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Old 12-29-2012, 05:57 AM   #1
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How much of an instant-read thermometer reads temperature?

I've always had doubt about knowing how much of my instant-read thermometer actually reads the temperature of what I'm cooking. For example, if the probe is 5" long, how much of that length is actually affecting the reading? For instance, if I'm cooking a filet and want an absolutely perfect internal temperature of 130 degrees at the center, and I over-penetrate the tip of the thermometer by a couple centimeters, am I compromising a proper reading on the center? Or, by contrast, if the entire 5" affects the reading, then putting the tip of the probe into the very center isn't accurate because the part of the probe that's not in the center of the filet is exposed outside the very center, thus changing the reading and doneness.

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Old 12-29-2012, 07:56 AM   #2
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Try just sticking the tip into boiling water.
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Old 12-29-2012, 08:01 AM   #3
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And conversely, get a room temp reading with the thermometer, then hold a heat source behind the tip and see if it influences the reading. I'm thinking it should, since SS is a conductor.
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Old 12-29-2012, 09:57 AM   #4
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Typically, a few centimeters of the tip are what's important.

Testing the probe as described is a good idea.
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Old 12-29-2012, 10:23 AM   #5
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You can also test it by putting it in ice water.
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Old 12-29-2012, 02:00 PM   #6
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Only the tip portion should give you the correct temp.
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Old 01-03-2013, 05:51 PM   #7
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Quote:
Originally Posted by roadfix View Post
Only the tip portion should give you the correct temp.
+1
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Old 01-03-2013, 07:32 PM   #8
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The bottom of the thermometer has a 2 inch coil (Taylor)
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Old 01-04-2013, 11:55 AM   #9
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If you notice the indentation, 2" up from the tip, thats where the coil spring is located. This is where the temp is read.
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Old 01-12-2013, 03:03 PM   #10
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Originally Posted by salt and pepper View Post
If you notice the indentation, 2" up from the tip, thats where the coil spring is located. This is where the temp is read.
Yeah, but those are not instant read thermometers.
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