Art Todesco wrote in
:

Bob wrote:
you do know that heat comes out of the thermostat. so putting a
thermometer on top will not give accurate reading.
my bad, dumb question. obviously you dont or u wouldn't put it on
top.

"allanc" wrote in message

...
A friend installed a Honeywell 5+2 Digital Thermostat last weekend.
The inside temperature reads 68 and I am trying to check its
accuracy. I compared it to two free standing digital thermometers
which I balanced on top of the thermostat (at the same time).
The thermometers readings range from 69 and 71; to 71 and 71.
Any suggestions on determining the *right* temperature are
appreciated.

Thank you in advance.

That's a good point. Another would be
that various electronic units have
different
thermal mass, i.e. they take longer or
shorter times to warm up or cool down. For
instant reading a small thermocouple
will give the fastest response .... but
don't stand
close to it or it will be reading heat
radiating from your body.


most electronic thermostats use thermistors.
about the size of a small seed.

--
Jim Yanik
jyanik
at
kua.net