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Elektric
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Join Date: Sep 2008
Posts: 10

Inputs for Digital Power Meters

09/18/2008 5:54 AM

Are there digital power meter that receives a 4-20mA signal or pulse as input instead of 5A/120VAC from CT and PT?

Thank you.

Elektric
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cnpower
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Engineering Fields - Control Engineering - New Member China - Member - New Member

Join Date: Sep 2006
Location: CHINA
Posts: 2945
Good Answers: 14
#1

Re: Digital input Power meter? Need your Idea..

09/18/2008 6:20 AM

what？

have you ever thought where 4-20ma signal comes from?
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Elektric
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Posts: 10
#2
In reply to #1

Re: Digital input Power meter? Need your Idea..

09/18/2008 6:35 AM

Thanks for the attention. Yes, the 4-20mA comes from the transducer and the transducer now is getting its signal from CT and PT.

Hope the above clarifies the issue.
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Anonymous Poster
#3
In reply to #2

Re: Digital input Power meter? Need your Idea..

09/18/2008 8:51 AM

Yes some power meters can to work with 4-20 mA, and some energy meters can to work with pulse.

Please clarify your means.

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cnpower
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Engineering Fields - Control Engineering - New Member China - Member - New Member

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Posts: 2945
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#4
In reply to #2

Re: Digital input Power meter? Need your Idea..

09/18/2008 10:25 PM

no problem, you can buy them on the market. they have standard inferface.

you can even buy wireless meter.
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pwr2thepeople
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Join Date: Aug 2007
Location: Indiana, USA
Posts: 579
Good Answers: 61
#5

Re: Inputs for Digital Power Meters

09/19/2008 2:48 PM

They are available from many manufacturers, including Yokogawa, Electro Industries, Crompton, among others.

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Elektric
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Join Date: Sep 2008
Posts: 10
#6
In reply to #5

Re: Inputs for Digital Power Meters

09/19/2008 7:25 PM

Hi pwr2thepeople,

Thank you for sharing your expertise. I just got what I need. I think Yokogawa can meet our requirement.

Regards,

Elektric
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