Watlow Heater Catalog

Air Heaters

Max. Operating Temperatures

Typical Max. Watt Densities

Air Heaters

Sheath Materials

°F

°C

W/in 2

W/cm 2

Page

Duct Heaters LDH SERIES and D SERIES Alloy 840

375

1200

650

30

4.7

MDH SERIES

389

Alloy 840

1200

650

26

4.0

Finned 375 Finned Strip

393 399 400

Aluminized steel 304 stainless steel

1100 1200

595 650

33 50

5.1 7.7

FINBAR™ Single-Ended

FIREROD ® Cartridge Enclosure Heaters WATROD™ Silicone Rubber

Alloy 800

Application Specific 100

15.5

401 403

Alloy 840

390 500

200 260

15

2.3 0.8

Fiberglass reinforced silicone rubber 444 stainless steel (substrate tube), 316L stainless steel (baffle and fittings)

5

FLUENT ® In-line

406

482

250

150

23

(internal)

Air Heaters

373