How long is the oven on when you are noticing the temperature difference.
The tile are going to absorb heat for a long before the temp in the oven is
going to balance out.

Tim

"Peter Cook" > wrote in message
hlink.net...
> Anyone encounter this? My electric oven is lined with quarry tiles since I
> bake a lot of bread. I use a Taylor thermometer to measure the temp, and
> when the tiles are in the oven, the thermometer reads significantly lower
> than the oven's digital readout after preheating. At lower temperatures
> (300), the difference is about 60 degrees. At higher temperatures (475),
> it's about 25 degrees.
>
> When the tiles are removed, the readout and the thermometer are within 3
or
> 4 degrees. I keep the thermometer close to the oven's temperature sensor,
so
> they are measuring temperature at the same location in the oven.
>
> All readings are taken after the oven has preheated for at least 45
minutes.
>
> Obviously the heating characteristics of an oven change when there are
tiles
> involved. But why would they cause the thermometer and the oven's
> temperature sensor to behave differently? And most importantly -- which
one
> is right??
>
> Pete
>
>
>
>