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Clampmeter DC current measurement - using UT210e
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Peter_O:

--- Quote from: joeqsmith on August 28, 2022, 04:08:03 pm ---
--- Quote from: Peter_O on August 28, 2022, 08:05:49 am ---<snip:>
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it has a degauss coil built into the head?  Have you tried to magnetize it to see how well it works?     

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No, I tried near to nothing so far. The Micsig is quite new on my desk. I plan to start a seperate topic about it to avoid spoiling this one.   :-[
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Hydron:
Worth noting that "800kHz" in the micsig was actually a >2MHz (I think more like 3MHz) -3dB point in reality when I tested it. Am interested in what the actual difference is between the two models (the more expensive one actually specifies this sort of bandwidth).

Both the uni-t and the micsig are great value, I have them both at work and the only reason why I don't have a micsig current probe at home is that I have a couple of the Tektronix A630x probes. Uni-t would be my first buy when on a budget, but given their different form factors and abilities one doesn't replace the other.

The instructions about keeping the probe in the orientation it will be used in when zeroing is spot on - when you look at the fields due to current in the wire they're on the same order as the earth's field, hence any magnetic circuit with a gap (e.g. for the hall or magneto resistive sensor like the micsig or uni-t uses) will have a strong reaction to orientation when in a sensitive range. Problem is solved in the Tek probes by using a thin film hall sensor, a nulling coil, shielding and lapped core mating surfaces, but this comes with a major price increase (though some cheaper options of the same type have thankfully started to appear on AliExpress etc).
DaneLaw:
210E seems to be a fan favorite amongst the hobby segment and the prices you could get them for like 5 years back (25 to 30US), it was a no-brainer., nowadays and the last 3 to 4 years.. quite a few others that also deliver 1mA res. and also delivers dual display (hz) and cost around the same 30 to 35US, like the ACM91 & ACM92... though haven't tried them.
I only got two stand-alone AC/DC clamp meters and both quite cheap models as my use case is solely household and hobby-use (Unit-T210E and HT208D), after I got my scope a few years back and was curious to look at current waveforms as a newcomer on a strict budget trying to learn and wanted to see the current waveform on high powered lasers., - I went down the cheapest Chinese rabbit hole for AC&DC clamp meters for scopes, and purchase four different AC/DC versions / though two of them is mainly intended for DMM and quite high current signals.
Hantek CC65 40US (20k) ETCR007 50US (100K), AllsunEM264 25US, and HP615 12US.(all incl. shipping)
Among these cheap variants, it was hit-and-miss., and they varied a lot- noise, sensitivity, and accuracy' as some of them are clearly intended for high current signals, but the Hantek CC65 had way the cleanest signal, and the ETCR007 was horrendously noisy even though it is also intended for low current signals. (sub 60A)and was the most expensive at just under 50 bucks..

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CC65 20K / ETCR007 100k
https://i.imgur.com/Cj2B5AJ.mp4
12US HP615.
https://i.imgur.com/pgAQYxY.mp4
But the convenience of these stand-alone AC&DC current clamp meters.. are second to none and my 210E is quite spot on if take my precautions in the 2A range, while the 20A & the 100A range.. I recall the figures were not that accurate (on my unit).
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