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Uni-T UT120C review and tear down
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Wytnucls:
The case is a bit bulky, but it protects the meter quite well.
One feature I hadn't noticed, is that the meter can be used with the translucent case closed. There is a clear aperture over the LCD screen and 2 openings in the case for the probe leads to pass through.
So, once the proper selection has been made with the range switch, the case can be closed and the meter can be used in a rough and dirty environment, without having to worry about contamination. It is kind of rainproof, but certainly not waterproof.
Wytnucls:
Here are a few screen shots of DC Volt measurements: 2V, 12V, 30V
Wytnucls:
AC Volt and mA measurements: 12.4VAC and 225 mA AC
Wytnucls:
Some uA and mA DC measurements: 166uA, 55 mA, 220 mA
Wytnucls:
Resistance and Capacitance measurements: 56kOhms and 22uF
I won't bore you with the rest. Let's just say that everything seems to be well within published tolerances.
Volt, mA and capacitance range accuracy can be adjusted with trim pots.

The constant current delivered for resistance measurement is 170uA.

The capacitance measurement uses a 40uA constant current. The peculiar voltage build up on a 22uF cap is shown here on the oscilloscope. Bear in mind that the maximum capacitance range is 100uF.
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