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High-Density Cartridge Heater with Integrated Thermocouple
Achieve unparalleled thermal precision with our high-density cartridge heaters featuring a factory-integrated thermocouple. This all-in-one design ensures accurate temperature feedback directly from the heat source, eliminating lag and improving process control for demanding applications.
Product Details
| Diameter Tolerance | +0.000″, -0.002″ |
| Watt Density | Up to 260 W/in² (40 W/cm²) |
| Max Sheath Temperature | 1400°F (760°C) |
| Sheath Material | Stainless Steel 304, 316, Incoloy® 800 |
| Lead Wire | Fiberglass insulated, 840°F (450°C) continuous rating |
| Thermocouple Accuracy | Standard Limits of Error (ASTM E230) |
Specifications are typical. Final values depend on configuration and tolerances requested.
Our high-watt density cartridge heaters are engineered for exceptional performance and longevity. Constructed with a high-purity magnesium oxide (MgO) core and a rugged stainless steel sheath, they provide superior heat transfer and dielectric strength. The resistance wire is precisely wound to ensure uniform heat distribution across the entire length of the heater.
The key feature of this model is the integrated thermocouple, positioned at the tip of the heater for the most accurate temperature measurement possible. This eliminates the need for a separate sensor and complex wiring, simplifying installation and improving the responsiveness of your thermal system. Ideal for applications requiring tight temperature control, such as plastic molding, medical devices, and aerospace components.
- Superior Heat Transfer: Swaged construction leads to high thermal conductivity and rapid temperature response.
- Integrated Sensing: Type J or K thermocouple provides immediate and accurate temperature feedback.
- Durable Construction: Incoloy/Stainless Steel sheath resists corrosion and high temperatures.
- Customizable: Available in a wide range of diameters, lengths, wattages, and lead configurations to meet your exact needs.
These versatile heaters are used across numerous industries where precise, reliable heat is critical:
- Plastic Injection Molds & Dies
- Hot Runner Nozzles
- 3D Printers & Additive Manufacturing
- Packaging and Sealing Bars
- Medical and Analytical Devices
- Aerospace & Defense
- Food Service Equipment
- Semiconductor Manufacturing
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FAQ
There are several key benefits:
Improved Accuracy: The sensor measures temperature directly at the source, eliminating the thermal lag that can occur with external sensors. This leads to much tighter and more accurate temperature control.
Simplified Installation: You don't need to drill a separate hole for a sensor or manage extra wiring. This saves space, reduces complexity, and lowers installation time.
Enhanced Heater Protection: By providing real-time temperature feedback, the integrated sensor helps prevent the heater from overheating, which can extend its operational life.
Faster Response Time: The close proximity of the sensor to the heating element allows your control system to react instantly to temperature changes, improving the efficiency and consistency of your process.
Type J and Type K are different standards of thermocouples, each made from different alloys.
Type J (Iron-Constantan): Generally used for lower temperature ranges, typically up to about 1400°F (760°C). They are very common and cost-effective for a wide range of applications.
Type K (Chromel-Alumel): Suitable for higher temperature ranges, often up to 2300°F (1260°C). They are the most common general-purpose thermocouple, known for their wide temperature range and durability.
The best choice depends on the maximum operating temperature of your application.
Choosing the correct wattage is crucial to avoid premature failure. You need just enough wattage to heat your material to the desired temperature within a specific time and maintain it, accounting for heat loss. A "watt density" (watts per square inch) calculation is often used. Too high a watt density can cause the heater to burn out quickly. If you're unsure, it's always best to consult with a thermal engineer or use an online calculator.
A tight fit is critical for performance and lifespan. Cartridge heaters transfer heat primarily through conduction. Any air gap between the heater sheath and the surrounding material acts as an insulator, trapping heat within the heater. This forces the internal temperature to rise dramatically to push the heat out, leading to rapid degradation and failure. For best results, the hole should be no more than 0.002" to 0.004" larger than the heater's diameter.
Yes, while they are designed for industrial use, their precision and compact size make them suitable for various applications, including:
3D printers and additive manufacturing
Medical and laboratory equipment
Food service appliances (sealing bars, hot plates)
Aerospace component testing
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Contact Us
Thank you for your interest in our cartridge heaters!
Whether you’d like to learn more about product specifications, request a custom solution, or request a quote, we’re happy to assist you.
Reach us through
- +86 15996326879
- sale@elekheat.com
- 8:30 AM - 18:00 PM
