[volt-nuts] Thermal EMF - more results

[acbern at gmx.de]

so far so good.
but what do we learn from this? the solder alloy is essentially irrelevant
 


> Gesendet: Mittwoch, 06. Juli 2016 um 15:42 Uhr
> Von: "Herbert Poetzl" <herbert at 13thfloor.at>
> An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
> Betreff: Re: [volt-nuts] Thermal EMF - more results
>
> On Sun, Jul 03, 2016 at 12:33:04PM +0200, Andrea Baldoni wrote:
> > Hello.
> > I repeated the experiment with a better setup, I also added
> > some alloys that are already arrived. So far, a really "low"
> > EMF solder hasn't been identified.
> 
> > Measurements have been done between water ice point and boiling
> > point with Agilent 34401A. I don't expect the curves be linear,
> > but here it's assumed they are.
> 
> > Copper - Sn96.5/Ag3/Cu0.5 -> 3.35uV/K
> > Copper - Sn95.5/Ag3.8/Cu0.7 -> 3.22uV/K
> > Copper - Sn60/Pb40 -> 3.34uV/K
> > Copper - Pb92.5/Sn5/Ag2.5 -> 3.02uV/K
> 
> > Copper - Brass -> 3.30uV/K
> 
> > I am waiting for Sn96/Ag4, Sn99/Cu1.
> 
> Any plans on testing Sn42/Bi57.6/Ag0.4 ?
> 
> Thanks,
> Herbert
> 
> > Best regards,
> >  Andrea Baldoni
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