Three-Element Control and Boiler Selection - CR4 Discussion Thread

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thulasibala Member Join Date: Feb 2009 Posts: 9	Three-Element Control and Boiler Selection 02/25/2009 2:15 AM
	hi friends, could u pls explain what is meant by three element control and how it is used in boiler section pls send me the ans regards bala
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Anonymous Poster	#1 Re: can u pls explain the two and single element control 02/25/2009 2:41 AM
	http://www.instrumentationguide.com/article/boilerlevelcontrol.htm
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josej Power-User Join Date: Mar 2008 Location: Mumbai Posts: 250 Good Answers: 2	#2 Re: can u pls explain the two and single element control 02/25/2009 4:18 AM
	For a 03 element control ,Steam flow & Drum level are summed together which acts as the SP for feedwater flow contrl valve while the process variable is taken from the Flow transmitter proir to FCV. Regards Jose John
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