UNI-T UT61B vs UT61C

[inquirer]

UT61B vs UT61C

Can someone explain what's the difference between these two multimeters? Thanks!

[Monkeh]

The B is 4000 count, the C is 6000 count.

[inquirer]

What does this mean and what about the different ranges in DC and AC voltage and current?

[rolycat]

Take a look at Dave's explanation:

http://www.eevblog.com/2009/08/21/eevblog-26-multimeter-counts-accuracy-resolution-calibration/

[Monkeh]

What does this mean and what about the different ranges in DC and AC voltage and current?

Those are exactly what it means.

The B will measure up to 40mV with two decimal places, and the C will measure up to 60mV with two decimal places. They drop one digit when moving to 400mV and 600mV respectively, and on up the range.

[inquirer]

Thanks guys!

I watched the video. If I got it right both the c and b have the same accuracy?

Is C better than the B?

[inquirer]

I just saw that E has more counts and better accuracy. So accuracy wise the E is the best unit of the series, right?

[rolycat]

I just saw that E has more counts and better accuracy. So accuracy wise the E is the best unit of the series, right?

Right. The UT61E is generally reckoned to be a decent low cost meter for low voltage hobby use.

The two major omissions are a backlight and temperature measurement.

[inquirer]

I just saw that E has more counts and better accuracy. So accuracy wise the E is the best unit of the series, right?

Right. The UT61E is generally reckoned to be a decent low cost meter for low voltage hobby use.

The two major omissions are a backlight and temperature measurement.

It would be nice if the thermometer was included, but I can do without one. As for backlight according to there site it is included: http://www.uni-trend.com/UT61E.html

[Monkeh]

Their site lies. It claims auto power-off too.

[angelioto007]

can you guys please help me? i can´t decide beteween ut61c and ut61d. which one should i buy?

[Lightages]

I would buy neither. IMHO the UT139C is a much better buy than the UT61B/C/D. It is arguable if you want a PC connection as the UT139C does not do this. It does have a back light, temperature, good input protection, fast continuity, and all the measurements you might want. The UT61E has a fast continuity test whereas the UT61B/C/D do not and it also is more accurate.

If you do not need a PC connection I would strongly suggest the UT139C instead over any of the UT61X series.

[Matje]

can you guys please help me? i can´t decide beteween ut61c and ut61d. which one should i buy?

The one that better fits your requirements and available money - you need to define your requirements obviously. The manuals are available online, read them.

Differences I can see from skimming the manuals:

C: has temperature measurement, has automatic sleep mode

D: has separate AC and DC voltage on rotary switch, has true RMS

So, just decide what is more important to you. ;-)

[DanielS]

Personally, I got the 61E - I wanted the extra resolution partly as a sanity check for my 3 1/2 multimeters, most of which $5-10 cheapies simply for the convenience of being able to keep tabs on multiple supply voltages and currents at once instead of moving leads around.

The display is fairly readable even under low-light conditions (ex.: scattered light from an LCD in an otherwise unlit room) so unless you need to work in near-total darkness, the lack of backlight should not be much of an issue.

[angelioto007]

can you guys please help me? i can´t decide beteween ut61c and ut61d. which one should i buy?

i´ve decided, i´m gonna buy the c type, ´cause i´ll just need it to do low voltage stuff dc mainly, not high voltage and i want to replace my cheapo with something better, i don´t trust my cheapo any more - continuity test sucks on it and manual ranging is just waste of time...
anyway thx guys for your suggestions and tips, really helped me 

[Lightages]

If I am correct, the C models has a very slow continuity test too. Let us know!

And why would you spend the same money as a UT139C and get something much less well built and not as safe?
http://www.ebay.com/itm/Uni-T-UT139C-True-RMS-Digital-Multimeter-with-Temperature-NCV-Backlight-/171213085325?pt=LH_DefaultDomain_0&hash=item27dd185a8d

[retiredcaps]

If I am correct, the C models has a very slow continuity test too. Let us know!

C continuity is slow.  See 7:30 into video



Electronupdate is a member here and originally posted

https://www.eevblog.com/forum/testgear/uni-t-ut61c-multimeter-teardown-and-review/

In addition, his UT61C is broken trying to help someone

https://www.eevblog.com/forum/beginners/broken-uni-t-ut61c-or-am-i-missing-something/

And at least one UT61C was shipped with a missing resistor which I helped the OP discover. 

[miguelvp]

If you can change the count the continuity test will be faster I think, but don't hold me to it

[DanielS]

If you can change the count the continuity test will be faster I think, but don't hold me to it

The UT61E (the 22 000 counts model) has very fast, quick-latching (as in non-scratchy) continuity testing.

Getting the bundled probes to make good contact for continuity testing can be somewhat irritating though.