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Inspecting the Thermocouple of a Digital Kiln

Digital kilns use a thermocouple to measure the temperature inside the kiln. The thermocouple is the small rod protruding into the firing chamber.

Bumping the thermocouple can push it out of the firing chamber. This could cause an overfire. The controller does not contain an alarm to detect this type of failure. Bumping the thermocouple could also cause it to give inaccurate readings.

Thermocouples come in different widths. The wider the thermocouple, the farther it should extend into the firing chamber. A 1/2" - 1/4" diameter thermocouple should extend into the firing chamber about 1”. A 1/8” thermocouple should extend into the chamber 1/2” – 5/8”. (Do not be concerned if your thermocouple extends into the firing chamber even farther.)

Keep shelves, posts and ware 1” - 1 1/2” away from the thermocouple. If these items are too close, they can temporarily throw the temperature reading off. Keep an extra thermocouple on hand, especially if you fire hotter than 2000°F/1093°C.

Just a reminder: We have loaded a new publication to www.paragonweb.com: "Trouble Shooter for the Sentry Controller." You can download it from the following link:

http://www.paragonweb.com/catalog.cfm?type=manuals&startrow=61

Or go to www.paragonweb.com and click on "Manuals" at the top of the page. Then scroll through the manual titles. Please be patient when downloading. The trouble shooter is 16 pages and takes awhile if you have a dial-up connection.

Wishing you a great fall season,

Sincerely,

Arnold Howard Paragon Industries, L.P. 2011 South Town East Blvd. Mesquite, TX 75149-1122 972-288-7557 / 800-876-4328 Fax: 972-222-0646 arnoldhoward@att.net / www.paragonweb.com



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