Watlow's miniature FIREROD® cartridge heater is a high performance unit that features an 1/8-inch diameter and internal thermocouple option for temperature control, making it an ideal solution for space-restricted applications. The heater also features a helically wound resistance wire that produces high watt densities and contributes to long service life. "Small FIREROD heaters have the ability to work at a high watt density without compromising service life," said Hershey Feldstein, product manager. "This makes the heater ideal for space limitation problems within many industries." Similar to other FIREROD cartridge heaters, Watlow's 1/8-inch FIREROD sheath is resistant to oxidation and corrosion, even at high temperatures. It also undergoes a swaging procedure that is designed to improve dielectric strength, heat transfer and tolerance to shock and vibration. Users can achieve desired process temperatures more quickly, and the resistance wires operate at lower temperatures, which is ideal for reducing energy costs and an important factor in determining heater life. Swaging is a procedure that involves reducing a cartridge heater's diameter by compressing the cartridge heater body filled with magnesium oxide powder to a specific diameter around the resistance and lead wires. This reduces the spacing between the resistance wires and metal sheath, and compacts the magnesium oxide insulation, which minimizes insulation space and maximizes heat transfer. Watlow's 1/8-inch FIREROD is available with crimped-on or swaged-in leads with optional Teflon® moisture resistant seals and leads. Mounting options include a one-inch diameter mounting flange (FS flange), and a 90° angle-bend version. Features and Benefits
Miniature size Offers high performance in a small package Low mass Allows better heat transfer Provides quicker response time Adds to longer life due to lower internal temperature Swaged construction Provides higher watt density Offers higher temperature capability Allows maximum heat transfer Increases dielectric strength Internal thermocouple option Provides ideal solution for space-restricted applications Stock availability Offers stock heaters ranging in sizes from 1¼ to two inches (32 to 51 mm) in length. Check product
catalog for sizes and electrical rating. Applications Gas chromatographers Ink jet printers Packaging Freeze protection Teflon® is a registered trademark of E.I. du Pont de Nemours & Company.
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