Author Topic: High end Meters and burden voltage  (Read 13304 times)

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Offline Freighternut

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Re: High end Meters and burden voltage
« Reply #25 on: November 29, 2011, 08:05:10 am »
Looks like I am going to need a good set of shunts for the Agilent 34410A.

Agilent have a reasonably accurate 0.001 ohm shunt for 0 - 30 Amps giving 1 mV per amp .

34330A Current shunt: http://www.home.agilent.com/agilent/product.jspx?nid=-536902470.536880350.00&cc=NZ&lc=eng

 I would be interested in finding a shunt more suitable for lower currents (0-10 amp) . Can anybody point me to a supplier of meter shunts preferably in the same format as the Agilent shunt (plugs directly into the meter jacks and provide banana sockets for the high current side). I have Googled this but not found anything in  this format yet.

Thanks for every bodies input it has been most interesting and informative.
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alm

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Re: High end Meters and burden voltage
« Reply #26 on: November 29, 2011, 12:57:59 pm »
Fluke has the A40 series. It might be expensive. Double check if the banana plug spacing matches your meter, I think they might be at some odd spacing.
 

Offline Zero999

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Re: High end Meters and burden voltage
« Reply #27 on: December 02, 2011, 05:46:31 pm »
My 34401A measured 0.86v @2.01A  and it climbed slowly as something was warming up.
That implies a poor temperature coefficient.

Assuming you measured a fairly stable constant current, did the reading also increase as it warmed up?

Didn't surprise me, copper for the internal wiring and a +ve temperature coefficient for a fuse is probably good not poor. There was 1.7W warming up something.
Yes, you'e probably right, the resistance of the fuse dominates at higher currents.
 


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