gbusg at comcast.net
Wed Dec 30 19:18:05 UTC 2009
I maintain multiple standards for voltage and resistance. Before 2006 I
performed intercomparisons daily. After that I dropped back to monthly. I'm
not currently doing intercomparisons, so I need to get caught-up and get
back to doing that.
I send one 10Vdc std and one 10k ohm std to a primary standards lab every
few years. I trend them based on their historical data.
The main reason I maintain 10Vdc and 10k ohms is to verify those cardinal
points on my HP 3458A DMMs - and for artifact cal of them when necessary.
----- Original Message -----
From: "Randy Scott" <scottr9 at yahoo.com>
To: <volt-nuts at febo.com>
Sent: Wednesday, December 30, 2009 9:53 AM
Subject: [volt-nuts] Poll
I'm curious to know if people are maintaining their own standards of voltage
and resistance. If so, do you have a single standard or multiple? How
often do you send your standard(s) for calibration? How often do you
perform comparisons between your multiple standards?
Do you maintain a standard "just because" or do you use it to calibrate
other equipment (e.g., artifact calibration of a multimeter)?
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