Death & Destruction of a Fluke Multimeter
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From: Jim Yanik on 7 Mar 2010 14:02 "William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote in news:hn0flj$bdj$1(a)news.eternal-september.org: >> If you had seen some of his earlier videos, you'd know why. By all >> means use your cheaper meter if you like, but there is such a thing >> as, "measurement confidence". If your work is important, perhaps >> with lots of money or even someone's life potentially at stake, which >> meter would I rather rely on? I think the answer is pretty obvious. >> I own meters large and small, el cheapos and better ones. But when >> I really need to know, right now and with no bullshit, I reach for >> the > Fluke. > > I bought an expensive Fluke multimeter 20 years. It continues to work > well, and has only needed to have the LCD contacts cleaned (twice). > I'm almost 63, and if I live to be 90, I expect it to continue to > work. > > Harbor Freight sometimes sells their cheap multimeter for $2 (!!!). I > gave one to a friend for Christmas, because he needed one for > occasional work. I can see taking such a meter into places it might be > damaged or destroyed. But I wouldn't use it for daily work. > > > the first one I bought was WAY off in voltage reading;IMO,useless. a 1.5v cell read over 2 volts. FYI,the input Z for those HF DMMs is ONE megohm. -- Jim Yanik jyanik at localnet dot com
From: E on 7 Mar 2010 14:37 "David L. Jones" <altzone(a)gmail.com> kirjoitti viestiss�:BJGkn.72617$K81.22212(a)newsfe18.iad... > The title says it all really. > See what happens when I try to destroy Fluke's new 28-II Multimeter: > http://www.youtube.com/watch?v=qlA7-fh5nDQ > > Dave. > -- > --------------------------------------------- > Check out my Electronics Engineering Video Blog & Podcast: > http://www.eevblog.com > More multimeter torturing: Here is report about those $5 multimeters http://gps.sozialnetz.de/global/show_document.asp?id=aaaaaaaaaaaajxn And video: http://www.gossenmetrawatt.com/english/seiten/cautiondangerousmultimeters.htm Better to stay away from mains with those. I learned that hard way when I measured a water heater with some unknown cheap meter. First measured phase-to-ground 230 V fine... then phase to phase BANG instead of 380 V Fortunately only 16 A fuses on that circuit, so only damage was charred multimeter. Think if someone were dumb enough to measure something protected with 250 A fuses... Like if he forgot his own meter in car and sees nice looking meter lying somewhere and actually believes the "CAT III 600V" text printed on it. "Well, this meter should do the job" and then it shorts in his hands at about 1/10 voltage CAT III meter should withstand. -E
From: David L. Jones on 7 Mar 2010 15:42 Jim Yanik wrote: > "Mark Zacharias" <mark_zacharias(a)sbclobal.net> wrote in > news:0072e6b7$0$2885$c3e8da3(a)news.astraweb.com: > >> "Jan Panteltje" <pNaonStpealmtje(a)yahoo.com> wrote in message >> news:hn0430$v62$1(a)news.albasani.net... >>> On a sunny day (Sun, 7 Mar 2010 16:21:35 +1100) it happened "David >>> L. Jones" >>> <altzone(a)gmail.com> wrote in <BJGkn.72617$K81.22212(a)newsfe18.iad>: >>> >>>> The title says it all really. >>>> See what happens when I try to destroy Fluke's new 28-II >>>> Multimeter: http://www.youtube.com/watch?v=qlA7-fh5nDQ >>>> >>> >>> Well, why bother, I have a 5 Euro multimeter, >>> if it blows I will get an other 5 Euro multimeter. >>> But it says it is 100% protected. >>> Why burn so many $$$$$$$$$$$$$$$$? Just for the show??? >>> Makes no sense to me. >> >> >> If you had seen some of his earlier videos, you'd know why. By all >> means use your cheaper meter if you like, but there is such a thing >> as, "measurement confidence". If your work is important, perhaps with >> lots of money or even someone's life potentially at stake, which >> meter would I rather rely on? I think the answer is pretty obvious. >> I own meters large and small, el cheapos and better ones. But when I >> really need to know, right now and with no bullshit, I reach for the >> Fluke. >> >> Mark Z. >> >> > > what's the point of destroying a multimeter? Err, it's FUN? Dave. -- --------------------------------------------- Check out my Electronics Engineering Video Blog & Podcast: http://www.eevblog.com
From: Baron on 7 Mar 2010 15:45 Jim Yanik Inscribed thus: > "Mark Zacharias" <mark_zacharias(a)sbclobal.net> wrote in > news:0072e6b7$0$2885$c3e8da3(a)news.astraweb.com: > >> "Jan Panteltje" <pNaonStpealmtje(a)yahoo.com> wrote in message >> news:hn0430$v62$1(a)news.albasani.net... >>> On a sunny day (Sun, 7 Mar 2010 16:21:35 +1100) it happened "David >>> L. Jones" >>> <altzone(a)gmail.com> wrote in <BJGkn.72617$K81.22212(a)newsfe18.iad>: >>> >>>>The title says it all really. >>>>See what happens when I try to destroy Fluke's new 28-II Multimeter: >>>>http://www.youtube.com/watch?v=qlA7-fh5nDQ >>>> >>> >>> Well, why bother, I have a 5 Euro multimeter, >>> if it blows I will get an other 5 Euro multimeter. >>> But it says it is 100% protected. >>> Why burn so many $$$$$$$$$$$$$$$$? Just for the show??? >>> Makes no sense to me. >> >> >> If you had seen some of his earlier videos, you'd know why. By all >> means use your cheaper meter if you like, but there is such a thing >> as, "measurement confidence". If your work is important, perhaps with >> lots of money or even someone's life potentially at stake, which >> meter would I rather rely on? I think the answer is pretty obvious. >> I own meters large and small, el cheapos and better ones. But when I >> really need to know, right now and with no bullshit, I reach for the >> Fluke. >> >> Mark Z. >> >> > > what's the point of destroying a multimeter? > Advertising ! -- Best Regards: Baron.
From: Franc Zabkar on 7 Mar 2010 19:25
On Sun, 7 Mar 2010 16:21:35 +1100, "David L. Jones" <altzone(a)gmail.com> put finger to keyboard and composed: >The title says it all really. >See what happens when I try to destroy Fluke's new 28-II Multimeter: >http://www.youtube.com/watch?v=qlA7-fh5nDQ > >Dave. My AUD$3K Fluke PM97 failed from normal use. The batteries wouldn't hold a charge from day 1, the AC adapter failed after only a short time, one of the probes failed soon after, and then the meter itself failed. The service manual was missing the power supply page (maybe some Fluke/Philips tech used it and forgot to replace it). One day I'll step on it ... again, and again, and again. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |