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Referring to your recent comment:QuoteThe UT61E has been discontinued, so your entire argument is moot.In France, does the word discontinued mean something is no longer available for purchase? Or are you just trolling him?
The UT61E has been discontinued, so your entire argument is moot.
Oh, and just a note: as usual, you post pictures from others without attribution or mention of their origin. That picture of two different UT61E DMMs is by user Nisei and comes from this thread:
Joe, you are assuming Fungus actually owns or has access to a Fluke 101. He really is the perfect armchair expert on DMMs that he has never even seen in person, much less taken apart.
I am not sure what your point is exactly. UNI-T is certainly not the only manufacturer that changes the PCB of a product during its lifecycle, or that populates the PCB with different components from one production batch to another.
referring to 3~4 years old pictures of a different, discontinued model seems to me a bit irrelevant and a distraction.
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Referring to your recent comment:QuoteThe UT61E has been discontinued, so your entire argument is moot.In France, does the word discontinued mean something is no longer available for purchase? Or are you just trolling him?In France, discontinued means exactly the same as in any part of the US or the UK:
discontinued
adjective
(of a product) no longer available or produced.
In any case, why bring a discontinued product with various versions into the discussion, when my comment was about the UT61E+ and its Intertek-certified version the UT161E and the negligible price difference between these two?
In any case, why bring a discontinued product with various versions into the discussion, when my comment was about the UT61E+ and its Intertek-certified version the UT161E and the negligible price difference between these two?
I found another meter that has a separate path for voltage that doesn't go via the surge resistor/PTC.
See, I'm not crazy!
Have a look at the input diagram that I posted in response to Dave, then note that the 7 resistors you are referring to are 143K, so they add up to 1M. Without tracing it out or finding a schematic I can't be 100% sure of the configuration, but the 87V/AN schematic I posted is fairly typical for contemporary Fluke designs. As for others, it will be driven by the requirements of the chipset that they use.
A) You removed the PTC and found the 101 could no longer read AC and/or DC voltages?
B) You removed the PTC and found the 101 could still read AC and/or DC voltages but you don't want me to eat too much crow?
C) You want to continue to believe your original statements and are concerned they are wrong? (burying your head in the sand rather than confronting it)
D) You lack the soldering skills to lift one pin or the 101 costs too much and you are concerned about damaging it?
E) You're too lazy and can't be bothered to test your theory?
F) I've burned myself too many times trying to solder and am scared to pick that thing up!!
Burning yourself with a soldering iron is nothing to be ashamed of.
Crazy, no, but you may have jumped to a conclusion a bit early.
Have a look at the input diagram that I posted in response to Dave, then note that the 7 resistors you are referring to are 143K, so they add up to 1M.
Maybe that path is something to do with the IEC61010 requirement for the meter to still show hazardous voltages even if it's damaged. It could go directly to a comparator and show an indicator on screen or something like that. It would work in all ranges with no CPU required.
Right now I'm trying to think what it would be for if it's not for voltage measurement.
OK, I wasn't paying attention here but I've got other meters with a resistor chain like that and they add up to 10M. I've measured it.
[...] UNI-T is certainly not the only manufacturer that changes the PCB of a product during its lifecycle, or that populates the PCB with different components from one production batch to another.
While the manufacturer may have discontinued the product, it's certainly still available for purchase. People can still choose it over other products.
How is that relevant to the UT61E+ and its Intertek-certified version the UT161E?
G) You're in gloat mode and sound fairly sure of yourself so I'm guessing I'm wrong.
I don't mind being wrong, it's an excellent way to learn. I wish I could be wrong more often.
Right now I'm trying to think what it would be for if it's not for voltage measurement.
While the manufacturer may have discontinued the product, it's certainly still available for purchase. People can still choose it over other products.
I never wrote that it was not available for purchase, I wrote that it was discontinued.
Uni-T is doing the PCB copy'n'paste between UT61E+ and UT161E. I see the larger fuses and PTC's, PTC's moved slightly but nothing significant.
Looks like they want to charge a premium for a real 61010 product. I'll bet the BBQ lighter still makes it crash lol.
[...] UNI-T is certainly not the only manufacturer that changes the PCB of a product during its lifecycle, or that populates the PCB with different components from one production batch to another.
UT61E there are least 15 PC board revisions! Did you end up with the kindergarten or junior-high version? Earlier ones were extra junky and ended up in landfill.
It's a bit ridiculous and I don't get a sense they know what they are doing. Seem to sell prototype builds off with fake regulatory claims and as they learn, for years.
And it's over $0.25 worth of parts savings for the boss's new Lambo
The two schematics one has MOV's, they don't use Rev. #'s and SG4 (4th MOV) at the current-shunts, appears useless.
Rev. 13(GS) has 4 MOV's, 3 PTC's, 600V fuses, rating Cat. III 300V, Cat. II 600V
Rev. 12 has 4 MOV's, 3 PTC's, 600V fuses, rating Cat. III 300V, Cat. II 600V
Rev. 9C no MOV's, 3 PTC's, 250V fuses, rating Cat. III 1,000V, Cat. IV 600V; SOT89 clamps
Rev. 9A no MOV's, 2 PTC's, 250V fuses, rating Cat. III 1,000V, Cat. IV 600V
Rev. 8 no MOV's, 2 PTC's, 250V fuses, rating Cat. III 1,000V, Cat. IV 600V; SOT23 clamps
UT61E+
Rev. 3 has 3 MOV's, 4 PTC's, 250V fuses, rating Cat. III 1,000V, Cat. IV 600V
Rev. 2 looks the same, blue pcb
Also the pictures of the discontinued UT61E that Fungus posted are from another EEVblog forum member Nisei, who duly noted (as can be seen on the PCB silk screen) that the two UT61E DMMs that he owns are different variants of the UT61E - the model on the left is a UT61E-GS and indeed it has better input protection and larger fuses.
Show me a photo of a Uni-T meter, a manual, or a website link that actually has a meter labelled "UT61E-GS".
I often ask why people continue to discuss safety in a thread that has nothing to do with it.
Show me a photo of a Uni-T meter, a manual, or a website link that actually has a meter labelled "UT61E-GS".
My reply #4203 has them. The meter is still labelled UT61E, but has the "GS" mark and has different CAT ratings.
That's my point. The model number is exactly the same, yet the meter differs greatly in it's safety specs.