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1/8-INCH FIREROD® CARTRIDGE HEATERS
The Watlow FIREROD not only set the industry standard for cartridge heaters, it continues to make improvements in construction and design. Among these innovations is the 1/8-inch FIREROD. This miniature cartridge heater with swaged construction features high watt density, is capable of high operating temperature and provides long life in applications where it is essential to have a very small size. Like all of Watlow’s other FIRERODs, the 1/8-inch contains a resistance wire closer to the sheath and compacted MgO insulation, which maximizes heat transfer.
- Miniature size
- Low mass
- Swaged construction
- Numerous lead options available
- Outlasts competitors in life testing
MINIATURE SIZE
Delivers high performance in a small package and supports a wide variety of application requirementsLOW MASS
Offers better heat transfer, quicker response time and increased heater life due to lower internal temperatureSWAGED CONSTRUCTION
Higher watt density and temperature capabilities, maximum heat transfer and increased safety due to low leakageOPTIONAL INTERNAL THERMOCOUPLE
Reduces system footprint and measures temperature at point of applicationMANUFACTURED TO THE HIGHEST QUALITY STANDARDS
Backed by 50 years of industry expertise and outlasts competitors in life testingNUMEROUS LEAD OPTIONS AVAILABLE
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375 FINNED STRIP HEATERS
EFFICIENTLY CONDUCTS HEAT FROM NICKEL-CHROME ELEMENT WIRE TO THE SHEATH
Watlow’s 375 finned strip heaters are constructed of highly-compacted MgO-based insulation, which conducts heat efficiently from the nickel chromium element wire to the sheath. Two-inch wide (51 mm) aluminized steel fins are attached in a way that maximizes surface contact so heat is transferred into the air faster. Lower sheath temperature and element life are all maximized by this finned construction.
Finned strip heaters com in available lengths from 5 1⁄2 to 48 in. (140 to 1220 mm).
- Nickel chromium element wire is centered for heat uniformity
- Aluminized steel sheath operates at higher temperatures and reduces corrosion
- Optional 430 SS sheath provides a solution for extreme corrosive environments
- Welded post terminals produces strong connections
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375 HIGH-TEMPERATURE STRIP HEATERS
RUGGED HEATER CAPABLE OF HIGH TEMPERATURES AND HIGH WATT DENSITIES
Named for its 0.375 in. (9.5 mm) thickness, the rugged Watlow 375 strip heater is capable of both high temperatures and high watt densities.
Watlow begins construction by accurately placing a coiled, nickel-chromium element wire in the center of the heater. The element wire is then embedded in magnesium oxide (MgO)-based insulation compacted into a solid mass creating excellent heat conductivity and high dielectric strength. The heater is then enclosed in aluminized steel or 430 stainless steel sheathing.
- Nickel-chromium element wire is centered in the heater assures uniform heat
- Aluminized steel sheath operates at higher temperatures and resists corrosion
- Optional 430 stainless steel sheath meets temperature requirements that reach up to 1200°F (650°C)
- Over 100 in-stock models in popular sizes and ratings for next-day shipment
- UL® approved to 240VAC (File No. E52951) and CSA approved to 600VAC (File No. LR7392)
Material Maximum Operating TemperaturesF°C°Maximum Watt DensitiesW/in2W/cm2Aluminized Steel 1100 595 100 15.5 -
Ceramic Band Heaters
Ceramic band heaters are, in effect, high temperature electric furnaces capable of very efficient heat transfer by radiation, conduction and convection. Built-in insulation minimizes unwanted temperature changes along the barrel.
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CERAMIC FIBER HEATERS
THE BETTER FURNACE TECHNOLOGY HEATER
Ceramic fiber heaters offer some of the highest temperature heating element capabilities in the Watlow family of heaters. Heating units constructed of ceramic fiber insulation isolate the heating chamber from the outside. Ceramic fiber heaters are extremely low mass, high insulation value units with self-supported heating elements. Many applications can benefit from the convenience of the heating element and insulation combined into one package. Its lightweight, low-density properties make it ideally suited for high temperature applications requiring low thermal mass.
- High temperature ICA resistance elements bounds integrally into required position
- Lightweight, low-density alumina-silica composition molded into shape ensures a firm, thermal shock resistant, self-supporting unit at all operating temperatures
- Operating temperatures up to 2200°F (1204°C) provides high-temperature performance not possible with many other heater types
- Low mass ceramic fiber insulation allows the heater to reach process temperature quickly, efficiently heating the load instead of itself
- Works directly off common power line voltages eliminating the need for expensive transformers or complex power control systems
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Coiled Cable Heaters
Coiled cable heaters are the ultimate design in coiled type heaters. Their design and technical development gives them a longer lifespan than the competition, due to special features including:
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ECO-HEAT® SYSTEM
WATLOW’S ECO-HEAT SYSTEM FOR DIESEL GENERATORS UP TO 9L
Low exhaust gas temperatures (resulting from low load or low ambient conditions) can compromise the performance of your diesel generator’s aftertreatment system and eventually lead to unplanned downtime and expensive repairs. Whether your aftertreatment configuration has a DPF, an SCR or just a DOC, Watlow’s ECO-HEAT system delivers reliable electric heat that can quickly raise the exhaust gas temperature to the correct level.
Designed to be installed in the exhaust pipe, the ECO-HEAT system places heat directly where it is needed. It uses electricity from your diesel generator to operate when exhaust gas temperatures are too low. Unlike an external load bank that requires additional space and wastes heat to the surrounding environment, the ECO-HEAT system is compact and efficient. You can think of it as a smart internal load bank for your diesel generator. When you place a higher load demand on your generator, the ECO-HEAT system will shut off as the engine exhaust temperature reaches an acceptable threshold.
- Reduce fuel consumption by over 50 percent as compared to an external load bank
- Enables passive diesel particulate filter (DPF) to regenerate more effectively
- Avoid unplanned downtime and expensive service calls
- Eliminate the need for an external load bank
- Place exhaust heat exactly where it is needed
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FINBAR™ SINGLE- ENDED HEATERS
DESIGNED TO IMPROVE HEAT TRANSFER TO THE AIR
Composed of aluminized steel fins press-fitted to a one-inch single-ended FIREBAR element, the FINBAR finned tubular heater is designed to improve heat transfer to the air and permits putting more power in tighter spaces—like forced air ducts, dryers, ovens and load bank resistors.
Heat transfer, lower sheath temperature and element life are all maximized by the FINBAR heater’s finned construction. Installation is simplified by terminations exiting at one end and mounting accommodations on both ends.
- Rugged aluminized steel fins increase surface area to improve heat transfer to air
- Single-ended termination simplifies wiring and installation
- Stainless steel mounting bracket for ease of installation
- Lavacone seals provides protection against humid storage conditions – moisture retardant to 221°F (105°C)
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FIREBAR® SINGLE/DOUBLE-ENDED HEATERS
FIREBAR heating elements provide added heating performance over standard round tubular heating elements—especially for immersion applications in petroleum-based liquids requiring high kilowatts.
The FIREBAR’s unique flat surface geometry packs more power in shorter elements and assemblies, along with a host of other performance improvements. These include:
-Minimizing coking and fluid degrading
-Enhancing the flow of fluid past the element’s surface to carry heat from the sheath
-Improving heat transfer with a significantly larger boundary layer allowing much more liquid to flow up and across the sheath’s surface
FIREBAR elements are available in single- and double-ended constructions with one inch or 5⁄8 inch heights. These two configuration variables make it possible to use FIREBAR elements instead of round tubular elements in virtually all applications.FINBAR is a special version of the one inch, single-ended FIREBAR. FINBAR is specially modified with fins to further increase surface area for air and gas heating applications.
- 70 percent greater surface area per linear inch compared to a 0.430 in. (11 mm) diameter round tubular heater
- Compacted MgO insulation maximizes thermal conductivity and dielectric strength
- Precision wound nickel-chromium resistance wires
- 0.040 in. (1 mm) thick MgO walls transfer heat more efficiently
- Three resistance coil design readily adapts to a variety of electrical sources and wattages outputs
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FIREROD® CARTRIDGE HEATERS
FIREROD CARTRIDGE HEATERS ARE THE PREMIER CHOICE IN SWAGED CARTRIDGE HEATING
The FIREROD cartridge heater revolutionized the heating element industry in 1954 when it was patented as the first swaged cartridge heater. The mechanical procedure of swaging reduces the diameter of the heater by compacting the unit; this directly improves the heat transfer and efficiency of the heater.
FIREROD cartridge heaters are built using only the finest materials and construction methods and are backed with extensive quality assurance programs. With premium materials and tight manufacturing controls, the FIREROD heater provides superior heat transfer, uniform temperatures, resistance to oxidation and corrosion and a long life even at high temperatures.
FIREROD offers many delivery programs to meet your needs.
- Nickel chromium resistance wire ensures even, efficient distribution of heat to sheath
- Magnesium oxide insulation of specific grain and purity results in high dielectric strength and faster heat-up
- Alloy 800 sheath resists oxidation and corrosion from many chemicals, heat and atmospheres
- Minimal spacing between element wire and sheath results in lower internal temperatures and accommodates design with fewer or smaller heaters
- UL® and CSA approved flexible stranded wires with lead insulation rated to temperatures of 480°F (250°C)
PATENTED LEAD ADAPTER (LA) METHOD
Allows same day shipment on more than 150,000 configurations of stock FIREROD heaters and lead combinationsINTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) 9001 CERTIFIED
Provides confidence that quality and reliability expectations are metCONDUCTOR PINS
Provides a metallurgical bond to the resistance wire and ensures trouble-free electrical connection
Material Maximum Operating TemperaturesF°C°Maximum Watt DensitiesW/in2W/cm2Alloy 800 1400 760 400 62 Stainless Steel 1000 538 400 62 -
FIREROD® IMMERSION HEATERS
COMPACT HEATER ENABLES VERSATILE HEATING SYSTEM DESIGN
FIREROD water immersion heaters are ideal for replacing large screw-plug immersion heaters. Because of its compact size the product can be very versatile when designed into a heating system.
These water immersion heaters come complete with a brass 3⁄4 inch National Pipe Thread (NPT) double threaded fitting, which allows you to add conduit boxes. Also, FIREROD immersion heaters are sealed at the lead end with a silicone rubber seal.
Solid copper leads, with silicone rubber sleeves, are provided for unrestricted wiring. These units are recommended for immersion in water or 90+ percent water soluble solutions.
- Nickel-chromium resistance wire precisely centered in the unit ensures even, efficient distribution of heat to the sheath
- MgO insulation compacted to the proper density results in high dielectric strength and contributes to faster heat-up
- Alloy 800 sheath resists corrosion from water
- Metallurgically-bonded conductor pins for trouble-free electrical continuity
- 240 and 480VAC voltage allows flexibility in wiring the heater for use in your particular applications
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HIGH-TEMPERATURE FIREROD® CARTRIDGE HEATERS
SWAGED CARTRIDGE HEATER IDEAL FOR HIGH-TEMPERATURE APPLICATIONS
The Watlow HT FIREROD cartridge heater is especially designed for high-temperature platen applications up to 1600°F (871°C). The HT FIREROD high temperature cartridge heater utilizes the same industry leading design principles used on all of Watlow’s FIREROD products. Taking the cartridge heater one step further enables the HT FIREROD to withstand application temperatures up to 400°F (204°C) higher than standard cartridge heaters.
There are certain differences in the HT FIREROD design which are important in high temperature applications:
-HT FIREROD cartridge heaters are specially constructed with an end seal that is virtually airtight to reduce the effects of resistance wire oxidation
-The high-temperature sheath is treated to improve its emissivity for better heat transfer- High-temperature seal results in longer heater life
- Alloy 800 sheath transfers heat more efficiently
- High emissivity sheath provides better heat transfer and longer heater life
HIGH-TEMPERATURE SEAL
Reduces exposure to the atmosphere which minimizes oxidation of the winding wires resulting in longer life of the element; note: first 2 in. (51 mm) must be outside the platen in free airALLOY 800 SHEATH
Transfers heat more efficientlyHIGH EMISSIVITY SHEATH
Provides better heat transfer and longer life
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