Products > Test Equipment
Fluke 289 Meter
joeqsmith:
--- Quote from: WaveyDipole on November 14, 2019, 01:51:29 pm ---One thing I read about those Keysight/Agilent meters and that has held me back is regarding the rotary knob contacts wearing prematurely compared to Fluke. I'm not sure whether this applies to a specific models or Agilent vs Keysight branded versions or more generally. The test here is on a U1231 which is at the low end:
Maybe higher end models are not so affected? he makes a point about the contacts not being lubricated, but doesn't mention whether lubrication would help to extend the longevity? The video is from 2017, so maybe things have improved in later versions? I have re-considered my purchase of a Fluke 289 in favour of an Agilent/Keysight meter so would be very interested in your observations when you unit arrives.
--- End quote ---
There was a guy on this site that had claimed to put 10s of thousands of cycles on these meters every year with no problems. They were going to debunk what I show but they couldn't ever take their meter apart to show if the detent spring was the same or not.
I doubt lubrication would have prevented that detent spring from cracking. It appears to have just been a VERY poor material selection. Maybe a supplier screwed up. I saw a similar lapse in quality on that brand new 87V I looked at.
Keysight, even though they hang around on this forum have never commented on it.
Gandalf_Sr:
So, if I set up a machine to turn the knobs on my multimeter for a week or 3, they would fail... hmmmm.
Does anyone actually have a Keysight (or any other brand meter) which the knob dropped off?
I'll go first... I have had upteen meters, Fluke, Keysight, Aneng, and never had a knob come off any of them.
tooki:
The detent spring broke on my very first DMM, a Radio Shack 22-174 I bought around 1994. (Mind you, it took over 15 years to fail.) I’ve always wondered who the OEM on that was...
rsjsouza:
I have been using meters (HPAK, Fluke, Uni-T, etc.) with rotary switches for quite some time and I still haven't seen any problems as reported by Joe. That doesn't mean his test is invalid, but I suspect it may have been an on/off event. The low lifespan (~2000 cycles IIRC) would be low enough to make big crowds with pitchforks and torches set camp in front of their HQ.
IME, the worst meters were the ones where the detents were so smooth that it was easy to leave them half way between two scales. Those were tossed in frustration.
AleXis6:
hi.
could you help me please
it was possible to record > 60000 samples in 2020 (>18 hours for measurement every 1 second)
but now it is available less than 3 hours for every 1 second measurement, so If I need 24 hours measurement it will be measured every 9 seconds
I delete all data from memory, and 99% of memory available for records.
I do not know what is changed.
May be I recorded via PC previously
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