Products > Test Equipment

UNI-T UT61E Multimeter teardown photos.

<< < (157/217) > >>

Didix:
Did anybody connect two UT61E via the USB Connector to the same computer?
Will this work?

-Didix

crystal:

--- Quote from: Didix on January 04, 2015, 05:03:11 am ---As much as I can see from the offers on Alibaba, the Chinese ones come with a serial interface
whereas the ones in Germany come with the USB interface which would cost an extra around US$ 15 for the Alibaba one.


--- Quote from: Lightages on January 03, 2015, 02:08:37 pm ---After having both the UT61E and the UT139C I recommend the UT139C instead, if you don't need the PC connection.

--- End quote ---

I have made a lot of reading in that thread,
but I am not yet sure whether my additional DMM will be a UT61E or UT139C.


If we neglect the fact of the price difference and
the fact that I am working on voltages below 230V and
did never use temperature measurement with my UT70A,
would you (or others) still go for the UT139C?

If yes, why?

-Didix

--- End quote ---

Buy the one that will fill up the cons of the multimeter you already have so they can supplement each other. What is your first multimeter?

Yago:

--- Quote from: Didix on January 04, 2015, 05:03:11 am ---
If we neglect the fact of the price difference and
the fact that I am working on voltages below 230V and
did never use temperature measurement with my UT70A,
would you (or others) still go for the UT139C?

If yes, why?

-Didix

--- End quote ---

How do you know you will be working on voltages below 230?
The point with a meter is that you measure things with unknown values.

I was checking through television and ethernet cables in my house, had moved the rooms around and one PC/tv wasn't working correctly.
After a bit of headscratching, thought I'd better bell out these leads.
All the ethernet was belling out to televison and PC, and nothing would work properly...arg.
A thought that the TV wire has a long run and could have picked up some noise or damage to the cable and that too should be tested.
Display on the meter flashed!! WTF volts on the TV cable!!!

Turned the meter over to Volts stetting, checked and the meter display flashed again.

Putting it simply, whatever was on that TV aerial wire is more than the max volt capability of a CATIII 1000v Brymen 857s.

I have no equipment and no supplies of such voltage but it is here in my home.

SeanB:
Congrats, you have a floating antenna lead, picking up static charge from the air and feeding it down the lead.  Roof antenna will need an earthing lead leading straight down from it to a 1.5m long earth spike driven into the earth directly underneath it. That should get the voltage down to a low level. Use 2.5mm cable ( rated for 20A) and coat the join to the copper coated steel earth rod with dielectric grease to keep corrosion at bay. If it already has an earth rod it is likely it has rusted away in the ground, pound in a new one next to it and join to the grounding wire.

Yago:

--- Quote from: SeanB on January 04, 2015, 01:41:36 pm ---Congrats, you have a floating antenna lead, picking up static charge from the air and feeding it down the lead.  Roof antenna will need an earthing lead leading straight down from it to a 1.5m long earth spike driven into the earth directly underneath it. That should get the voltage down to a low level. Use 2.5mm cable ( rated for 20A) and coat the join to the copper coated steel earth rod with dielectric grease to keep corrosion at bay. If it already has an earth rod it is likely it has rusted away in the ground, pound in a new one next to it and join to the grounding wire.

--- End quote ---

Hmm, it was connected to a lot tv stuff: distribution amp, dvd, cable tv...much of that earthed.

Still haven't had time to work out what the source was, just disconnected and isolated everything I could.
Will post back what I find, I don't think it is safe to assume it's static.
Would static hold a multimeter in clamped overvolt warning mode?
Thought it would dissipate pretty quick.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod