The point is significant figures. If you have one less significant figure, the correct value to display is the rounded value not either. And because you have one less significant figure they are equivalent given their respective resolution. In either case Martin goes a little bit far saying it's out when it's well well within its tolerance band, however it is annoying when he says it's bang on when actuality its account off what it should be reading or vice versa.
Low battery is showing a reference that is operating at too low a current to regulate. Thus the high readings. Nice meter ( thank you Martin again) that is very useful. A lot of things in a small convenient package. Nice seeing the added measurements, as well showing the input resistance of the other meter as a bonus. Capacitance is not a serious loss, in most cases a capacitor can be tested other ways, and I bought a LCR meter to do that. Nice low burden voltages is a plus, spare fuses though..
I've got the Elma BM251s, looks to be the same as yours except for some minor upgrades. There are also markings of Brymen all over the DMM, so I guess it's a rebrand through Brymen in that case.
I bought the BM 257, recomended by someone on Martin's forum. 114 €, but the software is not included and the leads are not the same as on Martin's video, mine looks cheap. But yes, the multimeter i like a lot for an amateur as i am. Great video !
I didn't know that Brymen existed, before Martin pointed on that fact in some other review. I really like the 4 big digits on display, True RMS and DCV accuracy < 0,5%! So I have found Brymen BM525S model to fit my needs (0,08% accuarcy!!).
Hi, I like your reviews, but when it comes to data logging DMM you skip the PC SW that connects to the DMM. I really want to see a comparison between these PC SWs (for instance some of them have a time stamps associated with data and some of them don't ). These details may affect the buyer's decision to choose the logging DMM.
I opened mine, the BM 257, i would never do that with new equipment but now i can follow Martin on the video. I posted a picture on the forum, is a little different, there are more 'things' on it :-) But the board is the same i think.
The Metrel MD9040 metioned in the video is actually very similar to the Brymen BM822. The nearest equivalent to the Brymen TB251 is the Metrel MD9016. I would guess that Brymen and Metrel have some kind of agreement that Brymen meters are marketed as Metrel in Europe.
251 and 257s can't measure led's, yet uni-t ut139c DMM and ProsKit MT-2017 AMM can measure all colour led's! Other advantages: - Low price - Both have decent probes- Fast continuity- 139c has fast update times and very quick at measuring caps- Both are loaded with features and have good protection too!
There is also the Byrmen BM255 in this series which has backlight LCD function which I believe could prove handy and a few other additional functions. Which is the equivalent model in the Greenlee range which can be purchased through your Amazon store? DM-210A? I'm finding it difficult to decipher what the equivalent models are for the the various rebadged Byrmen products
mjlorton Hi. Where can i get this multimeter in Cape Town? And if i can't get that specific one which other Brymen meter would be as close to this ones spec because communica do stock some Brymens. Thx
I like the info very much. So i went looking for a bm257. I found several bm257S models. I could not figure out if and what the difference between the two is. Anyone?
the s model is slightly newer and conforms with newer eu regs - 1000v fuse and slightly upgraded input protection. There's a post about it over at the eevblog forums
(cont) Spare fuses though would be nice to include with the meter, possibly Frankie should source a supply on his store as a set for us who keep doing them in by accident, even with the nice warning buzzer on the meter.
I know very little about all of this. I am looking for a good dual-purpose multimeter for both home AC use and for use in hobby electronics. This seems like a good choice, however the lack of true RMS and the inaccuracy in AC worries me. Will this be good for household AC use, testing mains, etc? I am in the US, so am looking at the Greenlee DM-200A specifically. Thank you very much for your videos, they are very well done, even if they are a bit advanced for me to fully understand.
hi, please help if you could, i bought a brymen bm257s not long ago after watching your show. my meter shows InEr and has a sngle tone beep constantly. i have replaced fuses and batteries but no cure. hand manual shows nothing about this error. could you advise best course of action i should take. thanks from Ernie downunder aussy
Beep-Jack™ Input Warning The meter beeps as well as displays “InEr” to warn the user against possible damage to the meter due to improper connections to the A, mA, or A input jacks when other function (like voltage function) is selected. If conductive dirt lodges inside either of the two jacks then it is regarded as occupied. I would take it apart and clean the jacks as a start.
I hate to nitpick, but this always bugs me, and there's just a million of instances in this video... 0.9997 == 1.000 == 1.00 0.9997 != 0.999 != 0.99 100.05 == 100.1 == 100 etc.
![[UNCUT] The Loyal Pin ปิ่นภักดิ์ EP.6 (2/4)](http://i.ytimg.com/vi/GgeGQOP10RQ/mqdefault.jpg)
![[TH] 2024 PMSL SEA Finals D3 | Fall | รู้ผลทีมแชมป์ พร้อมตั๋วสู่ PMGC](http://i.ytimg.com/vi/7NxsN0Ch6vk/mqdefault.jpg)
Great. Top bloke. As much as I enjoy Dave's pizzazz and quick Aussie wit, Martin's relaxed, clear style is easier to watch.
The point is significant figures. If you have one less significant figure, the correct value to display is the rounded value not either. And because you have one less significant figure they are equivalent given their respective resolution.
In either case Martin goes a little bit far saying it's out when it's well well within its tolerance band, however it is annoying when he says it's bang on when actuality its account off what it should be reading or vice versa.
Low battery is showing a reference that is operating at too low a current to regulate. Thus the high readings. Nice meter ( thank you Martin again) that is very useful. A lot of things in a small convenient package. Nice seeing the added measurements, as well showing the input resistance of the other meter as a bonus. Capacitance is not a serious loss, in most cases a capacitor can be tested other ways, and I bought a LCR meter to do that. Nice low burden voltages is a plus, spare fuses though..
I've got the Elma BM251s, looks to be the same as yours except for some minor upgrades. There are also markings of Brymen all over the DMM, so I guess it's a rebrand through Brymen in that case.
I bought the BM 257, recomended by someone on Martin's forum. 114 €, but the software is not included and the leads are not the same as on Martin's video, mine looks cheap. But yes, the multimeter i like a lot for an amateur as i am.
Great video !
I didn't know that Brymen existed, before Martin pointed on that fact in some other review. I really like the 4 big digits on display, True RMS and DCV accuracy < 0,5%! So I have found Brymen BM525S model to fit my needs (0,08% accuarcy!!).
Nicely featured DMM. Not easy to find though as there's little on the market via the web and nothing on them in the USA
Hi,
I like your reviews, but when it comes to data logging DMM you skip the PC SW that connects to the DMM. I really want to see a comparison between these PC SWs (for instance some of them have a time stamps associated with data and some of them don't ). These details may affect the buyer's decision to choose the logging DMM.
I opened mine, the BM 257, i would never do that with new equipment but now i can follow Martin on the video. I posted a picture on the forum, is a little different, there are more 'things' on it :-) But the board is the same i think.
The Metrel MD9040 metioned in the video is actually very similar to the Brymen BM822. The nearest equivalent to the Brymen TB251 is the Metrel MD9016. I would guess that Brymen and Metrel have some kind of agreement that Brymen meters are marketed as Metrel in Europe.
Simon R The metrel 9016 also has a temperature mode.
251 and 257s can't measure led's, yet uni-t ut139c DMM and ProsKit MT-2017 AMM can measure all colour led's!
Other advantages:
- Low price
- Both have decent probes- Fast continuity- 139c has fast update times and very quick at measuring caps- Both are loaded with features and have good protection too!
There is also the Byrmen BM255 in this series which has backlight LCD function which I believe could prove handy and a few other additional functions. Which is the equivalent model in the Greenlee range which can be purchased through your Amazon store? DM-210A? I'm finding it difficult to decipher what the equivalent models are for the the various rebadged Byrmen products
Go for the 257, few dollars more, got it all :-)
Try to measure logic frequency on mV range.
mjlorton Hi. Where can i get this multimeter in Cape Town? And if i can't get that specific one which other Brymen meter would be as close to this ones spec because communica do stock some Brymens. Thx
Do you know the link on the forum for 99 cents has a virus attached !!!
Can you please make a clip on the TBM 878. Thank you
I like the info very much.
So i went looking for a bm257. I found several bm257S models.
I could not figure out if and what the difference between the two is. Anyone?
the s model is slightly newer and conforms with newer eu regs - 1000v fuse and slightly upgraded input protection. There's a post about it over at the eevblog forums
Is the Brymen 251 any good? I am looking at the Greenlee DM-200A which is a rebadge of the Brymen 251.
Thanks
(cont) Spare fuses though would be nice to include with the meter, possibly Frankie should source a supply on his store as a set for us who keep doing them in by accident, even with the nice warning buzzer on the meter.
I know very little about all of this. I am looking for a good dual-purpose multimeter for both home AC use and for use in hobby electronics. This seems like a good choice, however the lack of true RMS and the inaccuracy in AC worries me. Will this be good for household AC use, testing mains, etc?
I am in the US, so am looking at the Greenlee DM-200A specifically.
Thank you very much for your videos, they are very well done, even if they are a bit advanced for me to fully understand.
What about the UNI-T UT61E? if is for household AC, maybe can be useful.
The BRYMEN BM-257 is a True RMS DMM also.
Would you mind telling me which model yours amprobe tester is?
hi, please help if you could, i bought a brymen bm257s not long ago after watching your show. my meter shows InEr and has a sngle tone beep constantly. i have replaced fuses and batteries but no cure. hand manual shows nothing about this error. could you advise best course of action i should take. thanks from Ernie downunder aussy
Beep-Jack™ Input Warning
The meter beeps as well as displays “InEr” to warn the user against possible damage to the meter
due to improper connections to the A, mA, or A input jacks when other function (like voltage
function) is selected.
If conductive dirt lodges inside either of the two jacks then it is regarded as occupied. I would take it apart and clean the jacks as a start.
see www.brymen.com/images/ProductsList/BM250s_List/BM250s-manual-print1-IEC61010-1-3rd-r2.pdf
See 28:55 for the sensing on the alerts for the jacks mentioned.
Test: Put the Red Jack in the A Jack and turn on quickly to the A setting and see if the Beep "InEr" warning goes away. Same for the mA / uA Jack.
I hate to nitpick, but this always bugs me, and there's just a million of instances in this video...
0.9997 == 1.000 == 1.00
0.9997 != 0.999 != 0.99
100.05 == 100.1 == 100
etc.