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Good clamp meter for low DC currents
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HKJ:

--- Quote from: csuhi17 on December 29, 2023, 12:20:36 pm ---I may have misinterpreted the description of the Benning that I linked to, which is why I deleted my previous question.
If I managed to understand correctly, then a
The uA measurement does not apply to the clamp meter...
The clamp meter measures with a minimum scale of 10mA.

--- End quote ---

Clamp meters measures the magnetic field around a wire and calculates the current from that, when measuring DC the earths magnetic field is a issue for low current measurements.

For that reason most clamp meters works with resolutions of 0.01A or worse, but there are a few meters with better resolution, many of them they are not really more precise and the extra digit is hard to get any reliable information from.

A few like the above Fluke and above Benning are made to really work at low current, the Fluke with 0.01mA resolution and the Benning with 0.1mA resolution. I do not know much above the Fluke, but the Benning can be used to see current a bit below 1mA (it requires careful use).

A few clamp meters has regular DMM shunt for low current measurement, the above do not, but uses the clamp.
Martin72:

--- Quote from: Martin72 on December 28, 2023, 05:13:55 pm ---The Owon sounded so interesting to me that I ordered it and it should arrive tomorrow.
--- End quote ---
Actually arrived today.
I still have the UT210e, so it will be easy to compare.
First impression of Owon after unpacking:
Good touch quality, I wouldn't have thought.
Martin72:

--- Quote ---Clamp meters measures the magnetic field around a wire and calculates the current from that, when measuring DC the earths magnetic field is a issue for low current measurements.

--- End quote ---

It would be better if they were equipped with the current compensation method, which increases a current through a winding on the core until the difference to the measured current is 0.
These current clamps can then also be easily demagnetized; they have a corresponding function for this.
But unfortunately this is not feasible in such price ranges, perhaps the fluke in question has this in order to be able to measure so sensitively at all.
In any case, the Owon showed an "insane offset" when you switch to DC - I find over 300mA intense.
You can zero it with the "Zero" button, but that only conceals it.
I have now taken a few measurements, preferably in the lower mA range, pictures are currently being prepared.
Martin72:
Here are a few measurements, which I will soon make a little more detailed (other currents, voltages, resistance, etc.), possibly in a new thread.
csuhi17:

--- Quote from: Martin72 on December 29, 2023, 05:25:43 pm ---In any case, the Owon showed an "insane offset" when you switch to DC - I find over 300mA intense.

--- End quote ---

I have 6-1 of these, I could have left one :(
At 2A, I have an offset from -150mA to 600mA.
But the measurement is not affected.
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