Auto Tune

The Fuji PXR-3 temperature has a feature that automatically sets the temperature control parameters. An individual could do this manually but would require substantial knowledge about the inner workings of digital temperature control.

To use, the kiln is turned on high with a setpoint of say 500 degrees F. In my case, the kiln was kept at 500 F for 30 plus minutes to stabilize the temperature. (note: it may be better to use a higher setpoint for ceramics - perhaps 1500 F).

AT (auto tune) is selected on the controller menu. Of course, AT when displayed on a seven segmentFuji controller with auto tune setting at Alaska Handmade Jewelry display looks like Ar. A little confusing, but with the manual handy it is an easy transition.

When AT is selected, a choice is provided to enter a 0, 1 or 2 for a function selection. Zero is off with one for auto tune start. Start AT and a right most decimal point will blink. This indicates the kiln is being setup for its proper control parameters.

The Fuji controller will turn the kiln on and off to determine temperature rise, fall, etc. All of this information is stored in the unit. As an example, the values for proportional band, integral time, derivative action time are automatically set. These values can be overridden with other values, if desired.

It is easy to setup the Fuji. And for sixty-four dollars it is a wise first investment in a simple but effective kiln temperature controller.