Heater Catalog - Watlow

Circulation HeatersWATROD and FIREBARCirculation HeatersPart NumberStock Plug or ANSI FlangePart NumberOptionalTerminalEnclosuresOptionalProcessSensorsSheathLimitSensorsStock Plug or ANSI Flange Part NumberNote: Catalog part numbers include optional enclosures andprocess sensors. To order optonal 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 = 40 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)J = Type J process thermocouple in thermowellK = Type K process thermocouple in thermowellNote: Thermostat part numbers are shown in the Thermostat Chart onpage 537.Example Part Number: CFONA18A10 S 5 HJ376WATLOW ®