#44: Induction heater control
The induction heating process can be readily controlled by the temperature of the part as measured by an IRt/c non-contact infrared thermocouple. Several issues should be considered in an installation:
- The effect of the field on the IRt/c: since the measuring signal is electrically isolated from the housing, the IRt/c will operate in even a very strong field. The shield wire should be attached to a proper signal ground. If there is excessive heating from the field, consider using the cooling jacket kit, with the same water source as is used to cool the coil.
- The field-of-view: the preferred method is to view the part between the coil turns or from the end. Select the IRt/c model that best suits the requirements. For small gaps between coils, consider the focused models.
- Part temperature: IRt/c models can be used to measure target temperatures up to 2760°C (5000°F). Select the correct model for the control temperature desired.
- Part surface material: For bare metal parts the Lo E models are recommended. For coated or non-metal surfaces the Hi E models should be used.