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Author Topic: CurrentCost CT clamp - 12mm  (Read 1838 times)
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I have one of these, http://www.amazon.co.uk/Current-Cost-Pincer-Style-Sensor/dp/B0041SBLN2 - and I need to know its specs to interface directly with my Arduino. I guess I need it's windings etc.

I googled about, and I can't seem to find the data sheet (if there is one).

Any help guys?
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maby use something else im planning on using this later but trying to figure out how to get an output from it

http://in.rsdelivers.com/product/lem/9037190000/lts-hall-effect-current-transducer-25a/3019473.aspx
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Hmm, I was kinda hoping to use what I have on hand. I got the sensor from a free giveaway by EON with an energy monitor, which still works, but doesn't excite my inquisitive mind smiley

I have the PCB of the original device. You could fit three of these clamp sensors into it, and here is a pic of the PCB: http://i.imgur.com/A2xYk.jpg

Cheers
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For a current transformer you need to know the number of turns, and this can be roughly measured (its likely to be a nice round number fortunately).

Measurement means you need a known source of AC current at mains frequency.  You also need to place a multimeter in AC current measuring mode across the output of the clamp sensor.  Don't try to measure its voltage, you must short-circuit the output with a current meter.  The ratio of current through the clamp jaws to the measured current from the sensor is the number of turns.  Expect a value of several hundred or thousand turns (ie 10A rms through the jaws you'd expect something in the range around 10mA at the output).

Or try asking at the current-cost blog...
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