Re: [volt-nuts] Would you be concerned if the manufacturer does not have an uncertainty budget, so can't provide uncertainties in a calibration?

2018-04-23 Thread Florian Teply
Am Mon, 23 Apr 2018 23:59:57 +0100 schrieb "Dr. David Kirkby" : > On 21 April 2018 at 09:32, Florian Teply wrote: > > > Am Fri, 20 Apr 2018 14:37:22 +0100 > > schrieb "Dr. David Kirkby" : > > > > > The columns below, from left to right are

Re: [volt-nuts] Would you be concerned if the manufacturer does not have an uncertainty budget, so can't provide uncertainties in a calibration?

2018-04-21 Thread Florian Teply
Am Fri, 20 Apr 2018 14:37:22 +0100 schrieb "Dr. David Kirkby" : > 2) Measure the resistors in the 16340A. What puzzles me here, is that > when I had another 4339B calibrated, the limits on measuring those > resistors were symmetrical about the nominal values of 1e6, 1e7, 1e8, > 1e8, 1e10 and 1e11

Re: [volt-nuts] Help needed identifying triaxial connector on HP 4339B high resistance meter - measures to 1.6 x 10^16 ohms.

2018-02-17 Thread Florian Teply
Hi David, Am Sat, 17 Feb 2018 15:32:15 + schrieb "Dr. David Kirkby" : > In order to use the meter, I would obviously need to be able to make > connections to it. > > Is there anyone here that knows what the triaxial (tri-axial?) > connector in the attached pictures ? One picture is of the fe

Re: [volt-nuts] low emf solder

2016-10-31 Thread Florian Teply
Am Sat, 29 Oct 2016 20:41:48 +0200 schrieb Attila Kinali : > On Sat, 29 Oct 2016 15:27:49 +0100 > "Dr. David Kirkby (Kirkby Microwave Ltd)" > wrote: > > > But if one could use copper as the bond wire, rather than gold > > which is quite common, then it would give you very little thermal > > EMF

Re: [volt-nuts] low emf solder

2016-10-31 Thread Florian Teply
Am Sun, 30 Oct 2016 01:05:56 -0500 schrieb David : > Sounds more like copper free copper than oxygen free copper. To be fair, one does not exclude the other. And nobody specified to what the 100% is supposed to apply to. Being oxygen free does not necessarily imply that it can't be a highly resis