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Products => Test Equipment => Topic started by: Nullarbor on November 30, 2019, 11:22:28 pm

Title: Fluke 87V component has gone "volcanic" - with what to replace?
Post by: Nullarbor on November 30, 2019, 11:22:28 pm
Hello everyone. I could not find info on this component so far.

I've searched quite a lot here but have not read everything by any means - is that even possible?

I usually use the Fluke 87V for measuring DC up to 16 volts and currents @ DC 30-160mA.
I did manage to cross some wires and got a short circuit for a few moments.
The fuse popped, so I went about changing it. Doing that, I spotted this "volcanic" component. Pictures attached.

My question: what component is it and what value, tolerance etc. does it have? I'd like to replace it.

My assumption is that its a shunt resistor, but since "assumptions make an ass out of you" , I'd rather
ask way more knowledgable people.

The Fluke is still working fine though after changing the fuse. That has me scratching my head a bit.

Thank you, Cheers!
Title: Re: Fluke 87V component has gone "volcanic" - with what to replace?
Post by: shakalnokturn on November 30, 2019, 11:54:33 pm
Should be the current shunt for the lower Amps input.
About 3' of google would have told you it's a 1ohm, 1% resistor. The manufacturer's name is on it, you'll have to do a little research if you want to find the exact model.
Title: Re: Fluke 87V component has gone "volcanic" - with what to replace?
Post by: gslick on November 30, 2019, 11:57:27 pm
Possibly a Vishay Dale WSR2 "Power Metal StripĀ® Resistor"

https://www.vishay.com/docs/30101/wsr.pdf (https://www.vishay.com/docs/30101/wsr.pdf)

If that is R5 one Fluke 87V Multimeter Service Manual has these specifications:
1-OHM
+-1%
2W
75 PPM/C

For example: https://www.mouser.com/Search/Refine?Keyword=WSR21R000F (https://www.mouser.com/Search/Refine?Keyword=WSR21R000F)
Title: Re: Fluke 87V component has gone "volcanic" - with what to replace?
Post by: Nullarbor on December 04, 2019, 10:43:24 pm
Thank You! That's sorted now.