Author Topic: Replacement Rotary switch in a Fluke 720a and photos  (Read 229 times)

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Offline NANOJOLTSTopic starter

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Replacement Rotary switch in a Fluke 720a and photos
« on: August 16, 2024, 10:16:07 pm »
Here's a comparison of a rotary switch from a (Fluke 720a) and a (Leeds Northrup) rotary switch.

I replaced a broken rotary switch (S8) in a (Fluke 720a) with a Leeds Northrup rotary switch.

Fluke switch has 4 leaves?  and Leeds switch has 3 leaves?.

You think it will work?
 

Online Vgkid

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Re: Replacement Rotary switch in a Fluke 720a and photos
« Reply #1 on: August 16, 2024, 11:01:53 pm »
There should not be a big problem, as long as all of the connections are good. The L&N type 31 switches are good.
I did a test on one , a few years ago.
https://www.eevblog.com/forum/metrology/4-wire-switch-selectable-resistance-standard/msg1172561/#msg1172561
If you own any North Hills Electronics gear, message me. L&N Fan
 

Offline NANOJOLTSTopic starter

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Re: Replacement Rotary switch in a Fluke 720a and photos
« Reply #2 on: August 17, 2024, 12:43:09 am »
The Fluke 720a seems to have had failing/broken rotary switches S2 and S8.
Photo of manual notice to than affect, dated 3/97.
 

Online Vgkid

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Re: Replacement Rotary switch in a Fluke 720a and photos
« Reply #3 on: August 17, 2024, 01:56:21 am »
Unfortunately it looks like multi-tech industries website is down
 :(
If you own any North Hills Electronics gear, message me. L&N Fan
 


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