Heater Catalog - Watlow

Heater Selection MatrixHeating GasesHeaterTypeApplication DescriptionSheathMaterialsTypical Max. Max. OperatingWatt Densities TemperaturesW/in 2 W/cm 2 °F °CCatalogPageCartridge/InsertionHeatersThese heaters are mounted in pipes or vessels throughwhich gases pass. They can be placed in protection tubes,making access and wiring easier.Alloy 800 or stainlesssteel100 15.5 Contact Watlow 11TubularHeatersThese heaters have multiple elements mounted in an arrayand placed in a duct or vessel through which gases pass.Flat tubular elements can be modified with the addition offins to increase surface area.Flat: Alloy 800Stainless steelRound: Alloy 800Alloy 600303030304.64.64.64.61400120016001800760650870980237FlexibleHeatersThese heaters are applied to the surface of a pipe or vessel Polyimidecontaining gases. They are well suited for curved surfaces Silicone rubberand irregular shaped objects. Excellent for use in enclosures.550.80.8390500200260148117CirculationHeatersAirHeatersTubular heaters have multiple elements mounted in a screwplug or ANSI flange fitting and placed in a vessel throughwhich fluid is passed. FIREBAR or WATROD elements maybe utilized.Duct heaters have multiple elements placed in a ductthrough which gases pass.Enclosure heaters prevent freezing and condensation inelectrical and mechanical housings.Finned FIREBAR heaters have aluminized steel fins attachedto a FIREBAR element. They are used for forced air heatingand radiant heating in drivers, ovens and duct work.Finned Strip have aluminized steel fins attached to a375 heater. They are used for air heating, freeze protectionand load bank resistors.High- MULTICELL heaters have multiple elements placed in aTemperature duct or vessel through which gases pass. Designs are alsoHeaters available to heat a pass tube externally to isolate gas fromthe element. Excellent for use in high temperature/highpressure applications.Ceramic fiber heaters are used to construct chambers andfurnaces through which gases are passed. Heaters functionas high-temperature radiant heaters surrounding transferpipes or other special vessels.SpecialtyHeatersCoil/Cable heaters are sinuated or wound into coils, whichcan be inserted into a pipe or vessel to heat flowing air orgases. Cable heaters readily lend themselves to applicationswhere space is restricted.Flat: Alloy 800304 stainlesssteelRound: Alloy 800Alloy 600Alloy 800Stainless steelAluminumStainless steelAluminized steelAlloy 600Alloy 800Molded ceramic fiber3030303020 to 30155Up to 50306060304.64.64.64.63 to 4.62.30.87.74.79.39.34.61400120016001800140012001501200110021002100220076065087098076065066650595115011501205331391417419112Stainless steel orAlloy 600 30 4.6 1200 650 4674094254336WATLOW ®