9.3)

Catalog P/N:

up to 20 up to 45

(3.1) (6.9)

Standard:

(18.6)

Standard:

Element Diameters

Dia.

in 2

cm 2

Dia.

in 2

Dia. (mm)

cm 2

in. (mm)

0.210 0.260 0.315 0.375 0.430 0.475

0.660 0.817 0.990 1.178 1.351 1.492

(5.33) (6.60) (8.00) (9.53)

(4.26) (5.27) (6.38) (7.60) (8.72) (9.63)

0.375 0.430 0.475

1.178 1.351 1.492

(9.53)

(7.600) (8.717) (9.626)

and Surface Area per Linear

(10.92) (12.07)

in 2 (cm 2 )

Diameter Tolerance ± 0.005 in. (0.13 mm)

(10.92) (12.07)

Sheath Materials Max. Operating

Standard:

Alloy 800/840

1600°F 1200°F

(870°C)

Standard:

Alloy 800/840

1200°F 1200°F 1200°F

(650°C) (650°C) (650°C)

316 SS

(650°C) (400°C) (650°C)

316 SS 304 SS

Temperature

Steel

750°F

304 SS

1200°F

Alloy 600

1800°F

(980°C)

Sheath Length By Diameter

Sheath

Sheath

Sheath

Sheath

Dia.

Length (in.)

Dia. (mm)

Length (mm) Dia.

Length (in.)

Dia. (mm)

Length (mm)

in. (mm)

Standard:

Standard:

0.210 0.260 0.315 0.375 0.430 0.475

9 to 130 9 to 270 9 to 270 11 to 360 11 to 360 11 to 275

(5.33) (6.60) (8.00) (9.53)

(230 to 3300) 0.375 (230 to 6858) 0.430 (230 to 6858) 0.475

11 to 125 11 to 106 11 to 125

(9.53)

(280 to 3175) (280 to 2690) (280 to 3175)

(10.92) (12.07)

(280 to 9144) (280 to 9144) (280 to 6985)

(10.92) (12.07) Sheath Length

Min. No-Heat Length

Sheath Length 11 to 20 21 to 50 51 to 80 81 to 110 111 to 140 141 to 170 171 to 200

No-Heat

No-Heat

Sheath Length 11 to 20 21 to 50 51 to 80 81 to 110 111 to 125

No-Heat

Sheath Length

No-Heat

Length

Length

Length

Length

in. (mm)

1 1 / 2 1 3 / 4 2 1 / 8 2 3 / 8 2 5 / 8

(280 to 5100) (533 to 1270) (1295 to 2030) (2055 to 2795) (2820 to 3175)

(38) (44) (54) (60) (67)

1

(280 to 510) (535 to 1270) (1295 to 2030) (2055 to 2795) (2820 to 3555) (3580 to 4320) (4345 to 5080)

(25) (32) (38) (42) (44) (51) (57) (64)

1 1 / 4 1 1 / 2 1 5 / 8 1 3 / 4

2

2 1 / 4 2 1 / 2

1 ⁄ 2 in. (13 mm) No-heat length on all blunt ends

(5105 & up)

201 & up

Max. Voltage/Amperage

Dia.

Volts

Amperes

Dia.

Volts

Ampere

By Dia. in. (mm)

0.260 0.315

(6.6) 250VAC (8.0) 480VAC

15 30 30 40 40

0.375 0.430 0.475

(9.53)

480VAC 480VAC 480VAC

30 30 30

(10.92) (12.07)

0.375 (9.53) 480VAC 0.430 (10.92) 600VAC 0.475 (12.07) 600VAC

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