Author Topic: Fluke i200 Amp clamp with oscilloscope?  (Read 503 times)

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Offline NivrTopic starter

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Fluke i200 Amp clamp with oscilloscope?
« on: October 08, 2020, 12:43:52 pm »
Hey,

As stated in the title, I've got a Fluke i200 AC clamp (not i200s)


It outputs 1mA per every Ampère going through it, this is just fine for measuring with a multimeter, but what if I want to view the current waveform with my oscilloscope?
I know the i200s would be a better option, as it already has a BNC connector and outputs a voltage in relation to the current passing through it, but I'd like to stick with what I already have, for obvious cost reasons :)

I was thinking about just putting a 1k ohm resistor across the terminals; this would then, parallel with the 1M ohm scope impedance create a 1000 ohm resistance.
This would then give one volt per amp, I think...
Thanks in advance for any insights in what should be a simple problem :p
« Last Edit: October 08, 2020, 12:52:16 pm by Nivr »
 

Offline PartialDischarge

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Re: Fluke i200 Amp clamp with oscilloscope?
« Reply #1 on: October 08, 2020, 01:01:34 pm »
No, you can't load the probe with 1k, as the current source does not have that voltage compliance. Use a 1Ohm/2Ohm resistor and connect that to the oscilloscope.

If this probe is for power electronics, other than 50Hz work, get a proper AC rogowski probe.
 
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Offline NivrTopic starter

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Re: Fluke i200 Amp clamp with oscilloscope?
« Reply #2 on: October 09, 2020, 09:00:35 am »
Thanks, I'll try a 10 ohm.
 


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