Products > Test Equipment
UNI-T UT61E Multimeter teardown photos.
Monkeh:
--- Quote from: c4757p on April 03, 2013, 11:15:04 am ---
--- Quote from: Wytnucls on April 03, 2013, 11:07:19 am ---Check the accuracy of the 10 amp range now, as the fuse is part of the shunt and any change in resistance will affect the original calibration.
--- End quote ---
Wait, really? How idiotic!
--- End quote ---
No, not really.
Wytnucls:
I checked the UT71 circuit and it does look like the measurement is also done on the shunt only. Mine went out of calibration after the fuse mod, for other reasons, obviously. Thanks Monkeh, learning everyday ;)
No harm in checking calibration anyway... ))
em132:
--- Quote from: Wytnucls on April 03, 2013, 11:07:19 am ---Nice job.
--- End quote ---
Thank you.
--- Quote from: Wytnucls on April 03, 2013, 11:07:19 am ---Possibly not much of an improvement
--- End quote ---
Maybe... Maybe not.
With respect, is it any worse than your 71B? How many spark-gaps has yours got?
--- Quote from: Wytnucls on April 03, 2013, 11:07:19 am ---because of trace spacing and general construction
--- End quote ---
Again, with respect, has it been determined with absolute certainty that "trace spacing" was the main factor in downgrading the "GS" models to Cat III 300V / Cat II 600V, and not, perhaps, just it being another simple case of legal "cover-your-ass-itis?"
As for the "general construction," you'd be hard-pressed to find a better solution for isolating the battery (esp. compared with the 71 series!). The 10A fuse is also essentially isolated in its own little corner of the board. The thick plastic input jack "buckets" each act as circular isolation slots, and (to my eyes) the blast protection around the case seems to be well implemented (deep U-groove and thick sidewalls).
Am I missing something?
Not looking to start anything (really!), but a little perspective would be nice.
T4P:
I have known Wytnucls the man famous for defending his dear UT71X series DMMs
While his comes with glass fuses ours come with ceramic fuses stock :) That just shows how much this DMM has to give in terms of safety (If not for cost cutting by UNi-T's beancounters)
M0BSW:
I got mine today and I really like it for my low powered radio amateur projects and radio servicing , I'm really interested in the backlight hack, must loo it up.
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