UNI-T UT139C MULTIMETER

[jobog]

Just received the UT139C multimeter I ordered and it appears to be a pretty decent meter.  The continuity beeper is really slow but it seems to be well built.

When I took the meter out of the box there was something rattling around inside the cardboard box.  What I found was a small, about 1/8", steel ball bearing.  Looks like something that would be used for the detente in a rotary switch.  The switch on my meter seems to work just fine so I don't think it came out of my meter.  Don't know why a piece like this would be anywhere near the packaging operation for these meters so I must assume that UNI-T is just providing a spare ball in case I take my meter apart and lose one.

Always disconcerting when you find something loose in a box that could have come from the product you just bought.

[miguelvp]

I have an old GB GDT-200A piece of crap and one of the bearings kept on getting free. I did attempt many times but not really trying really hard since with just one bearing is was working fine.

Last time I did take it apart I finally fixed it and there is no rattling anymore. As far as I recall, that bearing has been getting out of it's post since I got that meter at a Home Depot a long time ago.

I do have a UT71B but those don't use ball bearings.

Anyways, I don't think they gave you an extra bearing, I think it probably came loose and it's looking for a place to nest and create a short.

[retiredcaps]

The continuity beeper is really slow but it seems to be well built.

I wonder if you have a defective one.  The youtube video by eevblog member, electronupdate,



at around 7:19m shows the continuity speed and it seems fairly fast.

Are you comparing the UT139C continuity beeper to another faster meter like a Fluke 87V or something like that?

[jobog]

The continuity beeper is really slow but it seems to be well built.

I wonder if you have a defective one.  The youtube video by eevblog member, electronupdate,



at around 7:19m shows the continuity speed and it seems fairly fast.

Are you comparing the UT139C continuity beeper to another faster meter like a Fluke 87V or something like that?

I would say my meter's response is comparable to the one in the review so it's not defective.  I was comparing it to my Radio Shack meter which is a little faster than this one.