1
Wolfgang Drahm: Coriolis-type mass flow sensor with flow condition compensating. Endress Hauser Flowtec, Barnes & Thornburg, July 2, 1996: US05531126 (43 worldwide citation)

This mass flow sensor is to be fitted with two straight tubes, but conventionally needed manifolds are to be dispensed with. The sensor can be installed, by flanges, in a conduit of a given diameter so as to be axially aligned with the conduit, through which flows a fluid to be measured. It has a st ...


2
Wolfgang Drahm, Georg Szaloky, Alfred Wenger, Ennio Bitto, Ole Koudal, Christian Matt, Christian Schutze: Coriolis mass flow/density sensor with a single straight measuring tube. Endress Hauser Flowtec, Bose McKinney & Evans, December 28, 1999: US06006609 (39 worldwide citation)

This mass flow/density sensor (10), which can be installed in a pipe and through which a fluid to be measured flows during operation, is to be balanced over a wide density range, so that accurate measurements are possible. A single straight measuring tube (13) having a longitudinal axis (131) extend ...


3
Wolfgang Drahm, Alfred Rieder: Process meter. Endress Hauser Flowtec, Bacon & Thomas, May 9, 2006: US07040179 (25 worldwide citation)

A process meter for measuring at least one physical process variable of a medium stored in a container or flowing in a line, comprising: a transducer including a sensor arrangement providing measurement signals (s1, s2), said sensor arrangement having: at least a first sensor providing at least a fi ...


4
Alfred Wenger, Michael Fuchs, Christian Matt, Wolfgang Drahm: Vibration meter and method of measuring a viscosity of a fluid. Endress &plus Hauser Flowtec, Bose McKinney & Evans, November 25, 2003: US06651513 (21 worldwide citation)

A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement ...


5
Wolfgang Drahm, Alfred Rieder, Ennio Bitto, Rainer Lorenz, Christian Schütze, Alfred Wenger, Michael Fuchs, Martin Anklin: Endress &plus Hauser Flowtec, Jones Tullar & Cooper P C, December 23, 2003: US06666098 (21 worldwide citation)

A vibratory transducer comprises a flow tube for conducting the fluid flowing in a pipe. The flow tube communicates with the pipe via an inlet-side tube section and an outlet-side tube section. An antivibrator is mechanically connected with the flow tube by an inlet-side coupler and an outlet-side c ...


6
Wolfgang Drahm, Alfred Rieder, Christian Matt: Excitation circuits for coriolis mass flowmeters. Endress &plus Hauser Flowtec, Jones Tullar & Cooper P C, December 9, 2003: US06662120 (14 worldwide citation)

Such an excitation circuit is intended for use in a Coriolis mass flowmeter which is connected to, is powered exclusively from, and outputs a measurement signal exclusively via, a two-wire process control loop. The Coriolis mass flowmeter has a vibrating flow tube and an excitation assembly for vibr ...


7
Alfred Rieder, Wolfgang Drahm: Endress &plus Hauser Flowtec, Jones Tullar & Cooper P C, February 17, 2004: US06691583 (14 worldwide citation)

To conduct a fluid, the transducer has a flow tube which in use is vibrated by an excitation system and whose inlet-side and outlet-side vibrations are detected by means of a sensor system. In response to transverse forces produced in the vibrating flow tube, the latter is, at least temporarily, lat ...


8
Alfred Rieder, Wolfgang Drahm, Michael Fuchs, Hans Jörg Sprich, Ibho Itin, Samuel Wyss: Coriolis mass measuring device. Endress Hauser Flowtec, Bacon & Thomas PLLC, April 15, 2008: US07357039 (12 worldwide citation)

A Coriolis mass flow measuring device includes a vibratory measuring transducer having at least one measuring tube, which has medium flowing through it during operation. In operation, the measuring tube is caused by an exciter arrangement to undergo mechanical oscillations, especially bending oscill ...


9
Wolfgang Drahm, Alfred Rieder: Endress Hauser Flowtec, Bacon & Thomas PLLC, January 11, 2005: US06840109 (12 worldwide citation)

To conduct a fluid, the transducer has a flow tube which in operation vibrated by an excitation assembly. Inlet-side and outlet-side vibrations of the flow tube are sensed by means of a sensor arrangement. To produce shear forces in the fluid, the flow tube is at least intermittently excited into to ...


10
Alfred Rieder, Wolfgang Drahm: Method for measuring a medium flowing in a pipeline and measurement system therefor. Endress Hauser Flowtec, Bacon & Thomas PLLC, August 5, 2008: US07406878 (12 worldwide citation)

For measuring a medium, the medium flows through at least one inline measuring device measuring tube joined into the course of a pipeline, especially a measuring tube which vibrates, at least at times. Using an inline measuring device sensor arrangement arranged on the measuring tube and/or in its v ...