How fast is "very quickly" and what's your budget? "Ambient air
temperature" and "quick-responding" are synonyms for "expensive".
What's the underlying purpose/task? (One time, more than once,
professional use, homeowner, etc., etc., ...??? )
Outfit I worked for previously (along w/ several others, of course)
have line of IR, but they really don't measure air temperature but
object temperature(s). Of course, if objects are in equilibrium, they
measure the same, but does the requirement for quick-responding come
from simply not wanting/able to wait for the reading or are
temperature(s) themselves changing? And, of course, they aren't
exactly cheap. There are similar instruments (along w/ humidity, etc.)
for HVAC installation/maintenance, but in general, the ambient air
measurement portion of them isn't all that fast, either.
If it's just seeing variation in room-to-room, probably
easiest/cheapest solution is several identical thermometers just placed
where you want them.
Keep in mind that "digital" is not synonymous with "accurate." I know
from my experience cooking that some digital thermometers are not very
useful because of their inaccuracy. Cost is not the only factor to
consider, but there does tend to be a correlation between higher price
I agree, but the OP said "quickly". When I want to check what my heat or AC
are doing, I use a glass & liquid thermometer that usually lives in the
garden. It's not markers in the glass that enable me to see the highest &
lowest temps achieved since the thermometer was put in place. Who knows if
that's 100% accurate, but there are no batteries to wonder about, either.
On Tue, 24 Oct 2006 17:59:08 GMT, "JoeSpareBedroom"
I just bought for 13 dollar at Lowes a small digital thermometer with
a remote sender for outside (which I also put in the basement and will
put in the attic. Claims to show temp to a tenth of a degree.
The inside temp reads about 5 degrees high. And the outside doesn't
say anytyhing when it is below 40 or so. The latter may be within
spec. I don't mind that the inside temp is wrong. I will calibrate
it with a good thermometer. Mostly I want to find out how hot it is
in the attic next summer, after all the conversations we had here.
Of course it doesn't change right away. The sensor is under the
cover, for one thing. But that means a breeze won't confuse it. I
think 3 or 4 minutes were enough, but it could have been mroe.
Harbor Freight has one like this, except the remote also displays the
temp on it. and the base thermometer shows current, and min and max
with the push of a button, and reset. But it's big and ugly.
I don't know to what purpose you're planning on using this, but my
local utility company (the City) gives away little thermometers that
you can stick on a wall. They're similar to the little plastic forehead
thermometers you see in first aid kits.
You could probably get a few of those and just leave them in an
inconspicuous place in the room and glance at it as you go by.
Something similar to this: http://www.extra-mile.com/color/fever.htm
but mounted on a cardboard the size of a business card and calibrated
for household temperatures (50 to 90 degrees, I think)
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