[volt-nuts] Reference Calibration Options - Solartron 7081 andFluke 731B and 335A

[gbusg]

Hi Joe,

Another thing to ask AMTEK is whether or not their 7081 calibration always 
includes adjustment? Or do they only adjust if a parameter reaches a 
guardband limit or spec limit?

Obviously for your purposes it would be nice if they adjusted the box back 
to nominal. But that's not a typical service for most T&M calibrations.

The neat thing about the "golden" calibration (Loveland Standards Lab Cal) 
for Agilent's 3458A is that it *always* includes adjustment of the box back 
to nominal. But that turns out to be more feasible in the case of the 3458A 
because there are only 3 adjustments for the total DCV, DCA and ohms 
functions: CAL 0, CAL 10 and CAL 10k. (Note: This *always adjust" policy 
only applies to the "golden" 3458A cal, not for example the "silver" cal.)

Let us know what you find out from AMTEK regarding their 7081 cal.

Thanks,
Greg


----- Original Message ----- 
From: "J. L. Trantham" <jltran at att.net>
To: <volt-nuts at febo.com>
Sent: Wednesday, September 07, 2011 8:58 PM
Subject: [volt-nuts] Reference Calibration Options - Solartron 7081 andFluke 
731B and 335A


I have explored the options for calibration of my 'reference' devices.

The Solartron 7081 calibration is available in Oak Ridge, TN, at Advanced 
Measurement Technology http://www.ametek-online.com/ for $800.00.  They are 
the US branch of the company that owns Solartron, if I understanad 
correctly.  I have emailed with a number of questions regarding the specific 
details of the calibration and documents supplied but have not received a 
reply so far.  I suspect the Service Coordinator I emailed is busy chasing 
down the answers for my many questions.

For the 731B, Fluke offers a Performance Test for $229, Calibration, 
Traceable, W/O Data for $245, Calibration, Z540 Traceable, W/O Data for $259 
and Calibration, Z540 Traceable, W/ Data for $333.  There is no repair 
service available.

For the 335A, there is no Performance Test option and there, also, is no 
repair service available.  However, for the remainder, it is $473, $505, and 
$662 respectively.

My thought is to get the 7081 calibrated and one of the 731B's.  The 'white 
face' 731B is the later unit with the modifications hand written in the 
manual downloaded from the Fluke website already in place.  The 'black face' 
unit is older and does not have these modifications installed.  I'm thinking 
the 'white face' unit would be the best to get calibrated.

Once these are done, I can then do the 'calibration' of the 335A and  the 
other 731B myself.

Any thoughts about this plan, which calibration to choose, or other options 
that might be available?  Also, any thoughts about the potential to need 
'repair' of these Fluke units when sent for calibration?

Thanks in advance.

Joe
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