Products > Test Equipment
Good clamp meter for low DC currents
Martin72:
--- Quote ---I suggest continuing here.
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OK... ;)
Here is a table with the values, on the far left are the actual calibrated values from DMMCheck Plus.
I like the Owon better, currently.
It could be the successor to the UT210E as a low-cost clamp meter, with higher resolution and slightly more functions.
DaneLaw:
If I recall the Owon CM2100/B had a tendency to drift alongside a heavy offset, and with a very barebone input protection close to non-existent, but that is Owon meters in a nutshell..
but like always with these cheap meters.. it can vary a lot from unit to unit and how lucky you are in that lottery.
but cheap clamp meters with 1mA DC resolution, are a dime a dusin these years and can be had for around 25 euro and up.
even AC+DC clamp units with 1mA DC & 0.1mA AC on the clamp is from 30 euro and up (incl. delivery and 25% EU VAT)
but none of them seems optimized for low current with a small gap/eye, so the performance will likely be around the norm, as we see with the likes of 210E & co.
Martin72:
If you really need accuracy in the mA range, you unfortunately have to spend money, you can't have certain things cheaply.
I still like the Owon better than the Uni-T, but that shouldn't cloud the fact that we're talking about 40€ devices here.
I think you can expect something "serious" from the Benning onwards.
BILLPOD:
Well Martin, at least you got batteries with yours :clap: And I sprung for the model with Bluetooth, as I have a penchant for meters with it. My comparison was not exacting as yours, but my UT210E and CM2100B ran neck in neck, always within a couple counts, (least significant digits).
I find the bluetooth app is better than most of my other BLE meters,
as it has multiple recording options. I'm going to put my UT210E in the Owon pouch and keep it in my vehicle and keep the Owon on my bench,
or within easy reach. :popcorn:
Kean:
Sorry that I didn't get a chance to run these tests last year... but here are the results.
I've attached the spreadsheet of comparison data in PNG and CSV formats. I skipped recording a few results where they were not meaningful.
For the Fluke 771 with currents below around 1mA it could take about 10 seconds to settle, but did a pretty decent job.
I ran the tests twice to verify they came back much the same. I also experienced a power failure in the office while doing this, so I ended up having to redo half of it a third time. I tried not to move anything, but I am sure there was some drift during the hour this all took.
Forgot to mention here, that the current source was my Advantest R6142. Also, none of my gear has recent calibration - but my 34465A, 34401A, and 34972A all agreed within a few counts when last compared.
Happy New Year!
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