| Part No. | Description |
| EX101 | Extrel heater Assembly |
| EX101P | Extrel ELQ400 heated Wire in Parallel |
This source heater assembly is constructed from two heater cartridges (30V, 30W, 1 1/4in long, 1/8in diameter). Complete as shown with ceramic insulators and connectors. Replacement cartridge heater CIEX17A available separately.