Products > Test Equipment
Uni-T UT71B or UT171B?
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Balcmeg:
Thank you, I will have a look!


--- Quote from: Fungus on August 06, 2022, 07:49:25 am ---
--- Quote from: Balcmeg on August 06, 2022, 02:05:21 am ---I will take some time later today to see if I find any dealer in US or Europe, Australia that might be willing to ship to HK, but from previous experience shipping would add quite a bit to the total cost.

--- End quote ---

I'm sure Welectron will send you one: https://www.welectron.com/Handheld

--- End quote ---
mqsaharan:

--- Quote from: Balcmeg on August 06, 2022, 02:05:21 am ---EDIT: From what I read so far here, It seems the UT171A is the better choice IF I do not find any Brymen or other suitable here, The A is lacking some features (that I will need to look closer at, but I will also not have to deal with the rechargeable batteries and can get a normal LCD screen)

/Stefan

--- End quote ---

UT171A has been discontinued as per their website. If you'll buy one now, you might not get any warranty.
If Uni Trend is locally available and you don't want to spend too much, UT71D could be an acceptable choice. It has very slow continuity and the front end components are ever lower specs than their newer meters but it has reasonable set of functions. You can check its review here: https://www.eevblog.com/forum/testgear/uni-t-ut71d-review/
UT171A will be a better choice than UT71D if you don't need AC+DC and temperature measurement functions. You can check UT171A review here https://lygte-info.dk/review/DMMUNI-T%20UT171A%20UK.html

If you don't have any special requirements then it'll all depend on your budget.
If you can afford an import from Germany, then may I suggest BM789 https://www.welectron.com/Brymen-BM789-Multimeter_1 *
All of Brymen meters are very good. You can choose according to your budget. As you go down in price they'll lack some features. If you find one that is affordable to you, we can discuss its pros and cons.

Qasim.

Edit: *  I better retract my suggestion of BM789. Seems like it still have some issues. You'll be better off with any of their 800 series multimeter.
Bobson:
UT-171B has EBTN, not OLED display, and it is perfectly readable under direct sunlight. It is way better than any UT-71x series DMM.
The only serious drawback I see, it has only 10 microvolt resolution both in DC and AC voltage mode, compared to 1 microvolt offered by most hi-grade DMMs.
mqsaharan:
Yes, UT171B has EBTN display. If it is usable in direct sunlight, then it will be even better indoors. Personally, I haven't used one. I only saw it in a very few youtube videos and I didn't like the hard to read display. If you are saying it is perfectly readable, then I'll have to check out the reviews more carefully again.

Anyway, the only problem remains is the battery. If you can live with rechargeable battery then great. Depending on the meter's design it gets flat even without use. For example: https://www.eevblog.com/forum/testgear/hear-kitty-kitty-kitty-nope-not-that-kind-of-cat/msg4343515/#msg4343515

Don't worry about 1 microvolt resolution. Manufacturers usually reserve that for their high end meters.

Please keep in mind that Uni Trend meters are geared more towards hobbyists and not exactly professionals even though they claim so. Lately, they have been including multimeter safety components in their new meters like UT171 series. Also, they are not very robust, means they get fried due to static discharge sometimes (not happened with many people anyway). I have to mention it since there is a chance of that happening. They are improving their products slowly. Personally, I am using a few Uni-Ts and overall, they are working all right.

For multimeter robustness, if you can spare time, check out joeqsmith's youtube channel https://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg/videos
He is also a member here and has been characterizing meters for their robustness. There is a long thread discussing all that https://www.eevblog.com/forum/testgear/hear-kitty-kitty-kitty-nope-not-that-kind-of-cat/
In his testing Uni Trend scores badly.
Bobson:
I think UT-171B & C versions are hi-grade DMMs, only UT-181 is higher in current Uni-T line. It has 0.025% best DC accuracy, 100 KHz TRMS AC+DC, concurrent AC & DC voltage measurement, 100GOhm resistance.

Considering robustness, I am not expert, but Joe Smith says UT-171B is better than the UT-181:
https://www.eevblog.com/forum/testgear/uni-t-ut171b-teardown/msg954809/#msg954809

UT-171B has several backlight levels (and keeps level after on/off), you should only rotate it sometimes to eliminate reflection glare, or just attach mate screen protector.

I don't use it for CATIII/CATIV, since I have a lot of other DMMs which are more suitable (APPA, Chauvin, Brymen, SANWA, etc). It is really useful general purpose instrument for electronics.
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