[time-nuts] Double ovened 10811-60158 on ebay
Thomas A. Frank
ka2cdk at cox.net
Sun Jul 20 11:02:50 EDT 2008
> The way to make a HP10811 immune to humidity is to seal it in a metal
> container with glass leadthrough seals
> after it has been flushed with dry nitrogen for a few days.
Or perhaps pump it down to a vacuum, hold for a couple of hours, then
fill with dry nitrogen?
Just don't power it during that time.
> Another method is to seal a small quantity of P2O5 in it as a
> humidity "getter". An added improvement is to wind
> two platinum wires on a P2O5 containing fibre glass pad, and
> electrolyse any water absorbed to oxygen and hydrogen gas
> after it is sealed.
Doesn't that pose a minor fire/explosion risk? As the H2 and O2 try
Tom Frank, KA2CDK
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