Groupbuy for UNI-T UT210e clamp meter for tailcap current readings

I’m on the list Freeme, could you send me the code? thanks for your efforts !

My DMM is rated up to 20A (UT50B here at FT), so don't think it's a problem, maybe?? I do have a couple triples - one S2, one X6, one quad X6, one quad SupFire.

I did do some quick testing on that - pretty sure when the clamp meter read negative, the amps readings was lower. @work now - no access.

Mine has a black button labeled: ZERO, press it, and the reading zeroes ?? Yes - I do always press hard, but also found a little NO-OX-ID treatment helps bump up the readings by improving connectivity at the contact points.

Again over the years, very consistent 2.9A to 3.0A readings with my DMM on 2.8A Nanjg 350 7135 drivers, so always thought my DMM setup was dead-on accurate for these relatively low amp readings. Again, drivers with 350 7135's always read high, 380 7135's always read low. Others have commented on the same thing.

I really need to do more head-to-head testing though, plus I didn't do it today, but plan on bringing my lights/meters into work and compare against the o-scopes with clamp meter attachments we have here. We got Tektronix, Fluke, and I was told the clamp meter attachments were pretty expensive, but I'll get more info on the equipment first. Don't think we do much here with this level of DC voltage at amps this high, but not sure.

One thing to consider is that the meter type has a much bigger impact on DD lights than current-regulated lights.

You can use a multi-meter with a relatively high burden voltage (shunt + fuse + leads resistance) and it will give good results with a regulated light. The driver will simply compensate to get to the correct output current, as long as the cell voltage is high enough.

But that high burden voltage will make a significant difference when measuring a DD light.

Ahh, thanks DEL - was suspecting something like that.

Sprung for insurance, order tracking and and slightly upgraded the shipping to priority direct.

Thanks for the code Freeme, I used your link, but I copy/pasted from one browser to another, not sure how that works.

For those who already have this meter from Banggood, how are the included test leads?

mmm they are standard decent quality AWG14 (externally look-wise, not written) famous brand chinese cable, pretty much identical to mastech

ordered. Thanks very much

Ordered 1. Posted a thank you to freeme in his thread. I'll post a thank you to PD68 here. :)

I ordered mine just now. Thanks for making me buying things i didn’t realize i needed before :stuck_out_tongue:

Just ordered mine. Thanks for setting this up!

How much is it?

$28

With the effort you put in here it should be free from the supplier. freeme is organising this.

Edit. Took to long to type.

Confirmed as DEL mentioned, the 7135 based drivers do produce amp readings very close, very consistent between the UT50B DMM and the UT210E. Also confirmed, as Dale alluded to, the startling but expected contrast in readings of triple and quad FET DD mods - 8A-9A on the UT50B vs. 11A-12A on the 210E. I always knew my DMM readings were way low on these lights simply due to the fact of what lumens I'd measure vs. the amps.

To compare readings between the two meters, I took my triple X6 modded light and measured normally with the UT50B, but then added the UT210E clamped over one of the UT50B's leads, and the UT210E actually read slightly lower, about 0.05A lower in the 8A range of readings. This confirms to me the readings I'm getting on the UT210E are pretty accurate compared to my UT50B DMM, and the droppage from 11A down to 8A is due to the added resistance of the DMM (and it's leads) itself.

So, it's all good - very happy with the meter . Hope you all find it a step up as well. I think it's great we got so many signing up for this meter, since we will be on equal ground, plus we will probably get a good idea on reliability to see the # of DOA's and failures over time, which I hope we don't get many of, of course...

B6: UT210E ordered.

Thanks.

Interested in one, thanks.

Ordered. Thanks very much.

Has anyone’s meter been shipped yet?