Hi Tony
Absolute Calibration in the UK charged 144UKP+VAT to measure a SR104. This included pickup and dropoff using their own vehicle! Their stated capability is to +/- 0.24ppm Very happy with them so far, they can also do zener measurements, e.g 10V to within 0.23ppm, for similar price. John Tony Holt <[email protected]> writes: [...] > > Does anyone know how much it would cost to get a 10k resistor measured > to < 2ppm in the UK by a calibration company? >Does anyone know how > much it would cost to buy a 1% Vishay VH102Z/VHP101 or similar with a > < 2ppm measurement? > > Edwin Pettis quoted me $7.28 for one 10k resistor ($5.46 for 11 to 24) > so they could be a viable way of getting accurately (approx 1ppm) > measured resistors. The higher TCR, 3ppm/C would increase the > uncertainties though as it would require them to be used within 1C or > so of that when measured by Mr Pettis, but he can select for 1ppm TCR > or less for an extra $2 which would easily be justified for this > purpose. Obviously the uncertainties due to transport shocks/vibration > (although Mr Pettis claims they are very rugged) and drift related to > the time in transport would need to be considered. > >>> On Aug 11, 2015, at 9:00 AM, [email protected] wrote: >>> >>> Edwin Pettis states his resistors drift is typically better than 2ppm in >>> the first year, so pretty good but you'd still need to have them >>> measured every few years. If you have to get them professionally >>> calibrated it may be cheaper to buy the Vishay parts. Edwin could >>> provide the measured values as could Vishay if you bought directly from >>> them. >> _______________________________________________ -- John Devereux _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
