[volt-nuts] Solartron 7081, etc.

[J. L. Trantham]

Robert,

I found 'Solartron Analytical', part of Ametek, with a service and
calibration facility in Oak Ridge, TN.  They did not list the 7081
specifically but I sent them an email Saturday inquiring as to whether they
still provided calibration for the 7081.

We'll see what response I get.

Joe

-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of Robert Atkinson
Sent: Monday, September 05, 2011 6:45 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Solartron 7081, etc.

 
I guess you are in the USA, but here in the UK Solartron still calibrate
these. You could try the USA office.

Robert G8RPI.

--- On Sat, 3/9/11, J. L. Trantham <jltran at att.net> wrote:


From: J. L. Trantham <jltran at att.net>
Subject: Re: [volt-nuts] Solartron 7081, etc.
To: "'Discussion of precise voltage measurement'" <volt-nuts at febo.com>
Date: Saturday, 3 September, 2011, 13:51


I really appreciate all the insight this group has provided.  Now the
question is where to get the calibrations done?  I will contact Fluke about
the 731's but what about the 7081?

I am told that the 7081 is 'simple', assuming you have a RS232 connection to
the meter, the meter is placed in 'CAL' via the front panel key switch, and
you feed it the proper signals.  Is there a calibration house that does
that?  I am in NW Florida.  

Bill Ezell sent me a calibration program for use with the 7081 but I would
have to take the meter and a computer to the calibration facility to let
them supply the 'standards' while I sequence the meter.

Anyone done this?  Any calibration facilities do this for a 7081?

Thanks,

Joe

-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of Dick Moore
Sent: Friday, September 02, 2011 11:58 PM
To: volt-nuts at febo.com
Subject: Re: [volt-nuts] Solartron 7081, etc.


Hi Joe -- get the 7081 calibrated -- it's (in my opinion) a (much) better
instrument than the 3457 and will give you good transfer results for all
kinds of measurements. 

If you can also get the black 731B cal'd do that too, just because it is so
stable. 

My experiences with Fluke 332 (same as 335 without the built-in diff. meter)
has not been so happy -- I've had a B and a D and found they will hold the
cardinal point pretty well, but the various divider errors move all over the
place. Likewise, I've not been too happy with the 3457s I've owned as far as
linearity is concerned either. Back when I had a Fluke 5440B and my 3458, I
learned that the 5440 was extremely good and so was the 3458 -- they agreed
about everything. The 3457 -- not so much. Again, like the 335, they held a
cardinal point mostly OK, but linearity was not as good -- all in spec, mind
you, but....

Best,
Dick Moore


On Sep 2, 2011, at 6:00 PM, volt-nuts-request at febo.com wrote:

> Message: 6
> Date: Fri, 2 Sep 2011 19:36:42 -0500
> From: "J. L. Trantham" <jltran at att.net>
> >>
> Now, the next question.
> 
> If you were to spend the money to get something calibrated, what would 
> you choose?


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