[volt-nuts] Best way to measure micro Ohms

[Dr. David Kirkby (Kirkby Microwave Ltd)]

On 17 September 2017 at 21:58, Mitch Van Ochten <
Mitch at vincentelectronics.com> wrote:

> The Keithley 2002 uses DC but automatically takes a reading of any offset
> voltage and subtracts it (offset compensation).  Rated accuracy on the 20
> ohm range (2 years) is +/- 26 ppm, and with 10 averages it has a resolution
> of 0.1 microohms.
>
>
> Best regards,
>
> mitch
>

Also very pricy!

I've made an offer on a Keithley 580 micro ohm meter, and ordered a couple
of $3 audio amplifier boards. I will try one with the lock-in amplifier. It
it does not work, or works poorly, it will not have broken the bank.

Dave