What do you mean by "fairly accurate down to thousands"? Do you mean you want enough accuracy to read milli-amps? If so, you won't get that in an affordable clamp-on amp-meter.
That Tenma clamp meter doesn't have very clear specifications: it lists the accuracy for DC current as "+/-(1.5%+8)", which means up to 1.5% error, plus eight counts. However, they never tell you how big a count is. Assuming a count is one digit of the display and the 0-40A range lists current as 40.00A, then 8 counts would be 80mA, so your error would be up to 1.5% plus 80mA. However, it could be an offset of 800mA, or even 8A on the 1000A scale. -Morgan LaMoore On Sun, Sep 22, 2013 at 6:35 PM, Hart Penn <hartp...@verizon.net> wrote: > I have the Tenma 72-9485 AC/DC clamp meter that seems to be fairly > accurate, > comes with nice probe set, manual and case for $139 from MCMElectronics > http://www.mcmelectronics.com/product/TENMA-/72-9485. It's a little more > than you want to spend but well worth the extra forty bucks. I've tested it > in my EV 12V env (0-20A) and the HV env (0-500A) with good results and have > two other instrument ammeters that concur with the clamp meter readings. > > My $0.02, > Hart > > > -----Original Message----- > From: ev-boun...@lists.evdl.org [mailto:ev-boun...@lists.evdl.org] On > Behalf > Of Peakfoto Digital Photo Still n Video > Sent: Sunday, September 22, 2013 7:14 PM > To: ev@lists.evdl.org > Subject: [EVDL] AC _DC amp meter > > Am looking for a clamp on meter capable of at least 100 DC amps + and > fairly accurate down to thousdands . With" AMPS max hold" and would like > to > ?? pay less than $100 . > with Good Rubber leads that can be pointed tips or agligator . > > anyideas? > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130924/13c91667/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
