Ether boils at 94.28 degrees F. At that point it would become a gas. If the
blub is under filled, the void would be occupied by gas. Would not gas
compress differently than liquid thus causing the gauge to read incorrectly
(low) if the ether vaporized inside of the blub and line?
John Spaur
-----Original Message-----
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Oudesluys
Sent: Sunday, July 6, 2014 1:10 AM
To: healeys@autox.team.net
Subject: Re: [Healeys] Safety gauge - resolved
The amount of ether in the bulb is not very critical. Any fluid has a
specified vapour pressure at a specified temperature. This is what the gauge
registers, it is a manometer that translates pressure to temperature on the
scale.
As vapour pressure is independent from volume the amount of fluid does not
matter, as long as the bulb and capillary is not completely filled up with
fluid or if there is no fluid but just vapour.
Apparently there are several sorts of ether I was told by a chemist. He
supplied me with some that is normally used in automotive gauges which I
used for repairing a gauge.
Kees Oudesluijs
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