digital thermometer - cheap small fast wide range?

[wle]

is there such a thing as
a digital thermometer - that is cheap small fast and wide range?

what would be perfect is a regular medical type -
if it would ONLY read from 0F to 200F.

is there such a thing?

specs:

cost:
< $20

dimensions:
long form factor : up to ball-point pen size,
or short form factor: diameter of a quarter, 3/8 thick

accuracy:
+/- 2F

range:
-40F to 300F nice
0F to 140F necessary

speed:
reads air temp within 10 sec
this is the least important spec, it can take up to 60 sec
if everything else is within specs.

also i would like it to be on all the time, not have to press
a button.

battery life should be one year or more.


wle.

 

[Robert Baer]

is there such a thing as
a digital thermometer - that is cheap small fast and wide range?

what would be perfect is a regular medical type -
if it would ONLY read from 0F to 200F.

is there such a thing?

specs:

cost:
< $20

dimensions:
long form factor : up to ball-point pen size,
or short form factor: diameter of a quarter, 3/8 thick

accuracy:
+/- 2F

range:
-40F to 300F nice
0F to 140F necessary

speed:
reads air temp within 10 sec
this is the least important spec, it can take up to 60 sec
if everything else is within specs.

also i would like it to be on all the time, not have to press
a button.

battery life should be one year or more.


wle.

National semiconductor makes ICs, one calibrated in Centigrade, one
in Farenheit; both are capable of erpeatable and accurate measurements
to 185C.

 

[James T. White]

is there such a thing as
a digital thermometer - that is cheap small fast and wide range?

I don't know if it meets all your specs but have you considered an electronic
cooking/meat thermometer from your local grocery store? The one I have reads
from -45C to +200C, cost about $15 and has a 4.5" stainless steel probe. The
trademark is Good Cook.

Hope this helps.

 

[wle]

oh yeah!
thanks.

wle.