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From: Geir Holmavatn on 20 May 2010 05:33
Hi,

I'm looking for non-contact current sensors for 0-60/70A AC connected to
some digital interface (1-wire, GPIB, RS422, ethernet etc). The
measured cable should run through a hole in the sensor and not be
galvanically connected.

I need to monitor and register AC current with a computer from different
appliances...

Thanks for comments and tips on where I can find such sensors..

regards Geir
From: Jamie on 20 May 2010 20:10
Geir Holmavatn wrote:

> Hi,
>
> I'm looking for non-contact current sensors for 0-60/70A AC connected to
> some digital interface (1-wire, GPIB, RS422, ethernet etc). The
> measured cable should run through a hole in the sensor and not be
> galvanically connected.
>
> I need to monitor and register AC current with a computer from different
> appliances...
>
> Thanks for comments and tips on where I can find such sensors..
>
> regards Geir
You need a CT "Current Transformer"

They also have HALL devices with integrated components to give you a
0..10V output for current..

http://en.wikipedia.org/wiki/Current_transformer

http://www.automationdirect.com/adc/Overview/Catalog/Sensors_-z-_Encoders/Current_Sensing_Transducers;jsessionid=5e30ad5752e59775d4677273345a564d5c68?source=google&keyword=current%20transformer&type=search&gclid=CLP8nuD24aECFRY75QodSWZnJw

http://www.bergoz.com/products/CT/CT.html

http://www.littelfuse.com/protection-relays/introduction/ct-selection-guide.html

THat should give you started.

From: hamilton on 20 May 2010 21:36
On 5/20/2010 6:10 PM, Jamie wrote:
> Geir Holmavatn wrote:
>
>> Hi,
>>
>> I'm looking for non-contact current sensors for 0-60/70A AC connected
>> to some digital interface (1-wire, GPIB, RS422, ethernet etc). The
>> measured cable should run through a hole in the sensor and not be
>> galvanically connected.
>>
>> I need to monitor and register AC current with a computer from
>> different appliances...
>>
>> Thanks for comments and tips on where I can find such sensors..
>>
>> regards Geir
> You need a CT "Current Transformer"
>
> They also have HALL devices with integrated components to give you a
> 0..10V output for current..
>
> http://en.wikipedia.org/wiki/Current_transformer
>
> http://www.automationdirect.com/adc/Overview/Catalog/Sensors_-z-_Encoders/Current_Sensing_Transducers;jsessionid=5e30ad5752e59775d4677273345a564d5c68?source=google&keyword=current%20transformer&type=search&gclid=CLP8nuD24aECFRY75QodSWZnJw
>
>
> http://www.bergoz.com/products/CT/CT.html
>
> http://www.littelfuse.com/protection-relays/introduction/ct-selection-guide.html
>
>
> THat should give you started.
>

http://www.lemusa.com/hq/en/content/view/323/126/

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