Modified UNI-T UT210E AC/DC current clamp with analog output
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- Опубліковано 15 жов 2024
- In this video I describe and show the end results after adding an analog output to the UT210E clamp. The analog output is intended to provide a means to monitor the current waveform with an oscilloscope.
Further information about my homemade power monitor may be found here:
• Measuring AC power wit...
• Improving the AC power...
• P3 International Kill ...
Further information on the UNI-T UT210E may be found here:
www.eevblog.com...
Love your info and detailed videos! Exactly the kind of stuff a Ham Radio / home brew geek loves to see...and try.
Very nice video. Excellent value for money, and now with this extra mod it is even oscilloscope compatible! The only thing left would be to make it wireless via bluetooth or WiFi.
+Javier Palla Lorden Thanks. A few people are looking into this on the EEVBLOG site. It uses a fairly common controller so supporting serial communication may not be too much of a problem. The lack of room inside the case and only having the two small cells may be a bit of a problem.
Can i see the circuit diagram???
You seem to play with all of the things I want. I've been looking for a decent current clamp that can do DC. Thanks to you as well, doing ebay searches for Hioki has paid off as I was able to pick up a nice laser tach from them for cheap with analog output which I'm looking forward to playing with. I'm planning to make lots of videos soon on varying topics with mostly very unique things being shown which aren't on youtube in any other form. Not on this account though. ;) You're definitely a big inspiration so thank you as always!
+whatlions "I'm planning to make lots of videos soon on varying topics with mostly very unique things being shown which aren't on youtube in any other form. Not on this account though. ;) " Looking forward to seeing what you come up with. Hopefully you will be willing to share your new account name.
Hey I cant find any Infos at eev's Blog about that Mod. Where can I find the Details you were Walking about ? Thank you. (Maybe you could just tell us the Page of the Thread)
Yeah its a big long thread and frustrating that the first page shows it done, but no mention by the OP of where to hook it up. Anyway I found on Page 13 contributor Ivan7enych has a pic where *he* has connected the signal and ground wires, *ADDITIONALLY* one of joe smith's videos he says he attached the scope to R7 to measure the output (I haven't done the mod yet so not sure which one is right or they are both the same thing electrically speaking). I'm sure it will be somewhere else in the blog, but I just wanted the answer too since it was taking so long it was almost like I could have found it myself on the circuit faster than searching the damn thread.!
*Vielen Dank* , hab Dir ein Abo dagelassen. Wie hast Du den Oszi-Anschluss innen verdrahtet?
I tied into the instrumentation amplifier and added a buffer. A few people just added a direct connection.
Do you know the type of people that really want to learn and click on a video from a really knowable guy and then understand nothing (like me)? :-)
Not to have to "break" the circuit to get a idea of the amount of current that are flowing, sounds great.
I could invest in a meter that costs the same as a good beginner oscilloscope, but that would be way over my head.
My questions to all are:
Would this clamp meter be ok for my beginner use on my small projects?
What was wrong about the frequencies?
It is a very good project
Well done
Is there a video explaining how to create that output at the bottom of the UT210E?
Not that I am aware of.
@@joesmith-je3tq YOU did this improvement, please, could you share how you did that?
@@JohnUsp You don't need to state the obvious. I KNOW I made these changes.
@@joesmith-je3tq LOL... OK. Would be nice to have an explanation about how to do that. Thanks.
Do you have any more info on that current clamp/amplifier you built at 5:58 ?
It just a standard LEM part.
Nice mod, is there a mod for this meter to measure current with the pen probes for pcb debugging?
Not that I am aware of but meters are cheap.
great video and idea about this, can you give us more information how can we modified ours clamp meters?
In the description, there was a link to the forum. I posted a fair amount of data there.
Nice Video, Thanks you Mr. Joe Smith. I also have UT210E. this modified is very interest. because, when i need measure current. i use my 1 or 0.1ohm shunt resistors. it's little bit tiresome work to me everytime.
Thanks. I use shunts, transformers, clamps, LEMs depending what I am trying to measure. The UT210E works very well for automotive. The one I have modified has been a nice addition to the lab.
This is a briliant idea, i'll try it too
Thank you.
Good for you! I need that for my car. Now I don't have to figure it out myself. thanks.
Hey Joe. Please, could you explain how to add this analog output? Thank you.
While you could have read one of the many comments of people asking the same question or taken the time to read the FAQ, I guess you feel you're special and entitled to your own personal response. Sure, I could explain how I added this analog output.
@@joesmith-je3tq In the description the 3 videos are about your lab changes for power measuring and the link "Further information on the UNI-T UT210E may be found here" is a 33 pages (up to now) forum thread. I already read many pages and I didn't find any specific information about that. I'm not more special, but I believe that your change is unique and will help a lot of people if well explained.
@@JohnUsp And certainly your beliefs and opinions are valued.
Please what's the band width of current sensor
Sorry, it's been far too long since I had played with this meter. Easiest way to find out may be for you to measure it.
I hope you are making some money for recommending various products, such as this unit. I will buy one, and use your provided link- with the hope that you are credited for the sale.
Correction - the link u provide is not for a sales website (e.g. Amazon). You should be getting some financial credit for the sale of devices you feature.
can't find the mod info on eevblog
Where is the SMA mod tutorial available? I can not find it.
I assume you followed the link provided in the description and read through that. I also slow the front end in the last video I made for this meter.
That is really long thread. I'm half way thru. Interesting things about moding operating parameters. I will watch the last video.
At first I couldn't find it either. Here it is: ua-cam.com/video/beXnFpPPwg4/v-deo.html
I am interested in UNI-T UT211B, is that any good?
Sorry but I can't be of much help. I have never looked at one.
from where is the analog output ?? my UT210E has not this outputs
The analog output is in my UT210E. Your UT210E would have one too if you modified it but I suspect you have not and this is why you don't.
i might be good for automotive use,usually dc or low Hz
WHY NOT USE THE LEADS?
WHY NOT LEARN YOUR PC HAS MORE THAN CAPS? Try the Caps Lock button.
Use the leads, they're very useful. It saves you from carrying around another multimeter.
What AWG do you think you could fit through the clamp?
+John Doe I think 66 AWG would fit. Because I have no idea about the jacket thickness you are using, the best information I can offer is that it appears the jaws would accept a about a 0.7" OD.
+joe smith Hello . I'm from Russia English do not know much, I wanted to know why you have it modified the current clamp, I wonder, can you tell and show the next video to disassemble unit 210e and the show did, that is, the wiring, and do not listen to others and not pay attention to the different saying in your address, it's your channel, and in the right of you. Thank you
+Git Up I modified the clamp because I thought it may be useful at times to use it with an oscilloscope. I described the pins where you would need to connect on the EEVBLOG site. The link was provided in the description.
Yes yes, but how do us humans use it to check if the wire is hot or ground?
I doubt you would find many trained humans using it for this. You do have the NCV mode.
i would work good for automotive use where hz is usually very low
You're doing a great job with these reviews, however it seems that you don't understand that some of your viewers may not be as well prepared as you are and sometimes you just tend to forget that Fluke costs about 4 or 5 times more than Uni-t&Co. I hope i didn't made any grammar or typing mistakes because i saw that it bothers you so much. Remember: not all of us were born in the US of A.
Greetings from Romania! Keep up the good work
P. S I do use the leads and they're very useful. Someone that does field work and not only lab, appreciates them a lot.
I was not aware that Fluke makes a clamp meter that competes with the 210 and was only 5 X the cost. $150 for a Fluke DC clamp that reads to a mA sounds like a great deal. I have damaged a fair number of cheap UNI-T meters because of their poor input designs which is why I have no use for the other functions on this meter. It makes a very good clamp for the price but that's about it. I was not aware I was bothered by typing mistakes or grammar. I do run into problems trying to determine what people are asking from time to time. I suspect it is partly due to the translation compounded with people not always knowing themselves what they are trying to ask. Normally I try to answer questions people have.
Well... I saw how you answered to the guy that wrote with caps and i thought that a grammar mistake must be way worst.
However.. I also have a Metrix Mx655 clamp (300€) and i just think the uni-t is just fantastic compared to that one. Don't get me wrong, i have nothing against Fluke or Chauvin Arnoux or any other brand, but it's just normal that they work with those price tags. On the other hand these cheap instruments that actually work are a very nice surprise.
Next week i'll test the multimeter side compared with a Hp 34401 that i have in the lab and see how it pans out . I'll let you know.
I assumed with the caps lock and question they were trolling was all. I look forward to seeing your results on how the two meters compare. Normally, I find even the cheapest meters are pretty accurate when I first get them. I've never looked at the 210s I have besides the current which I have been impressed with for the price. I dare say the 210 is my favorite UNI-T product I have looked at.
joe smith
Hello again, I've done some testing today: Uni-t UT210E vs Metrix Mx655 multimeter functions
- Reference instrument - Hp34401A
-Dc power supply(0.05V-40.0V)Instek Psp-405
-Resistors 0,25w 1% (10, 102, 4.53k, 48.7k, 681k)
The Mx655 has a resistance range that goes from 400 to 4000 ohms, so that was almost useless. First i tested the two clamps and the Hp with the same leads and it made no difference, than i used they're own leads. The measurements were made with the resistors and source in parallel with the Hp - The clamps one at a time.
R=10ohms-Hp(9.994)Mx(9.9)Uni-t(9.9)
R=102 ohms-Hp(101.578)Mx(101.1)U
ni-t(101.6)
R=4.53k-Hp(4.518k)
Uni-t(4.52k)
R=48.7k-Hp(48.661k)
Uni-t(48.7k)
R=681k-Hp(684.06k)Uni-t(684k)
VDc measurements:
S=0.05V-Hp(0.88,5)Mx-out of range Uni-t(0.88,5)
S=0.28V-Hp(0.308)Mx(0.3)Uni-t(0.308)
S=1.35V-Hp(1.379)Mx(1.4)Uni-t(1.381)
S=8.28V-Hp(8.314)Mx(8.3)Uni-t(8.32)
S=16.52V-Hp(16.561)Mx(16.5)Uni-t(16.58)
S=26.4V-Hp(26.458)Mx(26.4)Uni-t(26.4)
S=40.0V-Hp(40.026)Mx(39.8)Uni-t(40.0)
So far i learned that the Instek on-board instrument is rubbish :)
In next few days I'll do the rest of the comparison- (50-250V Ac&Dc range)
A little nice cheapie and worthy HVAC toolbox item. LOL…...
+TheOldmankk It's the only UNI-T product that I have actually recommend but only as a clamp. For $40/ it's really pretty good.
+joe smith -- I bought one recently. It's in the lab at work, but I haven't gotten around to testing it out yet. We can get fairly decent accuracy from our equipment from uA through to 100 Adc / 120 Aac. I will post the results on EEVblog forums when I get them.
+boggisthecat Looking forward to seeing your post. The probe by itself appears fairly accurate. Even with low DC currents. To be clear, when I mention the inaccuracy, I am referring to buffering the raw signal for the analog output. I thought about adding a couple of trimmers to at least set the gain and offset.