<Daniel Kolizev> wrote:
| Which off-the-shelf electronic pressure sensor component (part number) would
| be used to measure altitude of a baloon starting its journey from sea level
| (0 meter) to 15000 feet (4,572 meter) ?
Well, this doesn't exactly answer your question as asked, but it might
(or might not) be more useful than actually answering your question.
(Which others have done anyways.) And you did ask in
rec.models.rc.air, so I'll answer in that context ...
If you're looking to record the altitude over time, and want it small,
accurate and relatively cheap, get the RAM2 at
http://home.epix.net/~rcbrust /. It costs about $100 and will record 9
hours of altimeter data at one data point/second with a resolution of
about one foot. And it only weighs 7.5 grams.
If you're looking to know how high your balloon is and want this
transmitted in real time, you may want a variometer. There's several
to choose from, but the Picolario at http://www.picolario-usa.com/ is
a popular one. Alas, it costs just short of $400. (But there are
other options that are cheaper, but have fewer options.) I don't know
if these would have 15,000 feet of range, however -- though you might
be able to use a scanner and a highly directional antenna to increase
Another option is the Flight Data Recorder at
http://www.eagletreesystems.com /, and it can both transmit and record
information, and can keep even more information than just altitude.
It also has a GPS option that might be useful.
Note that these altimeters give altitude data that is a good deal more
accurate than a GPS. You may or may not care, but the difference is
Of course, if you want something that you can tie into something else
on the balloon, then none of these are likely to be what you want, but
you might find them useful as a starting point of something you
Doug McLaren, email@example.com / is the root of all directories.