Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
Specmaster:
--- Quote from: bd139 on May 23, 2018, 06:33:00 pm ---Variac isn’t going to be voltage stable enough. Mains is all over the shop.
--- End quote ---
Yes you're right, I have a look at that in more detail when I get to doing the AC Amps and I'll get 300mA out of my wimpy Chinese FG (could be the next item in my tool kit to be replaced) it seems almost everytime I use I have to fiddle with it to get the membrane buttons to respond correctly :palm:
Specmaster:
Wow, I know have a fully functioning meter that not only checks out against my calibrator but even more importantly agrees with my other meters give or take the odd least significant digit by 1 or 2 counts as these are often bouncing around due to noise etc, I'm not at all bothered by that :phew:
Thanks to bd139 for his assistance and no I don't think I'll bother getting this checked over by any other Lab because I doubt its going to be worth it and also of course apart from RS the only other lab remotely near me is Calmet, who say that can do it but it is not known to how many digits, unless bd139 does as he spoke to them? I have personally spoken to quite a few labs, many declined because they could not do it, and there was 3 others that claimed that they could calibrate it to either 2 or 3 digits and if I wanted 4 digits, then 1 on those said that they could farm it out a sister company but none said they could do a full 5 digit cal.
Should I email the lab that returned it uncalibrated and FOC because they couldn't get it to retain the calibration and tell them that what they couldn't do I've managed to do? >:D
bd139:
I would shitpost on trustpilot :)
I’m going to get mine calibrated at some point via calmet. Urgency is low at the moment though.
tautech:
--- Quote from: mnementh on May 23, 2018, 05:56:10 pm ---I believe tgzz (or was it tautech?) mentioned earlier that the default is 3V, and that you can Cal at 1/3 scale (1V), but inaccuracy would be 3 times as great at the high end of the scale. :bullshit: You would have to bring the displayed number down to read 1V, which I think will also be LOTS of button clicks... :scared:
mnem
Maybe we should do a musical number now...
--- End quote ---
Twasn't me.
Specmaster:
Many thanks for your help. The AC Amps don't have to be calibrated if you have the DCV, DCA and resistance ranges and the ACV all done but the way I read it needs to be done is if it fails the performance testing.
I might, if I feel particularly flush at some point get it done at Calmet if they can do it to 5 digits, it would then demonstrate just how good the tools that I have are ;) problem is that then I'd have to get all the others re calibrated to reflect the 3478A, if it came back different, does it ever stop :palm:
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