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Re: Does anyone have an Agilent 16452A Liquid Test Fixture?

 

On Fri, 22 Oct 2021 at 20:00, Askild <megafluffy@...> wrote:
Hi David,

We have one of these at work.
What info would you like to have? I can, when I get the time, take some pictures and do some measurements.
But as this is a costly piece, and we still use it, I will not take it apart more than normal use.
Hi,
Can you determine how the electrodes are fixed into the outer case? I understand that there's one electrode on each side. The electrodes must be electrically isolated from the main body, so I assume they sit on? the ceramic insulator. But what holds them to the ceramic? What holds the ceramic in the case? I'm trying to work out all 3 of these conditions can be simultaneously satisfied.

1) Wires connect the electrode to the SMA connectors.
2) Electrode attached on an insulator
3) Insulator attached to the body.

Apart from using an adhesive, which I doubt is used, I can't see how everything can be fixed in place.

One other thing. There's an O-ring. Why not two, given there's a spacer? I would have thought there was a potential for leaks both sides of the spacer, so two o-rings would be needed.

Dave

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