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Heating elements

Ultramic Heaters

Ultramic Heaters

Watlow ULTRAMIC® heaters are designed for thermal applications requiring high performance to ensure optimal operation. Depending on the application, heater design, and process parameters, ultra-fast ramp rates of up to 150°C per second can be achieved. In addition to excellent thermal properties, this type of heater exhibits very low leakage currents compared to conventional metallic elements.

Key Features

  • Ultra-fast ramp rates of 150°C per second

  • High available watt densities

  • Low leakage currents

  • Versions available with a maximum operating temperature of 600°C

  • Available with integrated thermocouple

Characteristics

High thermal conductivity: Thermal conductivity is comparable to aluminum, enabling rapid heat dissipation. This allows ULTRAMIC heaters to be designed with high watt densities and achieve ramp rates of 150°C per second.

Clean, non-contaminating material: Using a high-temperature sintering process and carefully controlled microstructure, an extremely hardened element is manufactured (1,100 kg/mm²). With a theoretical density of 99%, the heater has virtually no porosity. Aluminum nitride (AlN) is an ideal choice for applications requiring a “clean” heater.

Moisture resistance: Aluminum nitride is insensitive to moisture, unlike many hygroscopic materials used in conventional heating elements.

High dielectric strength and insulation resistance: Aluminum nitride (AlN) is an electrical insulator with very low leakage current (<10 μA @ 500 VAC), a preferred feature for many applications.