[volt-nuts] Poll

[Greg Burnett]

Hi Randy,

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.

Best,
Greg


----- 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


Nuts,

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)?

Thanks.

Randy.




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