Hello Bob,
the instrument will be your least worries.
with 20-80ppm/K you will need a very well stabilized (0.1K) temperature
environment for the references.
Otherwise you will not detect ageing but the temperature of your
environment.
A volt nut would only use the LM329 from the list
Hi,
I have an 8.5 digit wavetek, and a bunch of Solartron and wavetek 7.5
digit meters, but it seems to me that doing justice to the 329
references is going to need stable wirewound or foil resistors, and a
few months will be only just long enough.
MK
On 10/03/2014 07:12, Andreas Jahn
On 9 Mar 2014 23:39, Jan Fredriksson j...@41hz.com wrote:
I have a batch of voltage references ICs on the shelf, several thousand of
each type. They all have date codes of around 1983, ie 30 years old. It
would be great to have some drift data on them.
Since you have so many, it would be
Thomas wrote:
If I send a 732A to Fluke and have it calibrated, and you stop by
with yours shortly after mine returns, has a day or so to settle,
and appear correct with my 3458A, you could then calibrate your 732A
using of mine and feel fairly confident you standard is also a few
PPM from
I have to side with Tom on this one. Accreditation only provides
independant verifcation of processess and proceedures. It provides
increased confidence (in both the human and statistical senses) in
the service provided. It does not prove that your standard is correct.
Documentation and
Aging is beneficial because it allows a part to physically
relax into a shape that is appropriate for the way it is
being operated... So, if a zener is going to be operated
with no bias current, and at room temperature, sitting on
a shelf for 30 years might be a plus... But not so much
if the
Charles thanks for an engaging dialog, I think we generally agree, but have
different interpretations of several words. I see calibration as a set of rules
and procedures that a group has agreed upon, that when followed will allow
tractability and repeatability to an agreed upon standard. And
Hi gang,
Thanks for the suggestions as to what type of calibrator to get.
I mostly want a stable precision variable voltage reference for what I do,
but a current/ ac voltage / resistance standard would be nice, so I can
definitely see this being addictive!
I have already found that
