cartridge heater is an electric heating element that is typically cylindrical in shape and is used to provide localized heat in industrial and commercial applications. It is made of a resistive heating element, such as a Nichrome wire, that is embedded in a metal sheath.
| Resistance heating wire |
NiCr 80/20 wire |
| Wattage Tolerance |
+5%, -10% |
| Resistance tolerance |
+10%, -5% |
| Length tolerance |
±1 mm |
| Diameter tolerance |
-0.02mm |
| Standard Cold Zone |
5-10mm |
| Insulation resistance (cold) |
≥ 500 MΩ |
| Maximum leakage current (cold) |
≤ 0.5 mA |
| Thermocouple Location |
type J / K / Ground wire |
Advantages
internal wiring: high temperature resistance, uniform heating, high thermal conductivity and difficult cable fracture.
external wiring: high temperature resistance, uniform heating and high thermal conductivity.
Function:
1. Operating conditions: ambient temperature-20ºC ~ + 60ºC, relative temperature <80%;
2. Electrical strength: cold withstand voltage AC work 1500V 50Hz lasts for 1 min without breakdown phenomenon;
3. Thermal insulation performance: AC 1000V 50Hz lasts for 1 min without breakdown phenomenon;
4. Leakage current <0.5MA; Insulation resistance> 30MΩ;
When electric current is passed through the resistive heating element, it heats up and transfers heat to the metal sheath. The metal sheath then conducts the heat to the surrounding environment, providing localized heat in the area where the cartridge heater is installed.
Cartridge heaters are often used in applications such as plastic injection molding, hot stamping, and packaging equipment, where precise and consistent heating is required. They can also be used in laboratory and medical equipment, where precise temperature control is critical.
One advantage of cartridge heaters is their high heating capacity in a small size, which allows them to be easily installed in tight spaces. They are also highly customizable, with a variety of options for size, wattage, voltage, and other specifications.
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