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Author Topic: How clamp meter can measure AC power factor ?  (Read 4851 times)
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iphone
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« on: December 05, 2009, 04:20:29 16:20 »

Hi all,

Anyone know the principal of clamp meter which can measure power factor ? As I know, clamp meter only measure the current in the conductor (AC supply) using its clamp, so my question how it can measure power factor of AC supply ?

here some sample of the clamp meter.

http://www.omega.com/ppt/pptsc.asp?ref=HHM98P

So anyone can help me on explaning the principal as I need to build some equipment to able calculate/measure power factor.

 Smiley
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mris99
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« Reply #1 on: December 05, 2009, 05:26:21 17:26 »

Hi,

There is no magic here.
Download the manual, and check the circuit diagrams of power measurement:
http://www.omega.com/Manuals/manualpdf/M4311.pdf
Page 12 - Figure 3.
You have to connect not only the clamp, but the voltage measure wires too.
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