Products > Test Equipment
Review and tear-down of UNI-T UT612 LCR meter
<< < (10/21) > >>
Wytnucls:
If you are obliged to work with ESR ballpark figures, that can be done with the dissipation factor (D) too. The advantage being that it is mostly independent of capacitance. The only variable is the capacitor rated voltage.
Here is a table listing dissipation factors for different caps from several manufacturers. You will notice that the values are not very different, even between series.
Any gross deviation from those figures for a cap under test would mean a necessary replacement.
For known Low ESR caps, any measured dissipation factor above 0.10 should be treated with suspicion.
don.r:
Wytnucls (or anyone with this meter),

I know the maximum cap value is 20,000uF but will it measure ESR (or dissipation) for a cap greater than this?

Thanks
jarvis:

--- Quote from: don.r on June 03, 2013, 10:56:49 pm ---Wytnucls (or anyone with this meter),

I know the maximum cap value is 20,000uF but will it measure ESR (or dissipation) for a cap greater than this?

Thanks

--- End quote ---

Use Rs mode to measure the capacitor. Rs mode is equivalent to ESR measurement.
don.r:

--- Quote from: jarvis on June 04, 2013, 05:08:13 am ---
--- Quote from: don.r on June 03, 2013, 10:56:49 pm ---Wytnucls (or anyone with this meter),

I know the maximum cap value is 20,000uF but will it measure ESR (or dissipation) for a cap greater than this?

Thanks

--- End quote ---

Use Rs mode to measure the capacitor. Rs mode is equivalent to ESR measurement.

--- End quote ---

Much appreciated. Still shopping and looking for any weaknesses for my uses. The other question i have is... does the lack of true kelvin probes compromise much on this meter?
iloveelectronics:

--- Quote from: don.r on June 04, 2013, 01:40:48 pm ---
Much appreciated. Still shopping and looking for any weaknesses for my uses. The other question i have is... does the lack of true kelvin probes compromise much on this meter?

--- End quote ---

One other major issue of the UT612 (seems worst on my unit than Wytnucls') is the LCD display. It's almost completely washed out if I look at it from a direct angle. I have to look at it at a 45 degree angle.
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod