Hi Daniel,

What about simply making or buying a very accurate current source (for
say 10 amps) and then using a regular multimeter to measure the
voltage across the shunt? It would be 1mV at 10 amps. You could even
go higher in current if needed to get a large enough signal.

I've used this technique in the past to measure low resistance values.

Sean


On 1/16/07, Daniel Schouten <d.schouten@quicknet.nl> wrote:
> Hi all,
>
> I am looking for an instrument to accurately measure a resistance of 100
> uOhms. This instrument will be used in a setup to trim large current
> shunts from 100uOhms -5% to 100 uOhms - 0.25%. Budget is < 2k USD. I have
> seen several options (Agilent, Keithley), but most are too expensive or too
> versatile (I only need to measure low Ohmic values).
>
> Are there any relativily simple but accurate instruments on the market to
> perform this task? I have also heard of building a Wheatstone bridge, but
> this sounds a little bit too experimental for me. The measurements must be
> taken reliably and some volume trimming of shunts might also be involved in
> the near future.
>
> Thanks!
>
> Daniel...
>
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