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2 OVERVIEW WATTCO tubular elements are the most versatile and best suited solutions to a large number of applications. This is why they are found in major modern heating applications and are known for their superior qualities. Tubular elements can be: Clamped Immersed Cast into metal Easily removable Surface tubular elements are used for surface heating and are sold separately or made into process heating assemblies including: lange heaters Screwplug heaters Circulation heaters, vessels Strip elements Over-the-side heaters Cartridge heaters uct heaters and heaters Infrared heaters SELECTING WATTCO TUULAR HEATER epending on their rating, sheath and shape, WATTCO tubular elements are used in a variety of heat applications (conduction, convection, radiation heating) that require process temperatures of up to 750 C ( 38 ) to heat liquids, gases and solids. CLOSE UP KEY EATURES Standard diameters: 0.60, 0.35, 0.375, 0.430, and 0.65 Available in a broad variety of sheaths, diameters and ratings Supplied with electrically isolated sheath Provide superior internal electrical insulation and heat ENEITS Easy to install Configurable to virtually any shape Compact Precise and easy control of heat output urable Easy to maintain ACTORS Please consider the following factors to select the ideal WATTCO tubular heater for your application: Heating element watt density Sheath material (corrosive or non corrosive) Temperature of the corrodent egree of aeration of the corrodent Velocity of the corrodent Ambient temperature ( )

3 APPLICATIONS Water Water solutions non-corrosive to copper Oil Grease Alkaline cleaning solutions Tars Asphalt Corrosive liquids ood processing equipment Air heating Radiant heating Cleaning and degreasing solutions Plating and pickling solutions Corrosive liquids Acid Corrosive liquids SHEATH MATERIAL Copper Steel Stainless steel Incoloy, Inconel Titanium Incoloy and Inconel are registered trademarks of Inco Alloys International CONSTRUCTION TUULAR ELEMENTS EATURES AN COMPONENTS OVERALL LENGTH COL EN SHEATH LENGTH HEATE LENGTH COL EN SILICONE OR MICA INSULATOR NICKEL CHROMIUM RESISTANCE COIL CONCENTRICALLY POSITIONE HELIARC WELE COIL-PIN JUNCTION 0-3 TERMINAL HIGH PURITY MAGNESIUM OXIE ULLY COMPACTE PROTECTIVE METAL SHEATH ELECTRICALLY ISOLATE SEALING COMPOUN (OPTIONAL) ( ) 3

4 IG. A STANAR SHAPES ENING IG. R WATTCO tubular heaters are factory-configured to almost any shape or size. Custom bending diameters can be made upon request. igures A to K show some of the most popular element shapes. Select the shape that meets your requirements and refer to it when ordering or requesting prices. W IG. IG. G H IG. C IG. H W R IG. IG. I W C R3 E IG. J R3 R3 H IG. E E R3 IG. K W R4 H A IA H R 4 ( )

5 STANAR INSTALLATIONS igures L to W show some of the most popular type of installations. Select the installation that meets your needs and make reference to it before placing an order or requesting prices. KEY EATURES Unlimited number of custom bends available. Magnesium Oxide insulating properties. Great flexibility to meet application needs. Watt ensities of up to 0 WPSI available. Thicker sheath wall are available for intensive applications. Silicone seals to ensure moisture resistance in humid environments. Custom made cold sections are available. ENEITS Sheath temperatures of up to 00º. Numerous types of terminations available. IG. R - Clamped to walls, hoppers, and pipe s IG. S - To be inserted in drilled holes, plates or cylinders IG. T - In between plates IG. L - Ovens or cabinets IG. O - High wattage resistors or load bank s IG. U - Cast-in iron, aluminum, or copper IG. M - ucts IG. P - Radiating heat IG. V - ent to fit system shap e IG. N - Pipe wells IG. Q - To be immersed in liquids IG. W - inned heater assemblies ( ) 5

6 TALE Terminal Type Specification TERM. TYPE IM. W TH. SIZE MAX. VOLTS MAX. TEMPS SUITALE OR ELEMENT IAMETERS (in.) A /8"* #0-3* C a a a a a /8"* #0-3* C a a a a a C /8"* #0-3* C a a a a a /8"* #0-3* C a a a a a E /8"* #0-3* C a 3/6" #0-3* C a a a a a G 3/6" #0-3* C a a a a a H 3/6" #0-3* C a a a a a I /6" #0-3* C a a a a a J /6" #0-3* C a a a a a K /6" #0-3* C a a a a a L 5/6" N/A C a a a a a M 5/6" N/A C a a a a a N 5/6" N/A C a a a a a O /8" # C a O 3/8" # C a O 3/8" # C a O 5/8" /4" C a P N/A C a a a a a Q /" N/A C a a a a a R* 5/8" N/A C a a a a * /8 available as ; #0-3 available in #8-3; type R, W = /4 for and 3/4 for STANAR TERMINAL TYPES The following section shows the most common terminal types. Select the terminal type that meets your application and make reference to it before placing an order or requesting prices. NOTE: THE APPROPRIATE CURRENT O EACH TERMINAL TYPE PARTLY EPENS ON THE APPLICATION. CALL US OR ETAILS AT ( )

7 TALE Incoloy Sheathed Elements (8.0 mm) iameter HEATE LENGTH WATTAGE VOLTAGE ENSITY AMP CATALOG NUMER RESISTANCE in. mm W/in. W/cm , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT * /8 available as ; #0-3 available in #8-3; type R, W = /4 for and 3/4 for STANAR INSTALLATIONS ELEMENTS WITH 0.35 (8.0 MM) AN (0.9 MM) IAMETERS Incoloy sheathed elements are found in Table and. Elements with a 0.35 diameter are used at 40V or less (refer to Table ). Elements with a diameter (or larger) are suitable for a maximum voltage of 600V (refer to Table ). Manufactured in an extensive range of lengths, wattages voltages, ratings, and heated length combinations (0.60 up to 0.65 diameters). Available in a selection of sheath materials. or further details, please call us at.800.4wattco ( ) COL EN OVERALL LENGTH SHEATH LENGTH HEATE LENGTH COL EN ( ) 7

8 TALE Incoloy Sheathed Elements (0.9 mm) iameter HEATE LENGTH WATTAGE VOLTAGE ENSITY AMP CATALOG NUMER RESISTANCE in. mm W/in. W/cm , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT , 08, WT ELEMENTS (continued) ELEMENTS WITH 0.35 (8.0 MM) AN (0.9 MM) IAMETERS Terminal box can be added upon request. Cold end lengths can be designed to practically any desired length typically between 40 and 50 mm ( ). Elements can be shipped in less than 4 working days. Multiple elements are field wired in series or parallel or star & delta to better suit the requirements of your application. Multiple stages are also available. Custom elements can always be available to better meet your specific needs. or quicker deliveries, please consult the factory. Tubular elements can achieve extremely high temperatures and can be dangerous if improperly selected and applied. If you are unsure of your selection or if you require further assistance, please call us immediately at.800.4wattco ( ) When ordering, please specify the following: Quantity Catalogue no. Voltage Wattage Cold end length Terminal type Operating temperature and controls Sheath type 8 ( )

9 EXTRA EATURES THREAE ITTING (IG. ) razed, crimped or welded to the element s cold section. Used as a tight joint to the heater, which is fixed in open tanks or vessels. Supplied in brass, steel, or stainless steel. IG. COMPRESSION ITTING (IG. ) Available in nickel-plated brass for field installation on elements of 0.375, 0.430, elements diameter. IG. TERMINAL OX (IG. 3) Moisture resistant terminal boxes are: actory installed Note: Special requests can be made to have holes predrilled into the terminal boxes. This can provide easier tubular installation on site. Elements can require fittings to connect to the terminal box. IG. 3 MOUNTING HOLE IA. = " 3 ELEMENT CLAMP (IG. 4) The two-piece stainless steel clamps shown to the right can serve as element standoffs in ovens or tanks. Use half of the clamp with a stud welded to the tank or plate to suit clamp-on applications. Available C dimensions: /4, 7/6, 5/8 and 5/6. MOUNTING RACKETS (IGS. 5-7) WATTCO can crimp standard mounting brackets to elements to help with installation. Special brackets can be configured on to your elements. IG. 4 C PART NUMERS When ordering extra features, please provide the following catalogue numbers: IG... ESCRIPTION. IG.... Compression itting X0347 IG. 5 6" IG Terminal ox (small diameter) X0643 " IG Terminal ox (large diameter) X ,5" 3 4 IG Element Clamp X057 IG racket CL5975 IG racket N43 IG racket CL7654 IG. 6 IG. 7 " 0.5".6",5" Call us for details at.800.4wattco ( ) 3 4 ( ) 9

10 OVERVIEW Versatile, durable, and reliable, WATTCO finned tubular heaters are used for forced convection heating or air and gas heating systems. They are customized to meet your specific application needs. ACTORS AECTING TEMPERATURE Operating temperatures of finned element change according to the following factors: Air velocity Air temperature Watts per square inch of finned element IG. - Watt ensity vs. Air Temperature for 797º (45ºC) in Temperature 00 EATURES Various sizes of diameters Main sheath material: steel or stainless steel Standard fin material: steel or stainless steel SHEATH WATT ENSITY - W/IN PS 8 PS 4 PS 5 PS ENEITS Increase heat transfer surface area Safe to operate (minimal risk of fire or electrical shock) urable uilt solid Easy to maintain AIR TEMPERATURE - º As shown in igure, the combination of these factors results in a sheath temperature of 45 C (797 ). Note: These factors are approximate as fin efficiency and element spacing may bring about variations in temperature. Please consult factory for further information APPLICATIONS SHEATH MATERIAL IN MATERIAL orced circulation Steel Steel or Stainless ucts Steel Steel or Stainless an forced electric heaters Steel Steel or Stainless Recirculating ovens Steel Steel or Stainless COAT I N G S are steel Nickel-plated Aluminum painted lack enamel Loading resistors Steel Steel or Stainless 0 ( )

11 inned Tubular Heater SELECTING WATTCO INNE TUULAR HEATER Select the proper element by first specifying if the element has a minimum diameter of if the power supply voltage is more than 300V. epending on your requirements, special terminals can be installed on the 0.35 diameter elements so they can be used up to 600V. Standard fin sizes and pitches supplied by WATTCO are listed in Table above. Other sizes are available on special order. Watt ensity = Sheath watt density X Element surface area per lineal inch. etermine the number of heated length of element required for a specific wattage output. You will need more than one element for larger wattage or three-phase installations. IG. - Velocity vs. Air Temperature for a in Temperature of 800º (45ºC) A ±/ TYP ±/ AIR VELOCITY - T/MIN W/in. 9 W/in. 6 W/in. 5 W/in. 300 C MAX. OUTLET AIR TEMPERATURE - º NEE ASSISTANCE? Please call us at.800.4wattco ( ) or send a fax at for assistance when selecting your elements, as other factors that are not mentioned above should be taken into consideration. ( )

12 TALE inned Elements Without ittings IG. 3 IG. 4 IG A +/- / C +/- /4 E kw STANAR VOLTAGES.430 IA. ELEMENT: /8 O.. IN IM. A IM. IM. C IM. IM. E mm (in.) IG. 3 mm (in.) mm (in.) IG. 4 mm (in.) mm (in.) +/- /4 40,480, WT585JO WT585UO WT585WO 3 " WT586JO WT586UO WT586WO 4 " 3 5 WT587JO WT587UO WT587WO 5 " WT588JO WT588UO WT588WO 6 " WT589JO WT589UO WT589WO 7 " 6 89 WT590JO WT590UO WT590WO 8 " 59 0 WT59JO WT59UO WT59WO IG. 3 IG. 4 IG A +/- / CE /- /4 IG. 5 kw STANAR VOLTAGES.35 IA. ELEMENT: O.. IN IM. A IM. IM. C IM. IM. E mm (in.) IG. 3 mm (in.) mm (in.) IG. 4 mm (in.) mm (in.) +/- /4 40, 480, WT85JO WT85UO WT85WO 3 " WT86JO WT86UO WT86WO 4 " WT87JO WT87UO WT87WO 5 " WT88JO WT88UO WT88WO 6 " WT89JO WT89UO WT89WO 7 " WT90JO WT90UO WT90WO EXTRA EATURES: Refer to pages 6 and 9 WHEN ORERING, PLEASE SPECIY: Quantity, catalogue no., voltage, wattage, and extra features required. WATT ENSITY Typical WATTCO finned heaters have up to 30 watts/in of total heated surface area. If you require higher heat output, please consult with our sales department. MOUNTING The following heaters can be fixed with brazed, crimped, or welded plates (refer to igures 5 to 7 on page 9). Refer to page 6 to find out about standard elements with factory-fixed fittings for installation. ACTORS TO CONSIER WHEN SELECTING A SAE WATTAGE RATING Air velocity over heater Outlet air temperature Allowable sheath temperatures IG. 5 See igure on page to find out about the required air velocity to prevent overheating. ( )

13 TALE inned Elements With ittings IG. 6 IG. 7 G IA C G IA E +/- /4 kw STANAR VOLTAGES.430 IA. ELEMENT: /8 O.. IN IM. IM. G IM. IM. IM. E mm (in.) mm (in.) mm (in.) IG. 6 mm (in.) mm (in.) +/- /4 40,480, WT585U WT585W 3 " WT586U WT586W 4 " WT587U WT587W 5 " WT588U WT588W 6 " WT589U WT589W 7 " WT590U WT590W 8 " WT59U WT59W IG. 7 IG. 6 IG. 7 G IA C G IA E +/- /4 kw STANAR VOLTAGES.35 IA. ELEMENT: O.. IN IM. IM. G IM. IM. IM. E mm (in.) mm (in.) mm (in.) IG. 6 mm (in.) mm (in.) 40,480, WT85U WT85W 3 " WT86U WT86W 4 " WT87U WT87W 5 " WT88U WT88W 6 " WT89U WT89W 7 " WT90U WT90W EXTRA EATURES: Refer to pages 6 and 9 WHEN ORERING, PLEASE SPECIY: Quantity, catalogue no., voltage, wattage, and extra features required. +/- /4 IG. 7 SPECIAL WATTAGE A special watt density (watts/in of heated surface area) may be necessary for the following cases: Low air velocities High outlet air temperatures WATTCO heaters are available in lower wattage ratings (i.e., an air velocity of 800 ft./min. and an outlet air temperature of 500 ). In igure on page, it can be seen that 6 watts/in would be the maximum recommended watt density. As standard heaters are 0 watts/in, special elements with 6/0 or 60% of the kw ratings are required (refer to Tables or ). ( ) 3