Products > Test Equipment
Is this a real or fake Fluke multimeter?
bdunham7:
--- Quote from: BeBuLamar on July 05, 2023, 04:18:44 pm ---Well I use the DMM to check battery all the time. If I get 1.38V I would toss it.
--- End quote ---
You might be landfilling a battery with >1000 flushes left in it! I'll take one of my 1.25V 'almost dead' batteries and put it in a small single-cell LED flashlight and see how long it goes--and I'll report back.
Edit: So I did that and the battery lasted 2 hours before the light was dim enough to not be useful. The battery measured 0.99OCV and just into the read 'dead' zone on the tester. This is one of those cheapo single-cell boosted LED models that draws about 1A initially and then slowly gets dimmer and draws less as the battery depletes. It was drawing about 250mA, so the battery had ~500mA left, or a bit less than 20%, at 1.25OCV. So if you throw away a battery at 1.38OCV, it might have a third or more of it's life left, or it might be completely depleted. The battery tester, OTOH, seems to give consistently correct results. YMMV.
--- Quote ---I don't see any problem with that. I much prefer that than a plug with the light or a non contact device.
--- End quote ---
A modern tamper-resistant outlet will change your mind in a hurry. But seriously, what does everyone have against the 3-light testers? They test all three lines at once and put a small load on the circuit which eliminates the "ghost voltage" issue. And they automatically spot miswired outlets whereas you really have to pay attention to notice when using a DMM. Also, unless your DMM has Lo-Z it is susceptible to a false reading due to a spider or a tiny bit of leakage.
themadhippy:
--- Quote --- And they automatically spot miswired outlets
--- End quote ---
everyone ive owned wont show neutral earth reversed,which can be fun when trying to track down the reason your rcd keeps randomly tripping
--- Quote --- I would take a pair of test leads and wire them in a plug
--- End quote ---
or buy a proper adaptor ,uk version but id guess theres an american variant
wasedadoc:
--- Quote from: themadhippy on July 05, 2023, 05:49:37 pm ---
--- Quote --- And they automatically spot miswired outlets
--- End quote ---
everyone ive owned wont show neutral earth reversed,which can be fun when trying to track down the reason your rcd keeps randomly tripping
--- End quote ---
True enough but a DMM fails there too.
mwb1100:
I've been sorta following along this thread. I'm no electrician, but I've wired up some outlets before. Incorrectly at least once.
While trying to learn a little more about this outlet checking stuff I came across this Fluke Application Note (that is no longer on Fluke's site for whatever reason) that might be of interest to some people here:
- https://www.transcat.com/media/pdf/power_problems_receptacle.pdf
Bud:
My Logitech wireless mouse works down to 0.8V. The used AA batteries I pull from other devices I save for that mouse.
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