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Participant

Join Date: Aug 2008
Posts: 2

Calibration of GE panametric Flow transmitter

08/28/2008 10:56 PM

Dear all,

I would like to thank all of you for your participation in this web site.We had installed so many GE panametric flow Tx in our gas plant and we are guetting wrong reading and also it is not communicating with HART communicator.

I don't understand what is two wire conncetion and 04 wire conncetion to communicate with hart communicator?

Thanks for you answer.

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Guru

Join Date: Aug 2007
Location: Earth - I think.
Posts: 2143
Good Answers: 165
#1

Re: Calibration of GE panametric Flow transmitter

08/28/2008 11:23 PM

One good place to start is: http://en.wikipedia.org/wiki/HART_Protocol

What you have to understand is the difference between 2wire and 4wire transmitters. The biggest thing is where the power supply for the loop is located.

With a 2wire system the power supply is at the DCS/PLC (usually 24VDC in my experience), that supplies the instrument which controls the current going back to that system.

With a 4wire system the power supply is at the instrument.

If you read the literature on the instrument, it will tell you whether it is a 2wire or 4wire device. Then read the manual on the HART communicator.

Hope this helps.

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Active Contributor

Join Date: Aug 2008
Posts: 11
#2

Re: Calibration of GE panametric Flow transmitter

08/29/2008 3:03 AM

Pls mention line size, flow rate, type of sensor for the flow tx. and what type of measuring principle u r having in ur plant.

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