The Keithley DMM7510 autoranges to the next higher range at 0.12V, 1.2V, 12V, 120V etc. Sometimes I need to measure 19.000V with precision and the meter would put me on it's 100V range.
The Keithley 2002 doesn't jump to the next range until 0.21V, 2.10V, 21.0V, 210V etc. Very few meters behave like this, most jump to the next higher range sooner than I like. -----Original Message----- From: volt-nuts <[email protected]> On Behalf Of Brian Smith Sent: Sunday, June 30, 2019 9:36 PM To: Discussion of precise voltage measurement <[email protected]> Subject: Re: [volt-nuts] What are the best of the low(ish) cost 8.5 digit multimeters? I have used the KE2002 and the DMM7510. I prefer the DMM7510. I have used the DMM7510 to gather data for my qty 2 Fluke 731B volotage standards. The DMM7510 can show p-p variations of 0.25 ppm over days of continuous measurement. If I was spending my money, I would buy a DMM7510. Brian Smith On Sun, Jun 30, 2019 at 7:45 PM Steve - Home <[email protected]> wrote: > Unfortunately Ametek at Farnborough (where the 7081 was designed and > manufactured by Solartron) are no longer calibrating the 7081. I was > by there about the time your meters were being calibrated, Joe. I’m > not sure they’re even in business now as the last time I was by the > business park in February this year their sign was gone. > > Steve > WB0DBS > > > > > On Jun 30, 2019, at 8:20 PM, J. L. Trantham <[email protected]> wrote: > > > > David, > > > > Have you considered the Solartron/Ametek 7081? > > > > If I'm not mistaken, you posted some images of their EPROM's several > years ago. > > > > It's slow sampling at 8.5 digit resolution but seems user friendly > > and, > at least several years ago, was able to be calibrated by Ametek in > England. I sent two over there for calibration. > > > > Good luck. > > > > Joe > > > > -----Original Message----- > > From: volt-nuts [mailto:[email protected]] On Behalf > > Of > Dr. David Kirkby > > Sent: Sunday, June 30, 2019 6:18 PM > > To: Discussion of precise voltage measurement > > Subject: [volt-nuts] What are the best of the low(ish) cost 8.5 > > digit > multimeters? > > > > I would like to get an 8.5 digit multimeter, but an Agilent, Fluke > > or Keithley is outside my budget. There are quite a few other 8.5 > > digit multimeters around, but I was wondering what is the best of > > the cheaper ones. I really don’t want to spend more than £1000 (GBP) > > and preferably less. > > > > There’s a Datron/Wavetek 1271 on eBay at a price of £2450 or offer, > > but recent ones sold in the UK have gone for £800. I have emailed > > the seller > of > > that, as I have bought from him before. He can sometimes be quite > flexible > > on prices, especially if one deals outside eBay. > > > > I want to avoid buying something that is impossible to get > > calibrated, > but > > I can’t afford to buy a 3458A or similar. > > > > Dave > > -- > > Dr. David Kirkby, > > _______________________________________________ > > volt-nuts mailing list -- [email protected] To unsubscribe, > > go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] To unsubscribe, > > go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- [email protected] To unsubscribe, go > to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
