Low Density Cartridge Heater Specifications and Tolerances
Performance Ratings
Maximum Temperature: 1200°F (650°C)
Maximum Watt Density: 20-45 W/in2 (3.1-7.0 W/cm2) depending on heater size and operating temperature.
Dimensional Specifications
| Nominal Diameter | 3/16 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 | 15/16 | 1 | 1-1/4 |
|---|---|---|---|---|---|---|---|---|---|---|
| Actual Diameter – in. | 0.185 | 0.247 | 0.372 | 0.496 | 0.621 | 0.745 | 0.870 | 0.933 | 0.995 | 1.250 |
| Actual Diameter – (mm) | (4.70) | (6.27) | (9.45) | (12.60) | (15.77) | (18.92) | (22.10) | (23.70) | (25.27) | (31.75) |
| Diameter Tolerance | ±.002 (0.051 mm) | ±.003 (0.076 mm) | ±.005 (0.127 mm) | |||||||
| Length Tolerance | ±1/16 (1.59 mm) up to 6″ (152.4 mm) long; ±1/8″ (3.18 mm) over 6″ long | |||||||||
| Camber Tolerance Heaters up to 8″ (203 mm) long | .005″ (0.127 mm) | |||||||||
| Camber Tolerance Heaters over 8″ (203 mm) long | 0.010″ (0.254 mm) per foot of length (0.010 x (length in feet)2) | |||||||||
Electrical Specifications
| Nominal Diameter | 3/16 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 | 15/16 | 1 | 1-1/4 |
|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Voltage | 240 | 240 | 240 | 240 | 480* | 480* | 480* | 480* | 480* | 480* |
| Maximum Amperage | 1.5 | 3.5 | 6 | 8 | 10 | 15 | 15 | 15 | 25 | 30 |
| Maximum Wattage | Consult Tempco | |||||||||
| Wattage Tolerance | Plus 5%, Minus 10% | |||||||||
| Resistance Tolerance | Plus 10%, Minus 5% | |||||||||
*480V when applicable. Consult Tempco.
