Hi-Density Miniature Cartridge Heater Specifications and Tolerances
Performance Ratings
Maximum Temperature: 1200°F (649°C)
Maximum Watt Density: 100-200 W/in2 (15.5-31 W/cm2) depending on operating temperature.
Sheath Material
Standard: Type 304 Stainless Steel
Optional (1/8 in Heaters Only): Inconel 600
The maximum operating temperature and the life expectancy of a cartridge heater is dependent on two main factors:
1. The maximum recommended sheath temperature
2. The maximum ambient temperature for the termination selected
Consult Tempco if you require a recommendation for your application.
Dimensional Specifications
| Nominal Diameter | 1/8″ | 5/32″ | 3/16″ | |||
|---|---|---|---|---|---|---|
| in | (mm) | in | (mm) | in | (mm) | |
| Actual Diameter | 0.122 | 3.10 | 0.153 | 3.89 | 0.184 | 4.67 |
| Diameter Tolerance | ±.002 (-0.051) | |||||
| Minimum Length | 1.25 (31.8) | |||||
| Maximum Length | 12 (305) | |||||
| Length Tolerance Heaters up to 3.5″ (89 mm) long | ±3/32 (2.4) | |||||
| Length Tolerance Heaters over 3.5″ (89 mm) long | ±3% of Sheath Length | |||||
Electrical Ratings
| Nominal Diameter | 1/8″ | 5/32″ | 3/16″ |
|---|---|---|---|
| Maximum Voltage | 240 | ||
| Maximum Amperage | 3.0 | ||
| Maximum Wattage at 120V | 360 | ||
| Maximum Wattage at 240V | 720 | ||
| Wattage Tolerance | +10,-15% | ||
| Resistance Tolerance | +15,-10% | ||
