What Voltmeter do you use?

C

cstanley

Member
Joined
Jan 2, 2017
Messages
43
Greetings,

List what voltmeter you are using, and perhaps something you like about it.

I have theINNOVA 3320 but I am sending it back because after a month the voltage starting becoming irregular, even with the terminals pulled out the voltage hops around. Not to mention when tying to measure resistance, the ohmmeter always registers as zero. I do not recommend this unit. I have heard a lot of good things about Fluke, but they are extremely expensive.

What do you guys use?
 
Hi cstanley,

most of cheap multimeters come from China and they are not realy measuremet devices but only indicators.
If you want to know real voltage you should relay on your measurement device otherway everything is only gamble.
Spend a little more money and get a Flucke or Agilent, Keysight or one of this fat boys.
The second row ist Uni-T, Masteck, etc. They are not that fast and accurate but mostly work.

I for myself have this three: Fluke 175, Uni-T U65D and Benning MM P3

Best regards
BigBen
 
China guess work for the win. it's reliably inaccurate
 
https://www.jaycar.com.au/cat-iii-multimeter-with-temperature/p/QM1323

This guy is my workhorse of a multimeter, Cheap enough, while being in the same tolerance grade as entry model flukes,

The main difference is a fluke you can put it in resistance mode across 1KV and still work afterwards, this one i know still works after putting across 78V, but i wouldn't try much higher, And lacks HRC fuses if your measuring current.
 
http://www.harborfreight.com/7-function-multimeter-98025.html

This is the one I always reach for first. I have several of them. Harbor Freight sometimes gives them away for free-with-purchase. Accurate enough for most measurements. If you wreck the ohms function by trying to measure a voltage or current with the meter set on the ohms scale, no big deal. But these meters are actually surprisingly resistant to that failure mode.

170123: unintentionally leaving the meter in the 200mA mode, I have occasionally tried measuring 18650 voltage (!). No harm done to the meter, but I do yank the leads as soon as I see the over-range indication.


image_dfpvmx.jpg

I am quite happy with the accuracy of my shoddy little Chinese multimeters!​


Incidentally, here is a really interesting option:
http://s.click.aliexpress.com/e/urjufuB
It is a Chinese production of an open-source component tester developed by German engineer Markus Frejek, and later Karl-Heinz Kbbeler. A full description of the project is available here: http://mikrocontroller.net/articles/AVR_Transistortester
Its initial calibration demands are frustratingly cryptic, only to be resolved with a dose of Youtube:
I ordered one, and assembled it. It has ABSOLUTELY NO assembly instructions, but the extremely high quality double sided fiberglass PC board is well annotated.

Update 170126: This has to be about the coolest $14 I have ever spent. The kit went together in a little over an hour, all the pieces were present, fit perfectly and soldered beautifully. It powered up and the display was blank. I wasted my time and money! In desperation, I twiddled the pot on the back, and, presto-changeo, the display came to life: the pot is the contrast adjust. Duh! Duh, also: now I know it is also available assembled and tested for only $2 more than the kit form.

It will take me a while to determine what all this gizmo does, (for example it reports its incoming supply and CPU Vdd voltages) but here are some preliminary test shots:

image_uubcrj.jpg

image_itenyf.jpg


image_geveml.jpg

image_mafrey.jpg
​
 
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