Author Topic: BK LCR Meter  (Read 15040 times)

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Offline Kiriakos-GR

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Re: BK LCR Meter
« Reply #25 on: November 07, 2011, 01:52:46 am »
I am aware about APPA but I really dislike their LCD display's.
Its like my love and hate relation that I have with some Extech multimeters with long bold fonts.

The APPA products are also distributed and as re-branded in Russia, at a lower pricing.


 
 

Offline robrenz

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Re: BK LCR Meter
« Reply #26 on: November 07, 2011, 04:05:36 am »
One thing I have noticed on the handheld LCR specs is that you cannot say brand "X" is accurate to .X%.   All the manufacturers pick their best range/Hz as their banner spec. But another range/Hz may be 25 times less accurate on percentage alone even before you consider LSD.  Comparing specs without actually calculating the %+LSD error of the max of the range and lowest of that range that isn't covered by the next range for each meter is a total waste of time. Some manufacturers use a lower percentage but compensate with a higher LSD especially on the highest resolution ranges.  The LSD may not be the same resolution between meters on certain ranges so the same LSD number could be ten times more error. When you test using a known standard you have to take the test value and do the actual worst case error from the meter specs for that value/range/Hz as %+/-LSD and then divide that by the test value to get the actual meter % accuracy for that value. one meter may excel at capacitance and be worse on inductance. You have to do your homework to accurately compare specs.  Wether or not the meter actually is within the stated specs and for how long is another story.


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