Coriolis Mass Flow Controller

(19)

(11)

EP 2 088 403 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	31.01.2018 Bulletin 2018/05

(43)	Date of publication A2:
	12.08.2009 Bulletin 2009/33

(21)	Application number: 08170304.3

(22)	Date of filing: 07.12.1999

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International Patent Classification (IPC):

G01F 1/84^(2006.01)

G05D 7/06^(2006.01)

(84)	Designated Contracting States:
	CH DE FR GB IT LI NL

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Priority:

08.12.1998 US 111504 P
07.06.1999 US 326949
01.11.1999 US 430881

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	99968086.1 / 1137914

(71)	Applicant: Emerson Electric Co.
	St. Louis, MO 63136 (US)

(72)	Inventors:
	Barger, Michael, J. Souderton, PA 18964 (US) Dille, Joseph, C. Telford, PA 18969 (US) Whiteley, Jeffrey, L. Perkasie, PA 18944 (US) Scott, Timothy, W. Lansdale, PA 19446 (US)

(74)	Representative: Ellis, Christopher Paul et al
	Ollila Law Limited Warwick Innovation Centre Warwick Technology Park Gallows Hill Warwick CV34 6UW Warwick CV34 6UW (GB)

(54)	Coriolis Mass Flow Controller

(57) A device for determining mass flow from a Coriolis force-induced phase shift between first and second input signals detected by first and second displacement gauges comprises first, second, third and fourth phase sensitive detectors, a first phase shifter, a processor and first and second differential amplifiers.

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