How to use a multimeter for advanced measurements: Part 2 - Current Probes / clamps / transducers

[@thomasbrown9402]

Viewing 10 years after you posted... still incredibly useful, thanks

[@robertkelly5484]

Martin I must say the detail and effort you put in to your videos are outstanding i enjoy the relaxed way you explain very complex things even a slow wit like me can follow and understand well done

[@varunadesilva2930]

Very good, I like your not hurried pace to explain even the very basics.

[@mjlorton]

+Varuna Desilva My pleasure, thanks for your post.

[@meninpapin]

@@mjlorton hi,martin,do you have any videos on cbi earth leakage breakers and how they are wired in conjunction with a main switch

[@joshuab2450]

I have learned a incredible amount of electrical info from your videos! Your so precise and detail oriented that even a slow learner like me can take in the info and apply it! THANK YOU SO MUCH FOR SHARING!

[@mjlorton]

Ok..if you look at my Amazon Store (see video details) there are a few cheaper clamp meters for around $40-$70. There is one on Amazon for $21 but I would not waste your money as the rating does not look good. Thanks for watching and posting.

[@kaynd]

On your video I see ecactly the same thing I am experiencing. At 17:55 check how long it takes to settle on the current reading when you switch on the load. That slow response not only takes any inrush current measurement out of the question, but also dampens any measurement of a varying load. Then @ 21:24 check the snappy response of the MT22 working in conjunction with the same current clamp. Thanks for the reply. I may find something more interesting to post on your forum in the future.

[@mjlorton]

Very odd...I wish I had an 87V to check this. If you post the question on the forum you will certainly get feedback on the issue. Thanks for the post and watching.

[@iwantosavemoney]

these videos have helped me alot in my small solar projects. i would like to find more in formation on small circuits and resistors im looking to build a solar heater with a small fan and a snap disc and a small solar panel to power it all with no batteries. im also looking into building led lights for small power consumption. thank you for all your help

[@Sam-w9des]

The best channel on you tube in this category. Thanks

[@hawasawayahawa]

I don't mean to be negative but I don't know what kind of a person would be intelligent enough to enter a video such as this yet too ignorant to recognize the value of this video and give it a dislike. Really, a great video.

[@WeldersOnly]

Great videos, I learned more about testing diodes on the last video then our curriculum on dmms at school.

[@dynadude56]

Very informative, as usual. I appreciate the layman's language as well. Beginners can get lost trying to keep up when too many tech terms are used. They can be learned at your leisure once you understand the process.

[@mjlorton]

If it's for educational purposes then yes, certainly you can. I would just ask that you please leave the video intact with the banner so people know it's my video and KZbin channel. Please do not upload it to another channel or website. Cheers, Martin.

[@AmreshTripathi]

Very nice, thank you so much. I am a new hobbyist and have got all stuff ordered from Amazon. I needed to know all this.

[@mjlorton]

My pleasure, thanks for the feedback.

[@robertarguello1115]

Hello, Why wasn't the FLUKE 177 used for this demonstration?

[@sumakfarm5538]

Your explanation is so great that is better than few teacher I got on my school. I'm on HVAC/R, but when we get to reading multimeter i did not get it until I watched your video. Thank you body.

[@robertorochamartinsrocha7041]

Thanks. Since I started watchingyour videos I learned a lot . Thank you again , and please keep your good work . Good luck.

[@mjlorton]

Thanks for the feedback.

[@20thcenturyboy85]

Thanks VERY MUCH for these wonderful learning videos.

[@ForeverMods]

Another great comprehensive tutorial ! I use wireless power meters various brands.. I then can connect them to a computer and download all the data, as they offer a very large memory storage bank. So I guess for solar power they would be really great, maybe not for accuracy, but surely for trend. Thanks once again for sharing the wealth of information! And you call yourself amateur !! Wow I'm at kinder garden than LOL

[@mjlorton]

Thanks! I appreciate your feedback.

[@Kamal-qc2qf]

Sir pls share where can I buy adapter for hall effect probe BNC to banana

[@JojoCruzSolano]

sir this fluke 1400e 400a ac clamp is also compatible to fluke 115BMax

[@mjlorton]

No problem...glad to help. Cheers, Martin.

[@Gunners_Mate_Guns]

Your instructional videos are outstanding, Martin.

[@PedroPortelareis]

Great Video, Martin! Do you think we can track down a current AC leak problem of an house using a clamp? (Maybe with one current transducer with a resolution finer than 0.5A?)

[@daikaiju20]

Martin have you made vid. on what/how "Frequency" setting is used on a multimeter? i can not figure out how it is used....

[@pravnik66]

So, if I want to measure DC current, like 30A, the best thing would be to buy a clamp multimeter that can do DC current? I'm looking online to buy one, like up to 20$ (since I will use it only occasionylly) but none of those has DC current as a option... Thanx for the video

[@condor5635]

Great video! Enjoyed it. I bought an Amprobe line splitter which makes using the Fluke clamp very easy for any given appliance. Costs like 20 bucks. Thanks

[@1_D333]

Don't use the Rel-delta mode on 87V. You got the concept wrong in the use of that button, it's not for zero-ing but to save the last reading and automatically add or subtract it to the consecutive reading. When under load that meter will display the correct reading even though it's not zero at idle. Nonetheless informative video on the types of amp clamps you use.

[@franciscolagunes7061]

how do I measure miliamps on a proximity sensor with 4 wires using a normal multimeter without the clamp? I know it has to be in series but the 4 wires confuse me I have the positive , negative and two more that say load, where should I put my leads to take the measurement? I know the range should be between 4 to 20 ma , pls give me some orientation

[@kaynd]

nice demonstration. The thing I don't get, is why the AC mV range on the 87V responds so slowly... I have bought both 87V and a i410 AC/DC current clump for some months now and i still can't get over that slow responce in AC current mesurement... The DC mV range is properly sesponsive so DC Amp measurments are fine. Granted, I didn't buy the 87V to use it only in conjunction with the current clamp... But it strikes me... having to buy another multimeter in order to have proper ACmV response.

[@Richo12ful]

Great Videos and very useful to learn from, think I learnt more watching this video than I knew about electroics, well on this topic anyway Martin appreciate you posting these, if I may ask a question about a PCB that comes out of a old 8mm movie projector, It supplies power to the micros witches that run projector, and controls speed & Direction of the DC motor. It is getting 22volts on it's input terminals, but not outputting anymore than 2 or 3 volts on it's outputs. I can see no obvious damage to board or Cap, Resistors etc well obvious to me, If you have time, maybe you could look at the short video I have uploaded and suggest what I should be checking first. 8mm Movie Projector Speed control board no power coming out Thanks Phil

[@jeffanderson1311]

Hi Martin, According to the fluke manual for the 87 V, zeroing the meter in the AC voltage ranges is improper becuase a it says a small residual voltage is expected due to the characteristics of RMS measurements. I don't have technical knowledge of why but that is what it says in the manual

[@jeffanderson1311]

It is in a section titled "zero input behavior of true rms meters"

[@jeffanderson1311]

It says there must be a minimum voltage present to guarantee accuracy, for the fluke 87 V, it is 3% of the range, or 18mV

[@mahoa9418]

mjlorton Martin ;Good afternoon , Thanks a lot >............ this video was really helpful!... Very educational and well explained. I always benfit, from you instructions > I really appreciated the time you took and your explanations. . . Maho A > a civil aircraft Engineer and FAA, A&P / IA Inspector . NDT/ NDI level II Inspector .

[@myyube81]

Mr. Martin, Great video. just a thought, if you had a spliter ...than you wouldn't need to cut the wires....

[@mjlorton]

Thanks for the info and the feedback.

[@NobbyRon]

What would be your reaction on the danger of the frequency of 50 Hz AC where it concerns the consequences for disturbing the human hart rate? Kind regards and thanks for sharing your professional knowledge.

[@bangkokhomes]

Hi Martin, great video. When taking current measurements should this be on the load wire or neutral, or does it not matter. Thanks again

[@eudude9203]

Great videos, i'm learning a lot from these. From the beginner series i gained very much. Is there a part 3, or is a successor to this tutorials ?

[@mjlorton]

Thanks, appreciate the feedback.

[@eccosselion]

Thanks for a very good tutorial,enjoyed very much

[@Selcuk_e]

I realy wonder that what is the maximum frequency measurement of the fluke 80i. on datasheet it say that 100khz but I think it can do more. Please can you check it for me and tell me. thanks,

[@ramzeencuncheer3020]

Valuable informations.Thank you.

[@roycardey1562]

I have an outdoor thermometer sensor. It stopped working so I disassembled it and found the bad part is labeled x1 on the circuit board. Can anyone tell me what an x1 is? Any help wou It apparently has something to do with wireless communication and this is what I have a picture of. Any help would be appreciated.

[@wojtekwozniak9272]

Ok, so you can plug clamp transmitter into any kind of multimeter? For example I own Aneng 860B+, plugging something like MASTECH MS3302 clamp will work?

[@Radimirtje]

Very educational and well explained. Thank you very much, and please continue to good work!!

[@niceguy60]

The fluke 43b and fluke 125 series will take the clamp measurements and convert straight to amps

[@stephboeker7835]

Volts vs. mV / Amps vs. mA What is the difference ? I mean to ask, which is larger : V or mV ............ Amps or mAmps ?? Is a volt 1/1000 of a mV or is a mV 1/1000 of a volt ?? Same question for Amps ??

[@comingapart]

wheres' part 3? i'd like you to go over shunt current measurments

[@roycardey1562]

I want to send you a picture that I have a question about. How could I do this? Thanks

[@heinpyae2974]

Can I download your video? Because I want to share to my students in Myanmar .

[@mjlorton]

Baie dankie, ek waardeer jou vriendelike woorde.

[@Spoolz07]

Excellent video as always.

[@mjlorton]

+Spoolz07 Thanks!

[@savator408]

what is the length on the i400 clamp?

[@Jay11111989]

I have a question...understand I am way out of my element here. I understand that it is possible to hook up the Fluke 87 to a tablet or laptop and measure/graph current usage over time? Is that so? How does one go about doing that? I have a persistent surcharge on my electrical service for a usage spike and I can't understand where it's coming from. I would like to be able to pinpoint what time of day this spike in usage is happening and then start going from building to building on the property if necessary to discover the source. Can you help me? I was recently given a Fluke 87 III but I assume it's pretty close to the same as the V you've been making your videos with. Thanks in advance, Jason

[@JCunningham21]

divide by 10 or move the decimal point over to the left for every 10mV/A

[@mjlorton]

Type "multimeter review" into Google, you'll see one of my videos near the top and a website call "robotroom(dot)com. The gent there provides some very handy info on little solar powered projects.

[@NicholasAarons]

Great Video Dude. Keep up the great work. Nick.

[@Ullrich88]

another great informative video...thanks

[@paulconroy4861]

Great video very easy to follow

[@ClownWhisper]

I have a question with regards to resistance. I'm a robotics engineer that means I was a field engineer I don't have a degree in engineering they just called me that LOL. Recently now that I'm disabled I've been using a kiln because I've taken up pottery to try and occupy some of my time. Well, it came time to build new coils element if you will for the kill and they have to be at 10 ohms 16 gauge kanthol A1 wire. Unfortunately, I only have a very cheap consumer-grade multimeter it probably only cost 20 bucks then I have noticed that when I wrap a coil I do it on my lathe and I take it off and measure the resistance and start trimming it to get down to 10 homes it starts out at like 12 ohms and then counts down in eventually stops is that normal? Or is it that just the mark of a cheap multimeter? I'm so sick of having a crappy multimeter that I just ordered a lower-end fluke on Amazon hopefully this will allow me a little more Peace of Mind even though it is a lower-end one. At home I'm not going to be troubleshooting board-level crap so I don't need an expensive multimeter i just need a decent quality meter any tips?

[@jon123423]

tbh this is still messing about with cables and separating live. You could have mention live separating tool. I suppose you can mention this in your part 2b video.

[@laredotech]

great comparison. I was breaking my head on what to buy

[@rushikeshk25]

Dear sir, The video was great...but i have one question......I am an enggineering student and i have to make a project , hence can u please tell me that what should i use as a power supply???........i live in India.......

[@CurvedSlightly]

Hi Martin, is it worth having the 87 over the 83? Apart from accuracy and temp probe, I can't see much difference, the 83 is much cheaper!

[@jsg8803]

please do a tutorial on analog multimeter

[@infordanilo]

Good afternoon writes Danilo Technical sell and Repair Computers in Republica Dominicana have a Fluke 289 in my work and suddenly not want to climb as if the Software is damaged, I have the test probe wants me a little hand and tell me which are the two keys to be left down to do a factory reset.

[@garrywilliams3548]

pcsoto Soto Factory Default Reset the Meter to the factory defaults as follows: 1. Power the Meter on in any function. 2. Press F4 (Setup) and select Reset using arrow keys. 3. Press F3 (Meter). 4. Press F1 (OK). The Meter should go through power up routine.

[@infordanilo]

Gracias Garry..

[@mjlorton]

I assume you mean the cable length....it's 2.4 meters.

[@romanhanajik3185]

I like to measure starting current from car - maybe 200-400A. Only for fun, not for accuracy. Without interrupting the circuit. I know Matech MS3302 extension for multimeter which is until 400A, but is only for AC current. Another device or how to persuade Matech MS3302 to measure DC current? O:)

[@MoketeLitabe]

hey mjlorton you are the star!

[@12kerryman]

Great tutorial

[@manurung497]

Thank you, very useful information. Cheers

[@gerikuper6473]

Can you help me for multimeter for tv service. is good thi Peaktech P3360 help me am new on this I need help

[@oskarsfreimanis8192]

Thanks for explanation! Great video!

[@mjlorton]

Still need to produce it.

[@iwantosavemoney]

thank you for the information and the link.

[@mjlorton]

Thanks!

[@greygoosemafia]

what do you think about the fluke 376 true rms clamp meter? i have that and the 87v

[@myyube81]

I have 381 which is pretty much same as 376 just removable display....I love mine....

[@kenlee4302]

like it, in encouragement for continuation of more educational videos

[@savator408]

wow that's long...so i can measure amps while the panel is somewhat closed...Thanks...I need to get one of these for my fluke 116

[@younismark]

great videos, Thank you very much.

[@EasyFold007]

Thanks vir die videos Martin ek dink jy sit great effort in en gee jou eerlikke opinie :)

[@mjlorton]

The load / live wire...but be safe...

[@defritzel]

These are all things I do every day, but thank you for the awesome video!

[@COMB0RICO]

Good video. Thanks from Texas.

[@jodyfree953]

Great instruction

[@delarexx]

thanks to everyone for this video

[@QAhkam]

Very Nice, thanks for the great tutorials!

[@licensetochill79]

Fluke 376 everything most people would need

[@henrybartlett1986]

Fantastic.

[@Natemasterflex]

Great video 👍

[@velviamiller8499]

thank you for all your videos :)

[@sarangalekamge1048]

Profitable. Thank you Sir

[@bangkokhomes]

Very good video's

[@PedroLusungamena-gi5pr]

Good

[@vaughnburrows]

Great Video Thanks.

[@blackjudas77]

Where's part 3? =)

[@ernststavroblofeld1961]

Why are those clamps so expensive?!

[@Rs500ybd]

+Ernst Stavro Blofeld Test kit has always been costly even back in the days of analogue meggers tester were big bucks . sensitive parts cost to build ect .

[@dtrrtd774]

Ernst Stavro Blofeld Goes down to about $50 for a cheap off brand 65A or 600A clamp prove that can be used with any DMM or oscilloscope. Fluke costs a premium because it's designed and manufactured much better.