WATLOW Ceramic Fiber Heaters


Watlow leads the industry in developing high-temperature heating technologies and products in various sizes and constructions to fit a broad range of processes and applications. Watlow’s MULTICELL™, FIREROD®, tubular and ceramic fiber heaters offer capabilities such as ultra-fast ramp rates, precise temperature uniformity and high temperatures for applications requiring low thermal mass. Heaters are sized and designed to accommodate small to large applications and various environmental conditions.

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Product Description

Product Description

The versatile Watlow coil/cable heater can be formed into a variety of shapes. 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.Cable heaters are small diameter, high-performance units, fully annealed and readily bent to a multitude of configurations.

The cable heater can be formed into a compact, coiled nozzle heater supplying a full 360 degrees of heat with optional distributed wattage. A straight cable heater can snake through an equipment application. Flat spiral configurations can be used in high-tech manufacturing while a star wound cable can be used for air and gas heating.

Different applications require different construction methods, including one, two or four resistance wires; parallel coil or straight wire; drawn or swaged sheaths; with or without internal thermocouples; leads exiting from one or both ends, and round, rectangular or square cable cross sectionals.

Whatever the application, the Watlow coil heater and cable heater can be shaped to fit.

Specification

Specification

Material Maximum Operating Temperatures Maximum Watt Densities
°F °C W/in2 W/cm2
Ceramic Fiber 2200 1204 30 4.6
  • Uses “radiant” heat transfer exclusively
  • Operating temperatures up to 2200°F (1204°C)
  • Watt densities from 5 up to 30 W/in² (0.8 to 4.6 W/cm²)
    • Applications

    Applications

  • Plastic injection molding nozzles
  • Semicond
  • High-temperature furnaces
  • Metal melting, holding and transfer
  • Semiconductor processing
  • Glass, ceramic and wire processing
  • Analytical instrumentation

    • uctor manufacturing and wafer processing

  • Hot metal forming dies and punches
  • Sealing and cutting bars
  • Medical, analytical and scientific instruments
  • Restaurant and food processing equipment
  • Cast-in heaters
  • Laminating and printing presses
  • Air heating
  • Textile manufacturing
  • Heating in a vacuum environment
    • Features & Benefits

    Features & Benefits

    Features Benefits
    High temperature ICA resistance elements
  • Bounds integrally into required position
  • Allows five element configurations
    		•
    Lightweight, low-density alumina-silica composition molded into shape
  • Acts as an insulation to isolate the heating chamber from the outside
  • Provides low shrinkage fiber and inorganic binder
  • 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 of 10 to 15 lb/ft³ (160 to 240 kg/m³)
  • Allows the heater to reach process temperature quickly
  • Allows the energy to heat the load instead of wasting energy on itself
    		•
    Works directly off common power line voltages
  • Eliminates the need for expensive transformers or complex power control systems
  • Allows compatibility with the full range of Watlow temperature controllers and power switching devices
    		•
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