The following quote was taken from the EEVBLOG forum:
#msg4519526
Jiri Bekr,
“UT61E is the only multimeter with classic shunt wire, that even when overheated, still has the same reading, no matter the shunt temp. I have overloaded the multimeter (1 minute at nominal current should be enough for CUT indication), and the measurement was still absolutely correct (after the CUT was done beeping). Any other multimeters begin showing more and more, until you get like 12A on display while just 10A is passing through the multimeter. Usually shunt wire gets hot at nominal current, begins to expand its length and increases resistance, so also increasing burden voltage, causing bad reading. Some SMD shunts are prone to this too, but not that significantly of course.“
PArt1 of my review of the UNI-T UT61E may be found here:
The data for the meters I have tested may be found here:
Answers to Frequently Asked Questions may be found here:
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