Products > Test Equipment
Multimeters with (Color) Graphic Display - Summary & Comparison
2N3055:
--- Quote from: joeqsmith on April 19, 2019, 08:41:09 pm ---With both of your owning them, are the Metrix difficult to disassemble? Does it void the warranty if they are taken apart? I am just surprised I have never seen any pictures posted of their internals.
For the price, I would expect these to be bullet proof. Imagine if all we saw was a single PTC like the ANENGs.. :-DD :-DD
--- End quote ---
There is a French gentleman opening one ..
joeqsmith:
Good find. I didn't see any sign of GDTs or MOVs for the primary clamp. Perhaps they are on the backside. They used a good sized PTC and what I would assume is some specialized resistor in series with it.
All sorts of mechanical relays. Perhaps these have an internal shield. If you hold a magnet next to the meter, does it change the state of the relays like the Gossen? Worse, can you get the meter into a state where it will not display voltage with just a magnet?
2N3055:
--- Quote from: joeqsmith on April 19, 2019, 09:01:04 pm ---Good find. I didn't see any sign of GDTs or MOVs for the primary clamp. Perhaps they are on the backside. They used a good sized PTC and what I would assume is some specialized resistor in series with it.
All sorts of mechanical relays. Perhaps these have an internal shield. If you hold a magnet next to the meter, does it change the state of the relays like the Gossen? Worse, can you get the meter into a state where it will not display voltage with just a magnet?
--- End quote ---
I'll take a look if I have one of those HDD magnets to try.. Unfortunately, I don't have that mighty degausser of yours.
I presume there is a good chance they could be made to switch. Relays are close to edge, you could get close to them from outside the box..
joeqsmith:
--- Quote from: 2N3055 on April 19, 2019, 09:09:51 pm ---
--- Quote from: joeqsmith on April 19, 2019, 09:01:04 pm ---Good find. I didn't see any sign of GDTs or MOVs for the primary clamp. Perhaps they are on the backside. They used a good sized PTC and what I would assume is some specialized resistor in series with it.
All sorts of mechanical relays. Perhaps these have an internal shield. If you hold a magnet next to the meter, does it change the state of the relays like the Gossen? Worse, can you get the meter into a state where it will not display voltage with just a magnet?
--- End quote ---
I'll take a look if I have one of those HDD magnets to try.. Unfortunately, I don't have that mighty degausser of yours.
I presume there is a good chance they could be made to switch. Relays are close to edge, you could get close to them from outside the box..
--- End quote ---
That Gossen could easily be switched from outside the box. IMO, IEC is behind the times to let this sort of thing be allowed in an industrial handheld meter. Then again, I am surprised Gossen would design a meter like this.
https://youtu.be/COuCsWDoI9E?list=PLZSS2ajxhiQBTCU8Mq_i9jidT024A0dV6
sotos:
Can you name separately each datalogging save? in the UT181A. Fluke 289 cannot save a name as you wish, it saves them generally and when trying to get it back you must remember how it was saved.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version