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Author Topic: Teardown: Standard Resistors  (Read 25385 times)

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Online CalMachine

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Re: Teardown: Standard Resistors
« Reply #125 on: May 20, 2017, 12:14:46 PM »
Ok. Let's communicate offline and get some details worked out.

We can start a new thread and post any results if you want to do some detailed comparisons of portable standards.

Sounds good! And yes, I would like that very much. :-+
 

Offline Vgkid

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Re: Teardown: Standard Resistors
« Reply #126 on: May 20, 2017, 12:30:26 PM »
I look forward to reading about your 242 endeavors.
I have a feeling E.G. Pettis will chime in. ;D  :popcorn:
If you own any North Hills Electronics gear, message me.
 

Offline Edwin G. Pettis

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Re: Teardown: Standard Resistors
« Reply #127 on: May 20, 2017, 12:34:36 PM »
The SR-1010 10K does not need to be trimmable, it is directly compared to the SR-104 for each step and the readings noted, the trimmable SR-1010 is optional.

Okay, I chimed in......
 

Online CalMachine

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Re: Teardown: Standard Resistors
« Reply #128 on: May 20, 2017, 12:46:44 PM »
The SR1010 I picked up a few months ago is the MTS version, and I've already trimmed each step to our Ohm Labs 10k standard resistor.  If I remember correctly (I'm not at the lab), but I think our Ohm Labs 10k standard has drifted about 2ppm over the last 5 years.  So it's holding pretty strong!   I plan on shifting it to our working standard once I can get a SR104 in our hands with sufficient data to use as our lab's primary standard.

I tore it down, slightly, and posted pics on page 4 for those interested!   ;D
« Last Edit: May 20, 2017, 12:51:21 PM by CalMachine »
 

Online ManateeMafia

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Re: Teardown: Standard Resistors
« Reply #129 on: May 20, 2017, 01:09:57 PM »
I thought you partially tore down your Ohm Labs 10k standard. I was disappointed they weren't there.   :-DD

Which model do you have? Is it the 104 or 204?
 

Online CalMachine

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Re: Teardown: Standard Resistors
« Reply #130 on: May 20, 2017, 01:16:00 PM »
I thought you partially tore down your Ohm Labs 10k standard. I was disappointed they weren't there.   :-DD


:-DD   No way I'm opening up our current, freshly cal'd, 10k standard.

Which model do you have? Is it the 104 or 204?

We have the 100 (1 amp version) and 104.  I wish we had the 200 series!  We were really small back then when they picked them up, before I was around. 
 

Online ManateeMafia

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Re: Teardown: Standard Resistors
« Reply #131 on: May 20, 2017, 01:28:17 PM »
A couple of years ago I got a quote on the 200 1 ohm model and the price was $3400.00
 


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