Author Topic: New TRMS Uni-T UT139C DMM is available now  (Read 107791 times)

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Offline Kbird

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #200 on: October 29, 2018, 11:10:21 am »
Thanks for the Link Carnage  :-+

*** looks like I was right about the initial 1.8v+ being too high (Over 3.6v total) when new....

However I am unsure if the 139C has the same limitation?

KB.
« Last Edit: October 29, 2018, 11:24:01 am by Kbird »
Uni-T UT-139C
Uni-T UT-210E                  Electronics Noob....
MC-52-0055-6
 

Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #201 on: October 30, 2018, 12:55:53 am »
Can it cause any damage to the meter if I use the Energizer Ultimate Lithium?

Does the meter has any protection if the batteries has a higher voltage than what it call for?
 

Offline Kbird

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #202 on: October 30, 2018, 05:27:47 am »
Can it cause any damage to the meter if I use the Energizer Ultimate Lithium?

Does the meter has any protection if the batteries has a higher voltage than what it call for?

I don't know sorry and as far as I have read the Manual does not mention Over-voltage on the Battery Power at all. ( may have missed it?)

Lower Battery Pwr warning light is 2.4v and the Meter will not work below 2.2v  ( backlight may not work below 2.6v or be dim)
Uni-T UT-139C
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Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #203 on: October 30, 2018, 10:34:35 pm »
Will the Eneloop Pro work or any NiMH at 1.2V?

What are you using for batteries in your Uni-T UT139C?

 

Offline Kbird

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #204 on: October 31, 2018, 05:09:51 am »
Will the Eneloop Pro work or any NiMH at 1.2V?

What are you using for batteries in your Uni-T UT139C?

Just standard AA Energizer currently , also use the Duracell AA

I have had issues over the years with NiMh 1.2v cells in different devices eg Camera gear etc , so I avoid them nowadays. I do have some 1.5v+ Pure Energy Rechargables but was worried about leakage as the Batts sit along time in a Meter so I didn't use them.

According to the Specs at 2.4v it will work but I am not sure if accuracy is effect as it turns off at 2.2v according to the Specs.

Perhaps try emailing Uni-T and ask for more details especially the Upper limit and if you can use the 1.8v Lithiums...



KB.
Uni-T UT-139C
Uni-T UT-210E                  Electronics Noob....
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Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #205 on: October 31, 2018, 09:31:40 am »
Will the Eneloop Pro work or any NiMH at 1.2V?

What are you using for batteries in your Uni-T UT139C?

Just standard AA Energizer currently , also use the Duracell AA

I have had issues over the years with NiMh 1.2v cells in different devices eg Camera gear etc , so I avoid them nowadays. I do have some 1.5v+ Pure Energy Rechargables but was worried about leakage as the Batts sit along time in a Meter so I didn't use them.

According to the Specs at 2.4v it will work but I am not sure if accuracy is effect as it turns off at 2.2v according to the Specs.

Perhaps try emailing Uni-T and ask for more details especially the Upper limit and if you can use the 1.8v Lithiums...



KB.


I have the Energizer Max I probably going to use if I can't find anything else to use. I had to many Duracell leak in my devices to use them.

Look like my Eneloops aren't going to work.

I tried emailing Uni-T twice with no reply.

I also tried emailing the seller, I'm just waiting for a reply.

Is there a Uni-T in the U.S.?

 

Offline Kbird

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #206 on: October 31, 2018, 09:45:43 am »
Not as far as I know , there is a Nth American Sales link , maybe worth a try?

 

Neo Chen - North/South America & Australia

Tel: (86-769) 8572 3888-306

Email: neo@uni-trend.com.cn
Uni-T UT-139C
Uni-T UT-210E                  Electronics Noob....
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Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #207 on: October 31, 2018, 10:32:40 am »
Not as far as I know , there is a Nth American Sales link , maybe worth a try?

 

Neo Chen - North/South America & Australia

Tel: (86-769) 8572 3888-306

Email: neo@uni-trend.com.cn


I just sent him a email.

Thanks for all of the replies!  I'll let you know what he said if I get a reply.
 

Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #208 on: October 31, 2018, 10:35:36 pm »
I got a reply from the seller. He said to use Zinc Carbon batteries.

I had to Google Zinc Carbon batteries to see what it is and if it available.

Does Zinc Carbon have or hold more power than alkaline and do they leak?
 

Offline HKJ

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #209 on: October 31, 2018, 10:50:17 pm »
Does Zinc Carbon have or hold more power than alkaline and do they leak?

Zinc Carbon is about 1/3 the energy of Alkaline and cannot deliver very high power, I have published a few test of them.
They are worse than alkaline with leaks.
 

Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #210 on: November 01, 2018, 11:08:58 pm »
Does Zinc Carbon have or hold more power than alkaline and do they leak?

Zinc Carbon is about 1/3 the energy of Alkaline and cannot deliver very high power, I have published a few test of them.
They are worse than alkaline with leaks.

Thanks for the reply HKJ!

Do you think it would be safe to try Energizer Ultimate Lithium in the UT139C without any issue? Like shorting out something.
 

Offline HKJ

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #211 on: November 01, 2018, 11:16:40 pm »
Do you think it would be safe to try Energizer Ultimate Lithium in the UT139C without any issue? Like shorting out something.

I would expect so, the DMM chip is rated for 3.6V operating and 4V maximum.
 

Offline carnage

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #212 on: November 02, 2018, 09:32:58 pm »
Do you think it would be safe to try Energizer Ultimate Lithium in the UT139C without any issue? Like shorting out something.

I would expect so, the DMM chip is rated for 3.6V operating and 4V maximum.

Thanks for the reply HKJ!

I'm going to get a pack of Ultimate Lithium.
 

Offline Kbird

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #213 on: November 03, 2018, 03:16:12 am »
Do you think it would be safe to try Energizer Ultimate Lithium in the UT139C without any issue? Like shorting out something.

I would expect so, the DMM chip is rated for 3.6V operating and 4V maximum.

Thanks for the reply HKJ!

I'm going to get a pack of Ultimate Lithium.

If you have the same issue as the Brymen , then run them down to 1.6v in a flashlight and they should be fine , fresh my last pact was 1.82 or higher.

Post back please and let us know how it goes, thx.

KB.

Uni-T UT-139C
Uni-T UT-210E                  Electronics Noob....
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Offline soren

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #214 on: March 12, 2019, 02:54:21 am »
An unbranded version of the UT139C is currently on sale via Amazon Europe for EUR 10.99.

https://www.amazon.de/dp/B077ZQS94K
https://www.amazon.fr/dp/B077ZQS94K
https://www.amazon.es/dp/B077ZQS94K

I just received one and everything including probes and manual appear to be exactly like with the UT139C, except without the Uni-T name. If it's a clone, it is an extremely faithful one.
 

Offline rsjsouza

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #215 on: March 12, 2019, 05:26:47 am »
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 
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Offline stj

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #216 on: March 12, 2019, 12:24:57 pm »
i dont have a 139c, but if it uses the 0660 chip like the 210e or the aneng meters then it will run on eneloops etc.
i have been using ladda's in my 210e and 2 aneng's for over a year without problems.
 


Offline rsjsouza

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #218 on: March 12, 2019, 02:17:47 pm »
This is a completely different meter.
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Offline rsjsouza

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #219 on: March 13, 2019, 03:37:59 am »
Wow... Amazon delivered it in about 24h. I wonder if this was just around the corner from here.

It really looks the real deal. It even has the Intertek listing number, although on a sticker and not indelllible.

I did not open it yet. Will do at the first opportunity.
« Last Edit: March 13, 2019, 04:37:26 am by rsjsouza »
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Online hli

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #220 on: March 15, 2019, 07:11:30 am »
... appear to be exactly like with the UT139C, except without the Uni-T name. If it's a clone, it is an extremely faithful one.
Got mine from the german Amazon - 10.99 EUR delivered. Opened it up, and the PCB says 'UT139C' (look at the right side in yout photo). Compared to my older ones the PCB looks a little bit different. From the silkscrren it looks the old ones are at PCB revision -1 and the new one is at -4.
When I look at the product page now its at 39.99 EUR. So it seems to be a mistake on the sellers part...
 

Offline rsjsouza

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Re: New TRMS Uni-T UT139C DMM is available now
« Reply #221 on: March 15, 2019, 07:17:21 am »
... appear to be exactly like with the UT139C, except without the Uni-T name. If it's a clone, it is an extremely faithful one.
Got mine from the german Amazon - 10.99 EUR delivered. Opened it up, and the PCB says 'UT139C' (look at the right side in yout photo). Compared to my older ones the PCB looks a little bit different. From the silkscrren it looks the old ones are at PCB revision -1 and the new one is at -4.
When I look at the product page now its at 39.99 EUR. So it seems to be a mistake on the sellers part...
I opened mine and can attest it is a UT139C - same markings as yours, good input protection and excellent build quality. I even connected its inputs (ohm, continuity, diode, temperature, frequency) to a high voltage source and the meter did not even blink - a hint that the input protection is doing its work in protecting the meter. 

Amazon US still has it for US$16.99 with Free shipping.
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 
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