Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Reexamination Certificate
2002-06-19
2009-12-22
Fitzgerald, John (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
Reexamination Certificate
active
07634939
ABSTRACT:
The viscometer comprises a vibratory transducer with at least one flow tube for conducting a fluid to be measured and for producing friction forces acting in the fluid. To vibrate the at least one flow tube, an excitation assembly is provided, which in operation is traversed by an excitation current. To generate the excitation current and a viscosity value representing the viscosity of the fluid, the viscometer includes meter electronics which are connected to, and supplied with electric power from, a two-wire process control loop. The meter electronics feed a viscosity signal corresponding to the measured viscosity value into the two-wire process control loop. The viscometer is suitable for measuring a fluid flowing in a pipe, particularly in potentially explosive atmospheres.
REFERENCES:
patent: 4420753 (1983-12-01), Meyer-Ebrecht
patent: 4524610 (1985-06-01), Fitzgerald et al.
patent: 4911006 (1990-03-01), Hargarten et al.
patent: 5869770 (1999-02-01), Yoshimura et al.
patent: 5907292 (1999-05-01), Ahr
patent: 6006609 (1999-12-01), Drahm et al.
patent: 6311136 (2001-10-01), Henry
patent: 6472884 (2002-10-01), Brockhaus
patent: 2001/0039829 (2001-11-01), Wenger
patent: 2004/0149650 (2004-08-01), Hiatt
patent: 27 01 184 (1978-07-01), None
patent: 2701184 (1978-07-01), None
patent: 1 079 213 (2001-02-01), None
patent: 1 094 307 (2001-04-01), None
patent: 1094307 (2001-04-01), None
patent: 1 154 254 (2001-11-01), None
patent: 1154254 (2001-11-01), None
patent: WO 88/02476 (1988-04-01), None
patent: WO 97/12347 (1997-04-01), None
patent: WO 01/29519 (2001-04-01), None
Drahm Wolfgang
Matt Christian
Rieder Alfred
Bacon & Thomas PLLC
Endress & Hauser Flowtec AG
Fitzgerald John
LandOfFree
Viscometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Viscometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4128308