[volt-nuts] Best way to measure micro Ohms

Todd Micallef tmicallef at gmail.com
Mon Sep 18 18:21:03 EDT 2017


It looks like IET updated the design of the instrument with better
switching. If you download the manual from the IET website, they still show
the older model.
I wonder if the newer model incorporates a front switch that enables the
pulsed mode that was added by the owner on EEVBlog? I can't tell by the


On Mon, Sep 18, 2017 at 5:44 PM, Dr. David Kirkby (Kirkby Microwave Ltd) <
drkirkby at kirkbymicrowave.co.uk> wrote:

> On 18 September 2017 at 18:36, Todd Micallef <tmicallef at gmail.com> wrote:
> > Dave,
> >
> > Another meter is the Cambridge LOM-510A. I am not sure if it is in your
> > budget but there has been a review made on EEVBlog. There is one
> currently
> > on eBay with a current amplifier that I have never seen before today. It
> > may be worth reviewing if it meets your needs.
> >
> > Todd
> >
> Hi Todd,
> Something struck me as odd about the *model* number LOM-510A.
> When I google the Keithley 580, I see a *paid advert* for an IET Labs
> LOM-510A.
> http://www.ietlabs.com/lom-510.html?gclid=CjwKEAjw3f3NBRDP_
> NHS9fq53n4SJACKIfEYZT_jyIk_TKn0gqEkzvfxwKASIpIZTcDFJfJlMwvnRRoCZYHw_wcB
> But it looks nothing like the Cambridge LOM-510A on eBay
> http://www.ebay.com/itm/Cambridge-510A-Micro-Ohmmeter-
> DLRO-Includes-NEW-leads-NIST-Calibrated-LOM-510A-/291956733548
> It seems a bit odd for two manufacturers (IET Labs and Cambridge
> Instruments) to both have the exact same model number (LOM-510A) for an
> instrument with identical functionality (micro ohms). Yet photographs of
> the two instruments show they look similar, but are not identical. The IET
> Labs one appears to have a couple of extra switches.
> Just to make something appear even more odd, the IET Labs has a link to a
> review on EEVblog.
> http://www.eevblog.com/forum/testgear/ie/30/
> but the picture shows Cambridge Instruments, but the title shows IET Labs.
> Dave
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