[volt-nuts] Economical Standard Calibration

[Dallas Smith]

I'm in west Michigan, Holland. As far as accuracy the manual states  ±10ppm for 30 day or ±30ppm per year for the 10v output .
 I need it to calibrate my (modified with reference oven)  EDC (Electronic Development Corp.) model 520a. Which I calibrate my Fluke 510a with a Fluke 720 voltage divider. I use the 510a to calibrate DB voltage for my audio test equipment. I also have a Fluke 8505, Fluke 8800 and Data Precision Model 2500.
 
So if I can achieve ±50ppm per year this would be sufficient, but better would be nice since they may not be calibrated every year.
 
I’m just a hobbies audio engineer that designs audiophile equipment and other interesting projects not related. So sending it to fluke is not economical for me.
 
Since Joe suspended  operations for his SVR-T with low cost calibration. I purchased one and put it in a 35°C oven and it seems to outperform the Fluke 731b as compared to my 8505 for drift. I will have three 10 volt references in my lab to track uncertainty.
 
So are there any calibration labs that will calibrate my 731a and my home brew reference’s?
 

 

> Date: Sat, 8 Mar 2014 16:00:41 -0700
> From: nova at npgcable.com
> To: volt-nuts at febo.com
> Subject: Re: [volt-nuts] Economical Standard Calibration
> 
> Dallas,
> 
> How accurately do you need the 731B set?
> 
> Where are you located? I am in Flagstaff, Arizona
> 
> I have four 731s, and I know how to calibrate them.
> 
> I also have a 3458A and a Fluke 7001 that goes to Fluke for calibration soon. I
> do not know the turnaround time.
> 
> Joe
> 
> 
> On 3/8/2014 3:13 PM, Dallas Smith wrote:
> > Good point, not a meter a Fluke 731b transfer standard. no access to local labs.
> > 
> > On 3/8/2014 4:54 PM, Dr. David Kirkby wrote:
> >> On 8 March 2014 21:44, Dallas Smith <dosmith at outlook.com> wrote:
> >>> Hi nuts,
> >>> This is my first post. The knowledge from contributors is amazing.
> >>>
> >>> Was wondering where one could economically get our_voltage standards
> >>> calibrated_
> >>> to some traceable standard since Joe Gellar suspended operations for his
> >>> SVR-T?
> >>>
> >>> voltagestandard.com doesn't sell a 10v references and two of his 5v
> >>> Vref5-002 are costly.
> >>>
> >>> Dallas
> >> It would be worth stating what meter you have. Clearly what is going
> >> to be useful for a 3.5 digit meter, will not be for an 8.5 digit one.
> >>
> >> Dave
> >> _______________________________________________
> >
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