True RMS (TRMS) vs Averaging Multimeters
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- Опубликовано: 6 окт 2024
- 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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Best video on RUclips explaining the difference between averaging meters and True RMS meters. BY far.
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.
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.
This is quite the instructional set up! You were so detailed and your explanation was spot on!
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?
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.
+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!
this video is easy to understood👍
this help me answered what multimeter to get at the shop today. I don't need true rms.. thank you for the clear advice.
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!
Excellent explanation, very practical and the visual demonstration really helps explain the differences. Thank you very much.
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!
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.
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.
Thanks for putting in the time to assemble all that apparatus to explain RMS vs TRMS
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.
Well explained...
This is the best video I've seen on True RMS. Thanks so much for making this.
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.
very nice explanation...before watching this video m bit confused between true rms and average value multi meter.. thanks 👍👍
Great videos. I have learned a lot. You are a great teacher. Easy to understand. Thank you.
This is the best demo of a trms meter.
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.
Great education videos! very straight forward explanation. Thank you for your time!
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 $100 meter.
This is a great video, thank you. I especially love all the extra visual help and all the use case coverage.
atm though, i'm looking at a 32$ 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.
The first 25 seconds already helped me :)
Great video.
.. will definately take a look at some of your other videos after this one.. well done well explained, and easy to comprihend
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?
I want to thank you for this video, as it really put the explanation in a visual sense, I love me some demos!
Fantastic explanation and presentation with real life home/office use bulbs...thanks.
Very good video....simple and clear explanation.....thank you
Very clear and easy understandable explanation. Thanks!
Great demo and explanation.
This video was done exceptionally well! Thank you so much for sharing this. Just what I was looking for.
I've never heard of an averaging DMM referred to as RMS meter. To me RMS *IS* "True RMS". If it's not RMS then it's an averaging meter.
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.
Thank you, sir. You saved me about 30 bucks.
great video, thank you for taking the time to make the display and explain.
Very good explanation and demonstration.
What oscilloscope is that even? Looks really nice, is it handheld too?
Really nicely set up video!
Wow, excellent presentation! 👌
Fantastic presentation. Thank you
Thank you very much for this very easy to understand video. Great demo!
Great info and excellent presentation. I’m now subscribed.
Thanks for the explanation!
Thank you for explaining this. Great video.
AC is generated as a single frequency on the power plants. True RMS are able to pick up those higher frequency harmonis which are part of any non sinusoidal waveforms found on electro/electronic machines and devices.
By examples. Perfect! Really nice, thank you
Great comparison. I guess a home AC generator would be s good item to test with a true RMS meter and scope.
Great explanation. Thanks!
Great explanation !!
Thank you for sharing your knowledge.
Huge difference in distorted wave form! Wow.
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.
You do a great job of explaining your points. Good vid, thx!
Very nice presentation on this functional piece of information ...
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?
This is vary well put , non sign wave inverter and pwm power supplies needs RMS
Good video!
Awesome video. Thanks for enlightening us.
Great video!, thanks for posting it
Very nice info ... Can you confirm if the true RMS and non true RMS will measure the same current in refrigeration compressor
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
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?
A beginner question: This RMS thing is only for AC?
Yes.
If you decide to use a additional current clamp or probe with the multimeter then it makes sense to have a true RMS multimeter
Nice video and equipment. You did however negate your contention with your examples. Noise,dimmers, VFDs,etc.are everywhere now. On occasion I have encountered a bad noise filter connected to a noise sensitive control.👍
Very informative. Thank you Sir.
Cool vid chap thanks for the info as i did not no this
@MultiMeter Channel . - what is the device called that displays the SineWave form? I would like to get one of those
Uhhh.... an oscilloscope.
Let’s try this again.
What is the make and model of your oscilloscope?
@@wesleydavis8595 not sure you would it’s approximately $4000.00
@@MT-rg4dm Ouch!
Nice vid, thank you very much for explaining. :-)
Great video much appreciated
Easy to understand, thank you.
Very informative video. Thanks for uploading
Wow! Nice..,clean explanation..,thanks
Thank you, great video, I learn a lot.
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.
Nice demo.
Well presented. Am better for the task now.
It was a great video... thank you 🙏
Thank you for the video!!!
Excellent info
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.
Hi,Thanks for the review.
Is Rms a must for automotive repairs?
Ufff exelent vídeo tks Mrs, 🎩♿
Thanks a lot. Your video was very helpfull.
Great video!
Nice vídeo, congratulations !
Thank you for that...
Nice vid! Thanks!
Nice demo, really. Here in the practical world, I'm looking at countless reviews fussing over "features" of marginal or even dubious value. In my case, I need to measure the forward voltage of hi powered LED's and so the highest voltage that a meter supplies to measure diodes is critical - it took forever to the right meter. Another is the ability to override or modify auto power off - to me it's insane that this is not a line item on every mm "feature" list. OR, how about it's water resistant level, a line that states it's IP rating.
Joe Greene
The hard one to find is forward voltage drop, and water resistance. Most of the Fluke and Klein meters can go to 3.2 Volts for diodes. The Klein meters have the water resistance right on the package, no need to even look through the manual.
I get tons of requests for reviews, so I am going to start doing those, instead of just tutorials.
@@MultiMeterChannel The Fluke then cannot test the say, the cree xhp70 (forward voltage 5.6) but the $35 meter I have on order claims it easily can (forward voltages up to 12).
Joe Greene
On rare occasion I find a meter that can go to 9V, as that meter uses a 9V as it’s power source, and they don’t need to use an internal boost converter to take the 2 AAA, to a higher voltage just for a diode test. But, that is very rare. Never saw one that went to 12V. What model is that? I may need to order one myself.
@@MultiMeterChannel First, I've NOT PROVEN this (as I stated, the meter is on order). It's the UNI-T UT89XD (some utuber said the, "...D" stands for "Diode"). It's power by four (4) AAA's - that may be the HINT that the MRTOOLSHOP banner ad I am looking at [on my other screen] is, in fact, accurate (in order to power the needed boost). The ad states, "LED Measurement UT89XD Can Output 12V/5MA Voltage". I tried to find a manual to source the representation. That said, I'm optimistic.
😀👍🏿Good Stuff,GreatTips
Awesome !👍🏻
When one needs to measure different waveforms and get precise reading it is time to buy a scope. Meters aren't precise enough or cost too much, beside they don't show waveform which is very revealing.