Ebay Digital Ammeter, Shunt Required?

[Brown]

Hi EEV Forum!
Do I need a shunt resistor for this ammeter?
http://www.ebay.ca/itm/140891198308

Thanks!

[Simon]

I don't think so, but with that sort of "ingrish" anything is possible.

[PA0PBZ]

If it was an old moving coil meter with a fixed scale of 0-5A it could be that it needs an external shunt, but this digital one advertised as 0-5A should have a shunt already, otherwise it would not be 0-5A but a volt meter. But like Simon says (no pun intended) you can expect anything from these China sellers.

[grifftech]

 

[ez24]

Here is another one that show more on the wiring

Yours looks like it has two wires but must have four like this one, notice the shunt on the back.  I suggest you buy one that has more details like this 3 amp model:

http://www.aliexpress.com/item/0-36-5-Digits-0-3-0000A-DC-Ammeter-Digital-amp-Ampere-panel-Meter-Red-LED/32314115899.html?spm=2114.01020208.3.31.kmIhNZ&ws_ab_test=searchweb201556_6_71_72_73_74_75,searchweb201527_2,searchweb201560_9

[Brown]

Thanks for the help guys!

[kripton2035]

generally for these small amp meters, you need a shunt for modules that measure > 10A
under 10A no need for a shunt, it's already implemented in the module