Seeking Feedback - How often have you used a Low Resistance Micro-Ohmmeter?

If you have the time, I'd appreciate if you voted in this poll. I'd like to get a sense of your need and use of low resistance micro-ohmmeters. Thanks.

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kmikemoo over 2 years ago in reply to rscasny +4

rscasny Younger me used to use them to measure contact resistance on high voltage switchgear (aka circuit breakers) and transfer switches. Older me uses it to measure rotor and stator winding resistance…
shabaz over 2 years ago +4

I can imagine them being extremely handy for measuring electrical contacts, such as relays to examine if they are failing, or for checking the resistance quality of shielding or grounding between different…
shabaz over 2 years ago in reply to beacon_dave +4

Interesting use! Maybe the inductance may be an issue, although some meters may be more stable than others. Presumably the industrial meters are more immune to that. Also, some meters may use a slow…

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shabaz over 2 years ago

I can imagine them being extremely handy for measuring electrical contacts, such as relays to examine if they are failing, or for checking the resistance quality of shielding or grounding between different parts of a system or enclosure perhaps!

I don't have a micro-ohmmeter, but do have a couple of milli-ohmmeters (one commercial one, and one that was a DIY project Building Frank's Milliohm Meter that is pretty accurate (and that one has the characteristic that it doesn't pass high current through the device under test [for some applications that's a very useful property, although other applications may not require that]); it can even be used to measure MOSFET on resistance.
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anniel747 over 2 years ago in reply to shabaz

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shabaz over 2 years ago in reply to anniel747

That's correct for shielding, I specifically mentioned just checking "resistance quality" (i.e. a maintenance operation) some may miss that! : )
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shabaz over 2 years ago in reply to anniel747

That's correct for shielding, I specifically mentioned just checking "resistance quality" (i.e. a maintenance operation) some may miss that! : )
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