Heater Catalog (Section) - Immersion Heaters - Watlow

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Immersion HeatersWATROD and FIREBAR ANSI FlangeImmersion HeatersOrdering InformationPart NumberStock ANSI FlangePart NumberOptionalTerminalEnclosuresOptionalProcessSensorsSheathLimitSensorsStock ANSI Flange Part NumberNote: Catalog part numbers include optional enclosures andprocess sensors. To order optional enclosures or sensors, substitutethe appropriate suffix.Optional Terminal EnclosuresS = General purpose enclosureW = Moisture-resistant enclosureE = Explosion-resistant enclosureC = Moisture/explosion-resistant enclosureNote: Catalog listings include either a general purpose enclosureor moisture/explosion-resistant enclosure. Substitute enclosureoptions are noted.Sheath Limit SensorsHJ = Type J high-limit thermocouple, horizontal mountTJ = Type J high-limit thermocouple, vertical/housing at topBJ = Type J high-limit thermocouple, vertical/housing at bottomHK = Type K high-limit thermocouple, horizontal mountTK = Type K high-limit thermocouple, vertical/housing at topBK = Type K high-limit thermocouple, vertical/housing at bottomNote: Heater orientation is critical to accurate sensing of limitconditions. Use the appropriate code to indicate heater mountingorientation.Optional Process Sensors2 = 30 to 250°F, (-1 to 121°C) SPST3 = 175 to 550°F, (79 to 288°C) SPST4 = 30 to 110°F, (-1 to 43°C) DPST5A = 60 to 250°F, (16 to 121°C) DPST (FIREBAR)7A = 100 to 550°F, (38 to 288°C) DPST (FIREBAR)PJ = Type J process thermocouple in thermowellPK = Type K process thermocouple in thermowellNote: Thermostat part numbers are shown in the Thermostat Chart onpage 537.Example Part Number: FPS732R12 S 2 HJ306 WATLOW ®
Immersion HeatersWATROD and FIREBAR FlangeImmersion HeatersPlate Flange Immersion HeatersWatlow plate flange heaters are easy to install andmaintain. These products are designed for heating heattransfer fluids, medium and lightweight oils and waterin tanks and pressure vessels. Plate flange heaters areideal for applications requiring low to medium wattagerequirements.Watlow plate flange heaters are made with WATRODtubular elements that are brazed or welded to the flange.Stock plate flange heaters are supplied with generalpurpose or moisture-resistant terminal enclosures.Performance Capabilities• Watt densities up to 100 W/in 2 (15.5 W/cm 2 )• Wattages up to 18 kilowatts• Alloy 800/840 sheath temperatures up to 1600°F(870°C)• 304 stainless steel sheath temperatures up to 1200°F(650°C)• Steel sheath temperatures up to 750°F (400°C)Features and BenefitsRapid ship program• Minimizes downtimeDirect replacement for many OEM moldtemperature control units• Provides a single source supplier for manyOEM applicationsANSI compatible 2 and 2 1 /2 inch flanges• Provides appropriate heater size-to-application fitStandard general purpose or moisture resistantterminal enclosures• Offers easy access to wiring• Limits accidental contact with termination• Denies access to wiring connection in localenvironmentWATLOW ®307
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Immersion HeatersMax. Operating Typ
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Thermowell2.50" WATROD195½ in. Dia
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Immersion Heaters1.25" FIREBAR11WAT
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Immersion Heaters2" WATRODWATROD an
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Stand-offTerminalEnclosureConduitOp
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Direction of FlowImmersion HeatersW
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7½ in. Ref.(191 mm)75⁄8 in.(193.
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5"-150# FLANGEImmersion HeatersTher
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Heater Catalog (Section) - Immersion Heaters - Watlow

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