Products > Test Equipment
Review and tear-down of UNI-T UT612 LCR meter
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Wytnucls:
I ran a small test to see how the UT612 fared with 10 small 5.6 Ohms resistors and 2-wire measurements.
I did a fresh calibration and used the plug-in test gizmo provided, to eliminate test leads, with a 100kHz current, which provided the best results.
I used the Gossen 30M and Rigol DM3058 with 4W measurements as control DMMs.

The calibrated Gossen and Rigol are very much together, within 2 mOhms, with a 2 mOhms calibration offset taken off.
The UT612 has a large 22 mOhms offset, otherwise doesn't fare too badly, reading within 7 mOhms of the Gossen, after the 22 mOhms correction.
The offset on your meter could be different of course, depending on original manufacturer calibration.
The offset could also be partially attributed to the 2-wire losses in the blade contacts.
MCCSolutions:
Great Review!

Based upon your review im either going to get this unit and add my own lithium and a recharge port or im going to wait for a better one to come along that is rechargeable and has a better display.

I really wish the big DMM's came with LSR/ESR.......

What do you think about this one in comparison to the UT601 or UT-50D, is it really worth the price difference?
Wytnucls:
The UT601 and UT-50D are very basic meters, but depending on your requirements, may be all you need. They are not proper LCR meters though, lacking frequency selection and not measuring ESR, dissipation factor and Q. Their range is also much narrower.
MCCSolutions:
K! Thanks! Yea I do mostly DC PSUs and TVs but im one of those people who would rather have the capability just in case. Looking forward to your next review!  :)
HiTech:
Sold my UT-612 on fleaBay. Got tired of positioning the unit "just so" due to the funky display issue as well as a laggy response from one of the push buttons.... I suspect a buss commun. problem (was intermittent). I didn't like the bogus 4-wire clips either.... they shouldn't even be listed as being Kelvin on some of the internet ads selling them. There's no shielding nor proper wiring to the clip halves. I never felt solid about the meter after using it a few times. The Applent AT824 & AT825 cost several more $$ and the quality/performance is far above that of the Unit-T.  I now have an Applent AT825.
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