High Power Cartridge Heater Factory

Frequently Asked Questions

• Q: What is the difference between a standard and a high-power cartridge heater?

• A: The main difference is the watt density. High-power heaters are built to withstand much higher heat flux per unit area, allowing for faster heat-up in applications with high thermal loads.

• Q: Why is Incoloy the recommended sheath material for high-power heaters?

• A: Incoloy retains its strength at high temperatures better than stainless steel, which is crucial for preventing the sheath from deforming under the extreme internal pressures of a high-wattage heater.

• Q: How can I maximize the life of a high-power cartridge heater?

• A: Ensure a perfect fit in the hole (no gaps), use a good thermal conductive paste, and provide adequate temperature control to prevent large temperature swings and overheating.

• Q: What kind of lead wire protection do you recommend?

• A: For high-temperature zones, we recommend high-temperature fiberglass leads with a flexible stainless steel braid or conduit to protect against abrasion and accidental contact.

• Q: Can you make a high-power heater with a built-in thermocouple?

• A: Yes, we can integrate a thermocouple into the heater tip. This provides the fastest and most accurate temperature reading from the hottest part of the heater.

• Q: What is the tolerance on the diameter of your cartridge heaters?

• A: We offer standard tolerances of -0.000 / +0.010 inches. For high-pressure applications, we can provide tighter tolerances to ensure a press-fit installation.

• Q: Are these heaters suitable for use in water?

• A: Yes, as long as the sheath is sealed where the leads exit. We can provide heaters with sealed lead exits and epoxy-sealed terminations for immersion applications.

• Q: Do you offer different heating zone configurations?

• A: Yes, we can manufacture cartridge heaters with dual or multiple zones, each with a different wattage, to create a custom heat profile along the length of the heater.