Dave Finkelnburg on mon 5 aug 02
Brian,
Edouard's engineer friend has it right. The indicated temperature from
the thermocouple will become inaccurate over time, even if protected inside
a ceramic sheath. That sheath, usually called a thermowell, is commonly
used in industrial settings to reduce the rate of deterioration of a
thermocouple -- it makes the thermocouple last longer, but it still won't
last forever. Sorry. :-(
Dave Finkelnburg in Idaho
----- Original Message -----
From: "Edouard Bastarache"
this statement comes from André Rajotte, engineer in physics.
----- Original Message -----
From: Brian Molanphy
Edouard wrote:
'Any thermocouple will become inaccurate over time because, as for
kiln elements, each firing cause the deposition of a microscopic coat
of oxidized material on the wires the thermocouple is made up of, and
makes it less efficient.'
edouard, what if the thermocouple is protected by a ceramic (refractory)
sheath?
-brian
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