[volt-nuts] Best way to measure micro Ohms
Dr. David Kirkby (Kirkby Microwave Ltd)
drkirkby at kirkbymicrowave.co.uk
Sun Sep 17 18:08:59 EDT 2017
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,
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.
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