Shunt VS clamp meter accuracy

[Craig]

So I have a few of these https://www.amazon.com/DROK-Accurac...XWW2H95R8EQP&refRID=D3J3K1S3XWW2H95R8EQP&th=1

And a few of these https://www.aliexpress.com/item/33026735761.html?spm=a2g0s.9042311.0.0.27424c4d0VJaP7

It seems like the clamp type meters show 0.3 to 0.4 amps higher when testing the same load. I have put different voltmeter on the shunt and they all give same readings. So what is likely to be more accurate is there a way of testing them?

The shunts are on the high side if that makes a difference and the clamps are on the low side.
The high side is supposed to be more stable from what I have read .

 

[grizzzman]

I would trust the shunt over clamp type coil unit

 

[tictag]

LOL! Sorry, had to laugh, I read your post and immediately thought of my Fluke clamp meter which is very accurate and cost me an awful lot of money then I clicked on the two links and saw the two sub-£10 devices you are considering!! I wouldn't trust either to give me an accurate reading! Sorry, didn't mean to laugh, it just tickled me.

Between hall-effect sensing (which can be affected by, for example, the earth's magnetic field) and direct voltage measurement, I would say the shunt would always be more accurate. That said, most shunts I've seen are at most 1mOhm (my Victron shunt is 100uOhm), this one is 5mOhm so far less sensitive and more prone to heating inaccuracies (P=I2R).