It's the nature of the DC clamp.. 200mA does seem a bit high. I've posted about how to trim the pots and degauss them if things get really bad to where you can't zero them. Assuming the meter reads correctly as you sweep the current, I would just leave it.
Hi, guys! I also became the owner of UT210E!
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
Measurement of a direct current pincers not so simple task as seems.
In fact they measure a constant magnetic field which can be from anything, even from a metalwork nearby therefore resetting to zero before measurement is mandatory.
I recorded video of process of resetting to zero of the current indications in the DC mode at UT210E. This method allows to reduce residual indications in the mode of measurement of a direct current (DC 2A Dotless, 2A,20A,100A) without the need for EEPROM correction without the programmator. Thanks of
kDnZP from a Russian-speaking forum!
ATTENTION! To do only if there is a backup copy of EEPROM!1. To switch off device.
2. To clamp HOLD+SELECT and to switch to the "resistance, ring-up, diode, condenser" mode.
3. To see a text of "CAL", to release the HOLD+SELECT buttons
4. To wait. To wait long and not to hurry. To wait so far there will pass all self-tests until squeaks, then still to wait and wait for the moment when there are changing indications of the millivoltmeter. I.e. when the self-test will be completely passable, it will take ~ 2-3 minutes.
5. Further it is possible to switch the selector on 20A, to press the ZERO button and to nullify indications. At the same time the instrument in hand not to hold, give time for that that indications calmed down, to place the instrument where least of all el./magn. noises and the more so far away from magnets.
6. To switch the selector on 2A and to repeat the same as in point 5.
7. If necessary it is possible to modify values on other interesting ranges
8. On the end of calibration - to transfer the selector to "OFF"
9. To switch on ut201e and to check indications, if necessary - to repeat.
The link to video which explains this process.
https://yadi.sk/d/03JDsZLB37xiTf