Uni-t UT60H teardown - Page 1
Forum section: electronics / testgear

author: coromonadalix
author_rank: Super Contributor
timestamp: March 06, 2016, 07:15:45 pm
content: Hello as anyone came across this model ??I need an auto range of volts, but not millivolts and volts separated. Were i work i have to always toggle between the two ranges / functions on a fluke 83.Tried a 22000 counts, but it is not fully what i need.A 40000 count is what i need, has anyone made some pics of the inside, or a teardown video of itthks

author: mos6502
author_rank: Frequent Contributor
timestamp: March 06, 2016, 08:10:26 pm
content: Looks really slow ... like maybe 1.5 updates/s.

author: Lightages
author_rank: Unknown
timestamp: March 06, 2016, 08:26:03 pm
content: I wouldn't take any of the UT60X series to work. Maybe the UT139C, or the UT171A. They are more reliable. Not many multimeters have auto ranging from milivolts to volts. The Digitek DT2843R does, but I would not use it for work.

author: Wytnucls
author_rank: Super Contributor
timestamp: March 06, 2016, 08:46:01 pm
content: Look for a second-hand Fluke 185 or 183 aka Tektronix TX3 or TX1.Auto ranges V/mV 500mV range 10uV resolution in 50,000 count mode.http://www.ebay.com/itm/Tektronix-TX3-True-RMS-Multimeter-DMM-w-Digital-Thermometer-/322026464335?hash=item4afa45e44f:g:DpcAAOSwFqJWmuOP

author: coromonadalix
author_rank: Super Contributor
timestamp: March 06, 2016, 09:27:52 pm
content: thksSince it was rebadged as a fluke 185https://www.eevblog.com/forum/testgear/fluke-185-review/mmmmmm seems to be slow and cumbersome if you want to change the fuses, it is also based on a nec 8 bit cpu ?? and finally it is a 5000 count dmm with 50000 count in high res ...Im still interested in the Uni-t model ... i have it around 100$ but i wanted to see the inside loll

author: Wytnucls
author_rank: Super Contributor
timestamp: March 06, 2016, 10:59:43 pm
content: There is no mA fuse in those Fluke/Tektronix meters. Yes, if you're going to blow 10A fuses regularly, there are better designs out there. The 60H is no better in that respect.The 185 gives you a better resolution and accuracy than the 60H. At equal resolution (100uV), in 5,000 count mode, its accuracy is 0.05%+1, instead of 0.1%+5 for the 60H.The 60H is based on an old design, with 250V glass fuses. VDC accuracy is pathetic for a 40,000 count meter. The similar UT71D has it at 0.025%+5.I haven't seen the PCB, but I don't expect anything different from the regular very average UNI-T design. Low energy circuits only.

author: Wytnucls
author_rank: Super Contributor
timestamp: March 06, 2016, 11:10:41 pm
content: Here is the UT60E PCB. Should give you an idea of what to expect.

author: coromonadalix
author_rank: Super Contributor
timestamp: March 07, 2016, 11:43:34 am
content: thks guysWell it is a very cheap meter if i see the fuses, but i only need voltage measurements. ill try to checks other brands too.If some of you knows other meters with only a voltage selection, not mv and volts ...

author: Wytnucls
author_rank: Super Contributor
timestamp: March 07, 2016, 11:49:44 am
content: Well, technically, the UT60H doesn't have a mV range. Lowest range is 4V with no high impedance mode.At least, it has a sparkgap and PTC. PCB designers have left space for beefier fuses too.

author: coromonadalix
author_rank: Super Contributor
timestamp: March 08, 2016, 04:57:33 am
content: exactly what ive tought about the fuses ... in 4v mode it should be enough for my needs since it would do 4.xxxx (40000) count, but it come around 100$ in my country (Canada)