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Electronics Forum / Basics / February 2007Extech DMMs
Anyone have any experience with them? Are they easy to zap? Specs and prices look good enough, what say the masses? I'm considering the MM560 here: http://www.extech.com/instrument/products/alpha/MM560_570.html 50,000 count/.01uA resolution/US$229 tia >Anyone have any experience with them? Are they easy to zap? Specs and >prices look good enough, what say the masses? I'm considering the MM560 [quoted text clipped - 4 lines] > >tia I haven't used their dmm's (I like Fluke) but I have several of their other gadgets - IR thermometer, air flow meter, LCR meter - and they all seem very good. John > I haven't used their dmm's (I like Fluke) but I have several of their > other gadgets - IR thermometer, air flow meter, LCR meter - and they > all seem very good. Yeah, Fluke is nice, but maybe a bit too rich for me plus I'd like a bit more frequency counting response than 200kHz, well actually I'd like allot more. ;-) Trying to keep things in the $200 area. Thanks for sharing your experience. > Anyone have any experience with them? Are they easy to zap? It claims "600V input protection on all functions (1000V on Voltage)", so that would mean well protected on ohms, diode, and cap ranges etc Dave :) >> Anyone have any experience with them? Are they easy to zap? > > It claims "600V input protection on all functions (1000V on Voltage)", > so that would mean well protected on ohms, diode, and cap ranges etc Thanks so much for pointing that out. My Micronta spoiled me all these years by surviving such things without flinching. It's a concern for me as I'd really hate to kill an expensive meter by making a stupid mistake. It's pretty much what happened to all my old analog meters, AC in Ohms mode.....poof.... As you noticed, I started a new thread since the other was old and getting a bit OT. ;-) > >> Anyone have any experience with them? Are they easy to zap? > [quoted text clipped - 9 lines] > As you noticed, I started a new thread since the other was old and getting a > bit OT. ;-) It was starting to P(r)ong a bit! An older thread had some support for the ExTech: http://groups.google.com.au/group/sci.electronics.basics/browse_frm/thread/5534e 068a5413dd7/41d9d5e4030c8442? And look who was there too, none other than Roy L. Fuchs, a.k.a MassiveProng Dave :) >>>> Anyone have any experience with them? Are they easy to zap? >> [quoted text clipped - 12 lines] > > It was starting to P(r)ong a bit! Exactly > An older thread had some support for the ExTech: > http://groups.google.com.au/group/sci.electronics.basics/browse_frm/thread/5534e 068a5413dd7/41d9d5e4030c8442? > > And look who was there too, none other than Roy L. Fuchs, a.k.a > MassiveProng Looks like "igor The Terrible" likes Extech. I hate to say it, but if the Protek 6800 could measure DC current with better than 1uA resolution, I'd be tempted. Most of it's other specs look pretty decent, excepting the battery life of course. ;-) Since I'm quickly approaching the $300 mark, I'm rethinking this. In this price range I should probably be looking at equipment I don't already have, like a logic analyzer. I think I had less trouble picking a wife. ;-) > Anyone have any experience with them? Are they easy to zap? Specs and > prices look good enough, what say the masses? I'm considering the MM560 [quoted text clipped - 4 lines] > > tia I've been very pleased with their LCR meter. If buying a new DMM, I would consider Extech. Chuck > http://www.extech.com/instrument/products/alpha/MM560_570.html We have one of these at work: http://www.extech.com/instrument/products/400_450/400series_EX450_EX470.html It's a fine IR thermometer, but it's a sucky DMM. Everyone avoids it like the plauge in favor of fluke meters. We replaced the leads on it a few times before realizing it was just a flakey ohmmeter. If not for that experience, I'd probably own one, since I've seen that model for under $125. It's a shame, the specs on the 470 (450 + LCR) look nice.  SignatureBen Jackson AD7GD <ben@ben.com> http://www.ben.com/ >> http://www.extech.com/instrument/products/alpha/MM560_570.html > [quoted text clipped - 9 lines] > model for under $125. It's a shame, the specs on the 470 (450 + LCR) > look nice. Ouch, that's not good. Was it problematic from the start? Could it have been damaged/dropped? What do you mean by flakey; inconsistant, slightly off or wildly off? >> It's a fine IR thermometer, but it's a sucky DMM. Everyone avoids it >> like the plauge in favor of fluke meters. > > Ouch, that's not good. Was it problematic from the start? Could it have > been damaged/dropped? What do you mean by flakey; inconsistant, slightly > off or wildly off? It's probably been a year since I used it to measure anything, I don't recall. It was relatively new when I used it (it was purchased for the IR thermometer) so I don't think it had been mishandled. Whatever it did wrong was enough that I questioned the results and got another meter. Could be an anomaly -- my sample size is 1! SignatureBen Jackson AD7GD <ben@ben.com> http://www.ben.com/ |
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