[time-nuts] OT, looking for a good science forum
Paul Amaranth
Paul at Auroragrp.Com
Sat Jan 26 14:29:21 EST 2013
> Message: 4
> Date: Sat, 26 Jan 2013 16:28:19 +0100
> From: Fabio Eboli <FabioEb at quipo.it>
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Subject: Re: [time-nuts] OT, looking for a good science forum
> Message-ID: <5ef3f142b075fcab38182666a4e5073b at quipo.it>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Il 2013-01-26 14:58 Bob Camp ha scritto:
> > Hi
> >
> > Platinum RTD's are a pretty good bet for -80C, they hold up well down
> > there. For calibration, ammonia and acetylene both have triple points
> > in the vicinity. I'd probably try ammonia first, but not for any good
>
> Doesn't acetylene have a bad habit of dissociate when pure liquid?
>
> Fabio.
>
Yes, it's normally stored disolved in acetone. It also spontaneously dissociates
if pressures exceed 15 psig or 30 psi absolute. That could put a real damper on your day.
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul at AuroraGrp.Com | Unix & Windows
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