True RMS (TRMS) vs Averaging Multimeters
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- Опубліковано 3 січ 2017
- This video explains the difference between True RMS meters, and Averaging meters. It will also help you decide if you need a TRMS meter.
Here is the link to the video on TRMS Clamp Meters
• True RMS (TRMS) vs Ave...
Meters used in this video:
Amprobe AM-510 - amzn.to/2O9TkyK
Fluke 175 - amzn.to/2OdzPVX
Klein MM5000 - amzn.to/2BTJNcB
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I was raised with analog meters. I was so excited to buy my first digital meter. On day I was working in a server room with multitudes of technology and was getting hinky readings. I went out and got the analog and was getting the readings I was expecting. I didn’t think True RMS would make that big of a difference. After that I saved up and always bought True RMS thereafter. When you don’t want to take a chance it just isn’t worth not having True RMS; in the grand scheme of things $20 even $50 isn’t much given how long meters last. I still have a 50+ year old analog and have a 20+ year old digital. 10 years is nothing to these things and well worth investing in quality. I prefer Fluke myself but also run Ideal and AmpProbe.
Great video you can not explain it any better. Thanks for your time!!!
Why in English plesr tell in to hindi or transleshoin app in you tube
@@hemantnemade3677 Why in English? Because that is the language that the guy knows.
Excellent concise explanation with no useless talk.
This is quite the instructional set up! You were so detailed and your explanation was spot on!
+MultiMeter Channel With this video and your TrueRMS Clamp meter video, you've made the clear distinction as to whether or not it's useful for me to get the TRMS meter I was considering (and on checking out prices, if it's worth the cost increase I was looking at paying). I love this kind of video. Simple descriptions, leading to a conclusion that makes total sense. You've got a subscriber!
awesome video! thanks for this explanation, I know about this issue already but seeing the sine wave forms and showing the examples of dimmers and UPS was really helpful.
Excellent explanation! The multiple examples really help drive home the differences. Thanks for the video!
This video was done exceptionally well! Thank you so much for sharing this. Just what I was looking for.
this help me answered what multimeter to get at the shop today. I don't need true rms.. thank you for the clear advice.
Thanks for putting in the time to assemble all that apparatus to explain RMS vs TRMS
I want to thank you for this video, as it really put the explanation in a visual sense, I love me some demos!
This is the best video I've seen on True RMS. Thanks so much for making this.
this video is easy to understood👍
great video, thank you for taking the time to make the display and explain.
Excellent explanation, very practical and the visual demonstration really helps explain the differences. Thank you very much.
You do a great job of explaining your points. Good vid, thx!
The first 25 seconds already helped me :)
Great video.
Tysm for this video! Was looking this up because of iot hardware hacking and came across the term true RMS meter. I had no idea these existed. Great video!
thank you for this video! I appreciate knowing all this now, since I'm so hung up on getting a true RMS meter to replace my current meter.
Thank you very much for this very easy to understand video. Great demo!
Great videos. I have learned a lot. You are a great teacher. Easy to understand. Thank you.
Very clear and easy understandable explanation. Thanks!
This is the best demo of a trms meter.
Thanks! You just saved me $70 bucks on a clamp meter to put towards my oscilloscope fund :D I still want a clamp meter because they are super convenient.
Very informative, as well as the clamp meter video. It helps me visualize what I’ve read about. Keep the videos coming. I hope you don’t mind if I leave links to your videos when I get a more technical questions.
Good basic video. A lot of people have not taken calculus and do not understand the conversion of an AC sinewave voltage to an equivalent DC value. The average of a sinewave is zero (has an equal amount of area above and below the abscissa (x-axis) ). However it is still doing work, so the mathematical conversion using the definition of RMS equates it to an equivalent DC value. The average of a sinewave is 0.637 times the peak (taken over only half a cycle). Again, if you took it over a whole cycle it would be zero. The RMS of a sinewave is 0.707 times the peak. These are 2 different results based on mathematical manipulation. The RMS value is used for true power. I would also like to mention that a TRUE ROOT MEAN SQUARE meter should be TRMS AC+DC to include any DC offset for a total value of voltage or current.
Fantastic explanation and presentation with real life home/office use bulbs...thanks.
Well explained...
Thank you for explaining this. Great video.
.. will definately take a look at some of your other videos after this one.. well done well explained, and easy to comprihend
Very nice presentation on this functional piece of information ...
very nice explanation...before watching this video m bit confused between true rms and average value multi meter.. thanks 👍👍
Thanks for explaining. A standard DMM is fine for the average person doing electrical work or basic electronics. I think unless you have a specific need, or lab use, it's not necessary. Although I have seen some cheaper True RMS meters available, that go by the description 6000 count or higher.
Really nicely set up video!
Very good explanation and demonstration.
Awesome video. Thanks for enlightening us.
Very good video....simple and clear explanation.....thank you
Very informative video. Thanks for uploading
Fantastic presentation. Thank you
Wow, excellent presentation! 👌
Very good video. So the non-true-RMS meter assumes a sine-shaped signal to simplify calculations and that's the reason it gets it wrong when we change the signal shape to anything other than sine. I don't even understand why such devices exist. In this day and age, what's the cost of adding a chip capable of squaring a few values and then calculating the square root of the mean? 10 cents of a dollar?
Easy to understand, thank you.
Great info and excellent presentation. I’m now subscribed.
Thank you for sharing your knowledge.
Thanks for the explanation!
Great explanation. Thanks!
By examples. Perfect! Really nice, thank you
Thank you for the very informative video.
Great video!, thanks for posting it
Thank you, great video, I learn a lot.
Good info Sir..many of just know True rms but doesn't what them means,hope by watching your video,they could know what they just talk about all this years..
TorQue WreNcH huh?
This is a great video, thank you. I especially love all the extra visual help and all the use case coverage.
atm though, i'm looking at a 32$ multimeter, and a 33$ trms multimeter. i think they removed the "relative" button the the trms one, but from what i understand that button doesn't do anything that just a little bit of short term memory can't make up for.
Thanks a lot. Your video was very helpfull.
Great demo and explanation.
Nice vídeo, congratulations !
Great explanation !!
Huge difference in distorted wave form! Wow.
Thank you, sir. You saved me about 30 bucks.
Very informative. Thank you Sir.
Good one. Liked the yellow meter though)
When you get surge spike or more into current measures trms is only way to go. For rest rms ones do fine for bench jobs.
Great video much appreciated
Good video!
Wow! Nice..,clean explanation..,thanks
It was a great video... thank you 🙏
Hmm great explanation. Any idea how the RMS meters will react if using a capacitor on the leads? Will a cap make the readings more accurate? Or do nothing at all?
Thank you for the video!!!
Great video!
Well presented. Am better for the task now.
Hi,Thanks for the review.
Is Rms a must for automotive repairs?
I'm installing roughly 50 linear LED lighting fixtures on 3 circuits in a 2 level parkade. Am I dealing with a distorted wave form here, will I get a much more accurate amperage draw reading with a True RMS meter?
Nice vid! Thanks!
Nice vid, thank you very much for explaining. :-)
Cool vid chap thanks for the info as i did not no this
Nice demo.
Very interesting and well explained! I would've assumed all AC was the default pure sine-wave form. It's interesting but understandable that battery backup 'simulating' AC is just DC but alternating digitally. (Like binary, but 3 stages: -1,0,1).
However how come the dimmer switch very unnaturally modifies the AC wave by chopping it weirdly, instead of proportionally reducing the peaks in the sine wave? Is that why some of them don't play nicely with CFL/LED bulbs, causing flickering?
Leuel48Fan
Back “in the old days”, when we only had incandescent bulbs, dimmers were Rheostat’s that just varied to load to the filament in the bulbs. First generation CFL bulbs were not designed to be dimmed, because they had a electronic ballast that needed the full 120 Volts at all times, and it was felt dimming was not needed to save energy. It took a few years for CFL and switch makers to decide on a method to dim. Varying the duty cycle was deemed to be the best way.
LED bulbs also have electronic circuitry to convert the high voltage AC to the low voltage DC the LED’s need. These could have worked well with the old Rehostat’s, but they were also designed to work with all the CFL dimmers already on the market.
😀👍🏿Good Stuff,GreatTips
Nice video! I have one that goes into some additional details if people are interested "True RMS Multimeters - How They Work and Why You Need One". I would disagree that the 'average' person doesn't need a true RMS meter. I think the average person is exactly the type of person who needs one. An expert won't be misled by a false reading from a non-RMS meter.
I recently tested a number of meters especially for their True RMS capability and AC frequency response. One thing I found out is that most manufacturers do NOT put the AC frequency response in their online summary specifications. Not even Fluke, who doesn't even have it on their big comparison chart. You have to go into the actual manual to find out, and sometimes it's even hard to sort out there. Also, a frequency measuring (frequency counter function) specification does not apply - that is an entirely different thing. One that tested quite well for a low-cost meter was the OWON B41T+. It is a True RMS meter with an AC frequency response of 40 to 10,000 Hz. For example, for a 10 kHz 20 Vpp sine wave which should read 7.071 Vrms, it read 7.042 Vrms. For a 10 kHz 20 Vpp square wave that should read 10 Vrms, it read 9.992 Vrms. That's pretty good for an under $100 meter.
Great job.
Great content 👌 👏 👍
Good demo. tu +sub. Maybe you could do a demo on how to test and confirm if multimeter is a true RMS or not.
Actually, a residential electrician would need a TRMS meter to install, adjust and troubleshoot circuits that include dimmers, UPS, and loads with high speed switching.
This is vary well put , non sign wave inverter and pwm power supplies needs RMS
Excellent info
Hi. I got the idea about true rms but i still would like to ask that i deal with 5v , 12v led strips and i need see amperage and voltage along long cables often. And i use basic microcontrolled pwm mosfet dimmer for this project. And i just deal with DC only. Do you think i need true rms multimeter?
Very nice info ... Can you confirm if the true RMS and non true RMS will measure the same current in refrigeration compressor
Thank you
Awesome !👍🏻
Thank you !
Great comparison. I guess a home AC generator would be s good item to test with a true RMS meter and scope.
A beginner question: This RMS thing is only for AC?
Yes.
It was good , Thank you
What is that big orange one?
What oscilloscope is that even? Looks really nice, is it handheld too?
Ufff exelent vídeo tks Mrs, 🎩♿
Thank You
Cool, thanks. I just ordered my first True RMS (TRMS) digital multimeter (w/ temperature for GPUs and CPU measurements), the Habotest HT116 (Kaiweets the pioneer of the smarphone looking w/ amazing colored LCD, smart multimeters they say make the Habotest HT116 and also the AstroAI MUS10KRD which is the Kaiweets KM601 they say), I can't wait to use it.
God bless, Rev. 21:4
Thank you for the nice video.
I need to measure voltage / current of a Variable frequency drive, what type of meter I should use? Is it true RMS or another type?
He left a link in the description that shows clamp meters and the difference trms and averaging meters have. In our filed trms is what we need to measure Hz through the amp clamp on vfd’s
Bold a skid, I'll be in verter's and mark. Need to know if they're pure sign wave modified sideways or square sideways made up a civil scope today.
To do that.
Thanks!