Bob Axtell wrote:
> The most reliable high temperature work is being done by oil field
> "downhole" instrument makers, who have to contend with 100C
> constantly.

If only it were that cold, my life would be a lot easier :-)

All of our downhole equipment is rated to spend its life at 150C or 175C,
some up to 200C, and we're looking at even higher temperatures for one
application.  And these aren't survey tools which only have to survive a
few hours- they go on the end of pumps and are expected to last a few
years.

Typical temperatures are 120-150C at the bottom of a downhole oil pump, so
it really needs to work at that temperature, it's not just a number for the
spec sheet!

As you can probably imagine, there are a _lot_ of issues to deal with!

Nigel
--
Nigel Orr, Design Engineer                 nigel@axoninstruments.co.uk
Axon Instruments Ltd., Wardes Road,Inverurie,Aberdeenshire,UK,AB51 3TT
               Tel:+44 1467 622332 Fax:+44 1467 625235
                   http://www.axoninstruments.co.uk

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