000			02092nmc a2200313 4500
005			20260608201323.0
008			260224s2001 xxu ing
041			_aInglés
245	0	0	_aLiquid levels and density _bCase histories with DP cell problems
260			_aTexas _bThe Distillation Group _c2001
270			_a2009-05-18 ; 12/01/2004
500			_aPublicado en el sitio web de The Distillation Group(http://www.distillationgroup.com), donde pueden consultarse otros artículos sobre temas relacionados. ; Página visitada en enero de 2004. ; Navegadores de Internet
520			_aTranscripción del resumen presentado por el autor, en inglés Differential pressure (DP) cells are the most often used level measuring device in the process industries. Differential pressure cells measure the pressure difference between two points and send a differential pressure reading to the plant control system. Typically, DP cells are rated in inches of water equivalent. Standard ranges include 0 to 20, 0 to 50, 0 to 100, 0 to 200, and 0 to 500 inches of water differential pressure. The control system converts the DP cell reading into a liquid level based on an assumed specific gravity inside the vessel. Levels based on DP cells can err for different reasons. Previous columns have covered many reasons DP cells or sight glasses can give false readings. This column covers some case histories of specific DP cell problems
942			_cARCHIVO
110	2		_aThe Distillation Group _926172
650		0	_aTratamiento de gas natural _9382
650		0	_aTratamiento de gases licuados _9381
650		0	_aFraccionamiento _97267
650		0	_aTorres de enfriamiento _96894
650		0	_aTorres fraccionadoras _999
650		0	_aProcesos criogénicos _93008
650		0	_aDeetanización _91262
650		0	_aRecuperación de gases licuados _96399
650		0	_aDiagrama de flujos _923701
650		0	_aCondiciones operativas _925313
710	2		_aThe Distillation Group _926172
999			_c153589 _d153589
856			_uhttp://www.distillationgroup.com/technical/p095.htm