Author Topic: ut71e for $30 and AC+DC mode (is it truth?)  (Read 1751 times)

0 Members and 1 Guest are viewing this topic.

Offline 001

  • Super Contributor
  • ***
  • Posts: 1168
  • Country: aq
ut71e for $30 and AC+DC mode (is it truth?)
« on: October 01, 2018, 07:27:41 am »
Hi
I pic UT71E at sunday market and play now. I see a lot of silly treads about CAT ratings  :blah:
But what abouT  accuracy and tolerance?

The main feature for me is TrueRMS AC+DC
Is it works adequate here?
« Last Edit: October 01, 2018, 10:14:08 am by 001 »
 

Online MiroS

  • Regular Contributor
  • *
  • Posts: 59
  • Country: pl
Re: ut71e for $30 and AC+DC mode
« Reply #1 on: October 01, 2018, 08:01:06 am »
30usd in trash. expensive piece of plastic. safe the planet and give it for recycling.
 

Offline jaromir

  • Supporter
  • ****
  • Posts: 273
  • Country: sk
Re: ut71e for $30 and AC+DC mode
« Reply #2 on: October 01, 2018, 08:12:23 am »
Hi
I pic UT71E at sunday market and play now. I see a lot of silly treads about CAT ratings  :blah:
But what abouT  accuracy and tolerance?
Which part of manual isn't clear to you?
https://www.manualslib.com/manual/538642/Uni-T-Ut71c.html?page=60#manual

The main feature for me is TrueRMS AC+DC
Is it works adequate here?
Adequate for what?
 

Offline 001

  • Super Contributor
  • ***
  • Posts: 1168
  • Country: aq
Re: ut71e for $30 and AC+DC mode
« Reply #3 on: October 01, 2018, 09:02:28 am »
which part of manual isn't clear to you?

manual says about fake CAT ratings
may be AC+DC mode is fake too, isnt it?
 

Online MiroS

  • Regular Contributor
  • *
  • Posts: 59
  • Country: pl
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #4 on: October 01, 2018, 12:33:25 pm »
All is in specification. It is like many other cheap meters, useless for anything serious, useless for audio hobbyists, useless for electricians,  maybe it can be ok for arduino players or  checking accu voltage,   or car battery.
 

Offline 001

  • Super Contributor
  • ***
  • Posts: 1168
  • Country: aq
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #5 on: October 01, 2018, 02:12:09 pm »
All is in specification. It is like many other cheap meters, useless for anything serious, useless for audio hobbyists, useless for electricians,  maybe it can be ok for arduino players or  checking accu voltage,   or car battery.

So
did You have this meter?

Or that You can do is only hate everything, isnt it?
 

Offline Candid

  • Regular Contributor
  • *
  • Posts: 154
  • Country: de
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #6 on: October 01, 2018, 07:03:47 pm »
Accuracy and tolerance are ok, only the CAT ratings are more or less fake. There are different version of the PCB. Especially in Europe the chance to get a more secure version is given. E.g. my 71E has big HRC fuses what the international versions often don't have. But it was missing PTCs even it has places on the PCB for them. Concerning the quality of the routing on the PCB the European version is as bad as the international one. So if you know about these things the 71E is ok to use.
 
The following users thanked this post: 001

Online MiroS

  • Regular Contributor
  • *
  • Posts: 59
  • Country: pl
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #7 on: October 03, 2018, 07:40:31 am »
All is in specification. It is like many other cheap meters, useless for anything serious, useless for audio hobbyists, useless for electricians,  maybe it can be ok for arduino players or  checking accu voltage,   or car battery.

So
did You have this meter?

Or that You can do is only hate everything, isnt it?
I have/had others till I decided no more this junk. Look at ac error above 1kHz and you will see how bad it is, see number of digits  for error ...  it is junk.
 

Offline 001

  • Super Contributor
  • ***
  • Posts: 1168
  • Country: aq
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #8 on: October 03, 2018, 09:09:32 am »
NOTE: This message has been deleted by the forum moderator Simon for being against the forum rules and/or at the discretion of the moderator as being in the best interests of the forum community and the nature of the thread.
If you believe this to be in error, please contact the moderator involved.
An optional additional explanation is:
« Last Edit: October 03, 2018, 11:49:23 am by Simon »
 

Offline Shock

  • Super Contributor
  • ***
  • Posts: 3105
  • Country: au
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #9 on: October 03, 2018, 11:36:01 am »
There are several reviews on youtube. I believe they didn't have too many problems tolerance wise when new and can be manually calibrated. There are a few discussions on the forum here about calibration and upgrading safety.

Asking if a meter possibly 5 years old with an unknown history will still be as accurate is a coin toss. $30 USD is not too bad value wise, I would make an offer though. The meter came with a pouch, probes, temp probe, USB data cable, alligator clips.

Soldering/Rework: Pace ADS200, Pace MBT350
Multimeters: Fluke 87V, 117, 27/FM     >>> Fluke 51/52 Thermometer Parts Required <<<
Oszilloskopen: Rigol DS1054Z, Phillips PM3065
 

Offline Simon

  • Global Moderator
  • *****
  • Posts: 14447
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #10 on: October 03, 2018, 11:49:15 am »
All is in specification. It is like many other cheap meters, useless for anything serious, useless for audio hobbyists, useless for electricians,  maybe it can be ok for arduino players or  checking accu voltage,   or car battery.

So
did You have this meter?

Or that You can do is only hate everything, isnt it?
I have/had others till I decided no more this junk. Look at ac error above 1kHz and you will see how bad it is, see number of digits  for error ...  it is junk.

This tread about UT71E not about "others" china meters
Don`t post here please since I have few words about  "other" polish emigrants   too 8)

And who the hell are you? Come back in a week and see if you can be more civil!
 

Offline ogden

  • Super Contributor
  • ***
  • Posts: 3021
  • Country: lv
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #11 on: October 03, 2018, 11:51:51 am »
Review :



If such costs 30$, I would say good price/value.
Can't comment about tolerances but as already noted - refer to specs. Manufacturers as Uni-T usually do not lie there.
 

Online MiroS

  • Regular Contributor
  • *
  • Posts: 59
  • Country: pl
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #12 on: October 04, 2018, 06:15:54 pm »
If such costs 30$, I would say good price/value.
Can't comment about tolerances but as already noted - refer to specs. Manufacturers as Uni-T usually do not lie there.

30$ really ?  >:D  I bought 4.5 metter (20 000 counts) for 10$ so  eeeeeee really this 30$ seems to be way to high price for it
 

Offline Fungus

  • Super Contributor
  • ***
  • Posts: 10488
  • Country: 00
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #13 on: October 05, 2018, 05:18:38 pm »
Review :



If such costs 30$, I would say good price/value.
Can't comment about tolerances but as already noted - refer to specs. Manufacturers as Uni-T usually do not lie there.

Accuracy is only a small part of the equation.

Those freebie DT830M meters are accurate but you wouldn't call them good meters.
 

Offline joeqsmith

  • Super Contributor
  • ***
  • Posts: 6211
  • Country: us
Re: ut71e for $30 and AC+DC mode (is it truth?)
« Reply #14 on: October 05, 2018, 10:57:21 pm »
There is a video out there somewhere of a guy pulling one along with a boat and later dragging it down the stairs with a rope.  The meter survived just fine.   Not bad for a free meter.
How electrically robust is your meter?? https://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf