Handheld DMM with milliohm measurement

[HooRide]

My Fluke 179 only does tenths of an ohm and could use the extra resolution(?) to troubleshoot a bad ground in my car.

It's time to upgrade to a more capable handheld DMM.

Any suggestions in the Fluke or Agilent product lineups?

Also, could someone please explain digits & counts & range & resolution?

[rsjsouza]

My main DMM is also a 179 and I recently got a 8060a just because it was really a bargain (US$23.00) for the extra counts (20.000 count), .01 ohm resolution and conductance. Still use the 179 for most everything else, especially high current and voltage.

For an explanation of resolution, accuracy, count, etc. check Dave's episode 26.

[madires]

My Fluke 179 only does tenths of an ohm and could use the extra resolution(?) to troubleshoot a bad ground in my car.

It's time to upgrade to a more capable handheld DMM.

Get another handheld DMM and do a 4-wire measurement (see Daves and Mikes videos on tinned PCB traces).

[AndyC_772]

The 289 has a 50 Ohm (full scale) mode which can resolve down to 1 mOhm, but the real problem with such low resistances is that the probe-to-test point resistance becomes very significant. It also varies a lot with contact pressure and cleanliness, so you can't just expect to zero it out.

Your best bet might be to pass a known current through the path you want to measure, then use the meter you already have in voltage mode to explore the voltage drop at various points - ie. do a 4 wire measurement, as already suggested.

[Kevin.D]

You can make a milliohm adapter for your multi meter for a couple of $ .
If it's only for fault finding you dont need anything posh .

https://www.eevblog.com/forum/projects/milliohm-resistance-adapter/