Best Seller Items
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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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INSULATED TUBE & WIRE THERMOCOUPLES STYLE 62
SERV-RITE® INSULATED TUBE & WIRE THERMOCOUPLES – STYLE 62
STYLE 62 IS FITTED WITH AN ENCAPSULATED MEASURING JUNCTION THAT IS IDEAL FOR CORROSIVE FLUIDS AND GASES, SUCH AS SULFURIC ACID, HYDROFLUORIC ACID, STRONG MINERAL ACIDS AND OILS
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SERIES CZR
SOLID STATE RELAY OFFERS A COMPACT, VERSATILE MERCURY-FREE SOLUTION
The SERIES CZR solid state relay provides a low-cost, highly-compact and versatile solid state option for controlling electric heat. With DIN-rail and back panel mounting standard on every controller, the CZR solid state relay allows for simple and quick installation.
The extensive capabilities of the SERIES CZR include single-phase, 18 to 42 ampere zero-cross switching up to 600VAC (see output rating curve). It’s unique integrated design removes the guess work associated with selecting a proper heat sink and precise terminations for the application.
This solid state relay controller holds many agency certifications and is ideal for applications that require UL®, CSA and CE approvals. The SERIES CZR is available in VAC/VDC input contactor versions and all configurations are model number dependent and factory selectable.
The SERIES CZR solid state relay is protected by a two-year warranty.
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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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MINERAL INSULATED THERMOCOUPLES – STYLE AC – STANDARD PLUG OR JACK TERMINATION
WATLOW’S MINERAL INSULATED (MI) THERMOCOUPLES ARE FAST-RESPONDING, DURABLE AND CAPABLE OF HANDLING HIGH TEMPERATURES.
Manufactured with best-in-class XACTPAK®, Watlow’s trademark for metal sheathed, mineral insulated (MI) thermocouple material, XACTPAK responds fast because the protective metal outer sheath allows use of smaller diameter thermocouple conductors. The rock hard compacted MgO insulation further enhances the sensor’s ability to “read” temperature by transferring heat quickly to the measuring junction.
The XACTPAK protecting sheath and compacted insulation outperform bare wire thermocouples in most applications
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LDH SERIES AND D SERIES DUCT HEATERS
EASILY ADAPTED TO MANY NON-PRESSURIZED AIR HEATING SYSTEMS
Watlow duct heaters are constructed of sturdy 0.430 in. (11 mm) diameter WATROD heating elements mounted to a 1⁄4 in. (6 mm) thick steel flange. These air duct heaters are easily adapted to many non-pressurized air-heating systems.
Duct heaters are easily installed in applications requiring a wide range of temperature versus air flow combinations.
The modular duct heater offers increased reliability. The individual modules are removable through the housing of the assembly, which eliminates the need to pull the complete heater from the ductwork. This reduces downtime costs because the heating elements can be replaced individually. Performance improvements include quicker response time and reduced infiltration from the air stream being heated into the electrical enclosure.
Watlow air duct heaters offer advantages over gas or oil fired and open coil electric units with:
-Installation flexibility—no flues or fuel lines
-100 percent energy efficient—no energy loss up the flue
-Universal availability of electricity
-Resistance coil in sheath is protected from corrosive environments
-Duct heaters with general purpose enclosures meet UL® and CSA component recognition to 480 and 600VAC maximum respectively—UL® and CSA file numbers are E52951 and 31388.- Long life alloy 800 sheath resists corrosion/oxidation while protecting resistance coils against contamination
- MgO insulation filled elements compacted to rock hard density maximizes dielectric strength, heat transfer and life
- Field replaceable heating elements permits easy service and reduces downtime
- General purpose terminal enclosure offers easy access to wiring
- WATROD hairpins are recompacted after bending to eliminate hot spots and electrical insulation voids
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SOLID STATE RELAYS
MORE FOR LESS: LONGER HEATER LIFE AT LOWER COST
Watlow solid state relays (SSR) offer many of the advantages of solid state power controllers, but at a lower cost. Watlow’s extensive knowledge in power controller design led to the development of a special fast cycle input card that enables a solid state relay to operate from a standard 4-20mA instrumentation command signal. Test results show that zero-cross solid state relays in combination with the fast cycle card promote better temperature control and longer heater life than slow cycle relays. Through a time proportional cycle rate of 1⁄10 of a second, heater life will be extended.
Both low and high voltage solid state relays are available from 24 to 660VAC. All ac output models include back-to-back silicon controlled rectifiers (SCRs) for a more rugged design than the traditional triac-based solid state relay. The internal design allows it to tolerate high currents and harsh electrical environments of heavy industry. Watlow also offers a switched VDC model for dc heating applications.
Watlow provides all of the components necessary for trouble-free operation. This includes two standard convenience items: a thermal foil to ensure proper thermal transfer from the relay to the heat sink and belleville washers to ensure that the relay is mounted with sufficient pressure to enable good heat transfer. Matched semiconductor fuses and heat sinks are available to complete the power switching package.
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STAINLESS STEEL SHIM TUBE & WIRE THERMOCOUPLES – STYLE 75
STAINLESS STEEL SHIM TUBE & WIRE THERMOCOUPLES – STYLE 75
THE SHIM STOCK THERMOCOUPLE HAS A LOW PROFILE AND CAN BE PLACED BETWEEN COMPONENTS FOR SURFACE TEMPERATURE MEASUREMENT
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STANDARD INDUSTRIAL INSULATED LEADS – STYLE RB – RESISTANCE TEMPERATURE DETECTORS
ACCURATE, REPEATABLE AND INTERCHANGEABLE OVER A WIDE OPERATING RANGE
Watlow manufactures a variety of RTD sensors that are specially designed to ensure precise and repeatable temperature measurement. Watlow sensors are built to meet the most demanding industrial applications while providing a lower total cost of ownership for our customers. -
SURFACE MOUNT S80 – SPECIALTY CONSTRUCTION – RESISTANCE TEMPERATURE DETECTORS
ACCURATE, REPEATABLE AND INTERCHANGEABLE OVER A WIDE OPERATING RANGE
Watlow manufactures a variety of RTD sensors that are specially designed to ensure precise and repeatable temperature measurement. Watlow sensors are built to meet the most demanding industrial applications while providing a lower total cost of ownership for our customers. -
THERMISTORS
FAST, ACCURATE, REPEATABLE TEMPERATURE MEASUREMENT
Watlow thermistors are designed to ensure fast, accurate and repeatable temperature measurement. Thermistors are highly sensitive to small changes in temperature and maintain accurate temperatures over a limited range. These sensors are made with either epoxy-coated or glass-coated constructions and can be used in the most demanding environmental conditions.
- Designed to maintain accuracy over the life of the sensor improves process control
- High resistance reduces the chance for errors
- Interchangeable maintains good system repeatability
- Point sensitive senses temperature in a very specific location
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TRUE SURFACE THERMOCOUPLES – STYLE TST
INCREASE SURFACE TEMPERATURE ACCURACY WITH IMPROVED THERMOCOUPLE DESIGN
Watlow’s TRUE SURFACE thermocouple (TST) offers superior accuracy for measuring flat surface temperatures. This compact, highly accurate sensor isolates the thermocouple junction from ambient airflow. The TST typically achieves accuracy and repeatability between one to two percent (ΔT).
The TST, with its removable molded cover, fits into corners and other tight locations. TSTs are easy to install with a variety of commonly used screw types.
Watlow’s TST sensor is ideal for many applications including semiconductor chambers, platens, packaging, cleaning and food preparation.
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WATROD AND FIREBAR ANSI FLANGE IMMERSION HEATERS
AGENCY CERTIFIED TUBULAR HEATERS IDEAL FOR HEATING LIQUIDS, GASES, TANKS AND PRESSURE VESSELS REQUIRING HIGHER KILOWATTS
Watlow flanged immersion heaters are easy to install and maintain. Designed for heating liquids and gases in tanks and pressure vessels, flanged immersion heaters are ideal for applications requiring higher kilowatts.
Watlow flanged immersion heaters are made with WATROD or FIREBAR tubular elements brazed or welded to a flange. Stock flange heaters are equipped with a general purpose terminal enclosure.
Flanged immersion heaters, with FIREBAR elements, also answer the need for liquid immersion applications requiring high kilowatts in small tanks. The FIREBAR element’s unique flat surface geometry packs more power in a smaller bundle, with lower watt density, making it especially well-suited for petroleum-based liquid heating applications.
- UL® and CSA component recognition
- ANSI and ANSI compatible 2, 2½, 3 thru 48 inch flanges
- All units are inspected and/or tested to ensure element-to-flange pressure seals do not leak
- Integrel thermowells provide convenient temperature sensor insertion and replacement without draining the fluid being heated
- Standard, general purpose terminal enclosure for easy access to wiring
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WATROD™ AND FIREBAR® SCREW PLUG IMMERSION HEATERS
IDEAL FOR DIRECT IMMERSION HEATING OF LIQUIDS
Screw plug immersion heaters are ideal for direct immersion heating of liquids, including all types of oils and heat transfer solutions.
Available in a variety of sizes, Watlow screw plug immersion heaters feature both WATROD round and FIREBAR flat tubular elements.
Heating elements are hairpin bent and either welded or brazed into the screw plug, depending on element sheath and plug material compatibility.
General purpose terminal enclosures are standard with optional moisture resistant, explosion resistant and explosion/moisture resistant enclosures available to meet specific application needs.
Optional thermostats provide convenient process temperature regulation to the screw plug immersion heater.
- UL® and CSA component recognition
- A variety of element sheath and screw plug materials to meet your application needs
- Integral thermowells provide convenient temperature sensor insertion and replacement without draining the fluid being heated
- Terminal enclosures provide ability to be rotated to simplify connection with existing conduits
- Welding or brazing WATROD and FIREBAR elements to the screw plug for a pressure tight seal
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WATROD™ ENCLOSURE HEATERS
PREVENT FREEZING AND CONDENSATION IN ELECTRICAL AND MECHANICAL HOUSINGS
WATROD enclosure heaters are designed to prevent freezing and condensation in electrical and mechanical housings. The WATROD heater element is enclosed in a perforated, aluminized-steel bracket to prevent direct contact with the heating element.
The enclosure heater’s stainless steel sheath wall resists corrosion and protects the heating coil from exposure while the silicone resin seal provides protection against humid storage conditions and is effective up to 390°F (200°C).
- Stainless steel sheath wall resists corrosion and protects the heating coil from exposure
- Silicone resin seal protects against humid storage conditions and is effective to 390°F (200°C)
- Perforated aluminized-steel mounting bracket eases installation and helps prevent direct contact with the heating element
- Stock straight projection Type B #10-32 screw lug terminals for easy electrical connection
- Made-to-order threaded stud provides quick connect and flexible lead wire termination options
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WATROD™ TUBULAR HEATERS
FITS VIRTUALLY ENTIRE RANGE OF IMMERSION AND AIR HEATING APPLICATIONS
Available in single- or double-ended termination styles, the versatile and economical WATROD tubular heating element from Watlow lends itself to virtually the entire range of immersion and air heating applications.
The single-ended WATROD tubular heater design has both terminals at one end. The opposite end is sealed. Flexible lead wires are 12 in. (305 mm) crimp connected to the terminal pin and have silicone-impregnated fiberglass oversleeves.
The double-ended WATROD, with its round cross-sectional geometry, are highly adaptable for bending—especially when bending is performed in the field. Watlow’s double-ended MULTICOIL tubular elements offer various combinations of resistor coils and thermocouples inside one sheath. They have the ability to sense the heater’s internal temperature accurately every time, or offer three-phase capability in one element.
Both single- and double-ended WATRODs share many construction features delivering long life—the resistance wire is centered in the heater sheath and electrically insulated with compacted, high-grade magnesium oxide for superior heating performance.
WATROD tubular heating elements have a variety of mounting and termination options making them highly popular among industrial customers.
- Single-ended: UL® and CSA component recognition to 240VAC
- Double-ended: UL® and CSA component recognition up to 600VAC
PRECISION WOUND NICKEL-CHROMIUM RESISTANCE WIRE
Distributes heat evenly to the sheath for optimum heater performanceSILICONE RESIN SEALS
Protects against moisture contamination and is rated to 221°F (105°C)MGO INSULATION FILLED SHEATH
Maximizes dielectric strength, heat transfer and lifeSTANDARD SHEATH MATERIALS
Steel, 304 and 316 stainless steel, alloy 800/840 and alloy 60053 STANDARD BEND FORMATIONS
Allows forming the heating element to the application. Spirals, compound bends and multi-axis and multi-plane configurationsSTAINLESS STEEL STUDS
Fusion welded to terminal pins for mechanical strength
