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Old Fluke Multimeters

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coromonadalix:
send them to k04bb  for archival purposes and availability,  it helped me a lot in the past

helius:
Hi Drtaylor, and thanks for sharing your deep knowledge of these instruments. I acquired an 8060A for myself after reading this thread. It was sold to me as broken, but all that was required to fix it was opening the case and brushing off some dust.

You mentioned in an earlier post that you specified low-leakage electrolytics from Panasonic. Do specific capacitors in the design require low leakage (like less than 15 uA)? I ask because when cleaning my unit (with 1995 date codes), I saw that all of the aluminum caps are Nippon Chemi-Con, and the one associated with the Fluke/Motorola RMS chip, C19, is a "LL" or "LLA" type with maximum leakage of 1.5 uA. None of the capacitors in my 8060A have leaked, but after 22 years I think I will replace them, as long as they remain within the design specs. I have to clean the board in any case, as just handling it with my fingers has increased the drift and ratio test discrepancy.

I was a bit surprised to see that the custom RMS chip was still being produced in 1995, as you stated that it became obsolete before that. Another curiosity is that in my meter, one of the capacitors that is present in earlier units, C28, has been left unpopulated. I don't have a schematic for that version, but it seems connected with the ADC supply circuit. It looks like Fluke decided it wasn't needed!

Thanks!

BravoV:

--- Quote from: coromonadalix on April 29, 2017, 03:23:58 am ---send them to k04bb  for archival purposes and availability,  it helped me a lot in the past

--- End quote ---

+1, he is the one that is so dedicated on archival, drtaylor, please don't just send out these gems randomly to anyone who asked it.

whitevamp:
was just searching ebay and came across theses little gem's.
http://www.ebay.com/itm/FLUKE-METER-8060A-TRIPLETT-WIGGY-ALTEK-AMPROBE-MICRONTA-MULITMETER-TEST-/192098175862?hash=item2cb9f18b76:g:CCwAAOSwEzxYaoO3
and
http://www.ebay.com/itm/Lot-x35-Fluke-8060-8020-8062-8024-8022-8012-A-B-True-RMS-Digital-Multimeter-POR-/332105624040?hash=item4d5309a9e8:g:9AgAAOSwnHZYR0xY

babysitter:
Documents in german? I offer to write "executive summaries", full transcriptions might be possible but I will not sink unlimited time into it. But a ES is better than nothing, right? :)

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