AutoFire® Kiln Controller User’s Guide
2
Pyrometric cones and their use is explained fully in Appendix B, while a Temperature Equivalent chart is
included in Appendix C.
AutoFire KILN CONTROLLER MODELS
The Orton AutoFire® family of kiln controllers includes four models to meet most users’ needs.
The features unique to each model is given below:
AutoFire® Plus
Control With a Single Type K, N, or S Thermocouple
Power Output to Mechanical Relay(s) for Heating Element Control
Power Output to a Mechanical Relay for Vent Fan Control (option)
AutoFire® Pro
Control With a Single Type K, N, or S Thermocouple
Power Output to Solid State Relay for Heating Element Control
Power Output to a Mechanical Relay for Safety Shut-off
Power Output to a Mechanical Relay for Vent Fan Control (option)
AutoFire® UniTemp™
Proprietary Algorithm Minimizes Temperature Gradients
Control With 2 Type K, N, or S Thermocouples
Power Output to Mechanical Relays for Heating Elements
Control of Up to 3 Independent Heating Zones
Power Output to a Mechanical Relay for Vent Fan Control (option)
AutoFire® UniTemp™ - Solid State Relay Option
Proprietary Algorithm Minimizes Temperature Gradients
Control With 2 Type K, N, or S Thermocouples
Power Output to Solid State Relays for Heating Elements
Control of Up to 3 Independent Heating Zones
Power Output to a Mechanical Relay for Safety Shut Off
The AutoFire® Plus/Pro models referred to in this User’s Guide are those listed above. References to
AutoFire® UniTemp™ refer to both the AutoFire® UniTemp™ and the AutoFire® UniTemp™ Solid State
Relay Option models listed above.
Using AutoFire® with a Kiln-Sitter
If you have a Kiln-Sitter on the kiln, you may use a Cone 10 bar or cone under the sensing rod to shut off
power if the kiln reaches high temperatures. This bar will last many firings. You can also remove the cone or
bar and prop up the sensing rod with a piece of refractory material. Set the Kiln-Sitter timer for two hours
longer than the firing.
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