[volt-nuts] 3457A battery replacement at Keysight - not
Electronics and Books
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Sat May 26 09:21:28 EDT 2018
You can buy litium batteries at conrad. They have axial wires and fit into allmost all hp , philips equipment. The length is half an aa cel. As the current is so low, only the leakage counts. I never understand why they charge so much for calibration. It is for equipment with a stability of 30 ppm. A good calibrator with voltage and restistance standard give you about 3 ppm. I use fluke 5700 with datron voltage an esi resistance standard. Yes the voltage was calibrated. The resistance is difficult for the reason that only a national standard lab has a better uncertenty. Use to had 2 of these standards and the difference i found was in the order of 0.1 ppm of actual value compared to each other.
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Op vr, mei 25, 2018 om 1:03 schreef Dr. David Kirkby<drkirkby at kirkbymicrowave.co.uk>: On 24 May 2018 at 23:43, Laurence Motteram <
lmotteram at scientific-devices.com.au> wrote:
> Hello Dave,
> Farnell UK have these; http://uk.farnell.com/w/c/
> Best Regards,
> Laurence Motteram
> Calibration & Service Manager
> Scientific Devices Australia
> Ph: +61 (0)3 9569 1366
> M: +61 (0)425 765 019
> lmotteram at scientific-devices.com.au
Thank you, but I believe they are the wrong size. They are 2/3AA, but the
one needed is I believe 2/3A. I know what a AA cell is, but I must admit
I've never come across an A cell, but I guess its bigger than a 2/3A.
My biggest concern about buying batteries is getting counterfeits. That's
why I would rather stick with a reputable supplier like Farnell, RS etc.
But I can't find anything local.
look to be battery specialists in the UK, but I have never come across them
before. I have emailed them, along with Panasonic directly. I've said to
Keysight, if they will sell me the battery, I will buy it from them. I know
Keysight is not going to be a cheap place to buy batteries, but given the
difficulty in getting one, I would not mind buying directly from Keysight.
But I am not paying nearly £300 for them to fit a battery.
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