Products > Test Equipment
DER-EE DE-5000 ESR zero measurement problem.
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TA3UIS:
Hello everyone, I am new to the forum. It's a great forum.

My problem is that the DER EE DE-5000 LCR METER I bought 3 months ago.
Measures the ESR value of 3300uf and 10.000uf capacitors as ZERO.
Where might the problem be? I added a few screenshots.

mawyatt:
Did you preform an Open and Short Calibration first?

Best,
TA3UIS:
Hello, yes i dit it but nothing change.
mawyatt:
OK. Now add a small valued resistor under 1 ohm in series with the large value cap. Measure the resistor first to get it's value, then add in series with cap. Meter should show ESR as value of added resistor plus any ESR of actual cap.

Edit: Just noted your frequency is 100Hz, try 1KHz instead.

Best,
4thDoctorWhoFan:
Those very high value caps should read about 0.0.
That means those caps are good.  I would be worried if those caps did not measure zero.

Approximately 2200uF and up should read zero ESR.
They are probably actually measuring around 0.01 or 0.02.
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