Using Cone Offset

Using a cone offset can be very useful when you want to help correct an over or underfiring. By setting a cone offset, you are able to raise or lower the final cone temperature by a maximum of 50°F (28°C). This allows you to change the heat work of a particular cone if the kiln appears to be firing too hot or too cold.

Important Considerations

There are a few important things to remember when using a cone offset:

• A cone offset is only for the selected cone, it does not affect other cone temperatures and will remain until it is set again.
• Thermocouple offsets and cone offsets have a similar effect, but the main difference is a thermocouple offset affects all temperature values, not just a single cone.
• New elements in a kiln will sometimes run hotter than worn elements, in which case a cone offset would be a good option to fix that.

Programming Instructions

To program your V6CF or RTC1000 for a cone offset:

1. Press the ENTER/START key for the RTC1000. Skip this step for the V6CF.
2. Then, press the MENU key until "CNOS" is displayed.
3. Press the ENTER key and CONE will alternately flash with a cone number.
4. Type in the desired cone number for the cone offset and press ENTER. Be aware there is a difference between a Cone 8 and Cone 08.
5. °F will alternately flash with the current offset for that cone.
   • To set a negative offset (decrease heat work), type 9,0, then degrees of offset, up to 50°F.
   • To set a positive offset (increase heat work), just type the degrees of offset, up to 50°F.
6. After entering the offset, press ENTER and the controller will return to IDLE.