Krohne Ag

Jan Teunis Aart Pors

Cornelis Johannes Hogendoorn

Marcel Meijlom Molenaar

Jan-Willem Ramondt

Arie Huijzer

Marco Leendert Zoeteweij

Olaf Jean Paul Bousché

Ariël De Graaf

Jeroen Van Den Berg

Cornelius Johannes Hogendoorn

Johannes Antonius Spithoven

Henry Van Der Linden

Marcel Meijlom Molennar

Marcerl Meijlom Molennar

An ultrasonic flowmeter having a measuring tube, a control unit, at least one first ultrasonic measuring unit and a second ultrasonic measuring unit, the measuring tube having a measuring tube interior and a measuring tube longitudinal axis, wherein each of the ultrasonic measuring units is arranged on the measuring tube, wherein each ultrasonic measuring unit has a first ultrasonic transducer and a second ultrasonic transducer, the first and the second ultrasonic transducers spanning a sound measuring section with a sound axis. The sound measuring section and the sound axis penetrate the measuring tube interior for carrying out ultrasonic measurements. To provide an ultrasonic flowmeter for reliable measurement of a multi-phase medium, the sound axis of the first ultrasonic measuring unit and the sound axis of the second ultrasonic measuring unit span a sound measuring plane which extends substantially parallel to the longitudinal axis of the measuring tube.

Ultrasonic flowmeter, method for operating an ultrasonic flowmeter, measuring system and method for operating a measuring system

A homogenization device for homogenization of a magnetic field with an non-magnetic carrier and compensation elements formed of a magnetic material, the carrier having a carrier wall and the carrier wall surrounding a carrier interior, in the homogenization device located in the magnetic field the magnetic field penetrating into the carrier interior through a first carrier region of the carrier wall and emerging from the carrier interior through a second carrier region of the carrier wall and each of the compensation elements which are located on the carrier contributing to the homogenization of the magnetic field at least in the carrier interior. In the homogenization device, handling during homogenization is improved in that there are recesses in the carrier wall and in each of the recesses at least one of the compensation elements can be directly inserted and removed.

Homogenization device for homogenization of a magnetic field

A nuclear magnetic flowmeter is disclosed. The nuclear magnetic flowmeter includes a magnetization device located around a straight measuring tube for producing a magnetic field in a medium. The flowmeter also includes a gradient coil that produces a gradient in the field. The flowmeter further includes a signal coil that excites the medium and that detects the result of the excitation. Additionally, the flowmeter includes a coil insulating frame and a sealed housing. The housing is along a longitudinal axis of the tube and has a first face side and a second face side having openings through which the tube is routed. The magnetization device is provided in the interior of the housing. The gradient coil and the signal coil are located in a space between the tube and magnetization device that is penetrated by the field. The gradient coil and/or the signal coil are located on the frame.

Nuclear magnetic flowmeter

A magnetization device with a magnetic field which is generated by permanent magnets for variable magnetization of a medium flowing through a tube over a magnetization distance along the longitudinal axis of the tube. The magnetization device improves the quality of the results relative to known nuclear magnetic resonance measurement and analysis methods in that the magnetic field in the medium has a single direction over the magnetization distance.

A magnetization device for permeation of a multiphase fluid flowing through a measurement tube of a nuclear magnetic flow meter with a magnetic field which is homogenous at least in one plane, with a plurality of permanent magnets for generation of a magnetic field and with a carrier, the carrier having at least one magnet receiver, each magnet receiver accommodating at least one of the permanent magnets, the shape of the magnet receivers and of the permanent magnets allowing movement of the permanent magnets in the magnet receivers only in one direction and the permanent magnets being by the magnet receivers formed by hollow profiles. The hollow profile magnet receivers can be receiving tubes for the magnets that can be turned around their longitudinal axis or the profiles can have a rotatable adapter for the magnets so that a first shimming action can be achieved with the profiles.

Magnetization device for a nuclear magnetic flow meter

A magnet module for a nuclear magnetic flow meter including at least one permanent magnet and a jacket. The jacket protects the at least one permanent magnet against peeling of magnet material by mechanical loads when the magnet module is introduced into a magnet receiver of the flow meter, simplifies introduction of the permanent magnets into the magnet receivers by reduced friction between the magnet module and the magnet receivers, and influences the magnetic field which generated by the permanent magnets.

Magnet module for a nuclear magnetic flow meter

An ultrasonic flow rate measuring device for measuring the flow rate through a line through which a medium flows has at least one ultrasonic transducer that has a piezo element and a connecting element designed for attaching the ultrasonic transducer to the line with the piezo element attached to the connecting element. An intermediate layer including a plate is disposed between the piezo element and the connecting element that is electrically conductive and attachable to an electromagnetic shield. Thus, an ultrasonic flow rate measuring device that delivers a greater signal-to-noise ratio is achieved.

Ultrasonic flow rate measuring device

A process and device for mounting a clamp-on flow rate measurement device on a measurement pipe using a mounting device having a holding strap with catches. The holding strap can be fastened on the measurement pipe by the holding strap being guided into and through the catch and tightened. A holder is attached to the holding strap to which the clamp-on flow rate measurement device can be fastened. First the mounting device is mounted on the measurement pipe, afterwards the clamp-on flow rate measurement device is attached to the holder without the holding strap being completely tensioned, so that the clamp-on flow rate measurement device is loosely held on the measurement pipe. Then, after aligning the clamp-on flow rate measurement device is, the clamp-on flow rate measurement device is completely attached to the holding means by further tensioning of the holding strap by lifting the catch off the measurement pipe.

Process for mounting a clamp-on flow rate measurement device and mounting device for attaching a clamp-on flow rate measurement device

A clamp-on measurement device, for attachment to a support, with at least one instrument transformer, a retaining device for holding the instrument transformer and a fastening device () for attachment of the retaining means to the support. The retaining device can be attached to the fastening device () such that the retaining device can be moved in at least one predetermined direction away from or toward the support and can be pivoted along a pivot axis which runs preferably perpendicular to the predetermined direction. This results in the clamp-on measurement device, after attachment to a support, being easily disengaged from the support for maintenance and repair purposes and then can be reengaged with the support without losing its original alignment.

Clamp-on measuring device

An ultrasonic flow rate measuring device, especially a clamp-on ultrasonic flow rate measuring device, with at least one ultrasonic transducer () for measuring the flow rate through a line through which a medium flows. The ultrasonic transducer () is located within an electromagnetic shielding arrangement (). Thus, an ultrasonic flow rate measuring device which delivers a good signal-to-noise ratio is achieved.

Growing community of inventors

Oud-Beijerland, Netherlands

Jan Teunis Aart Pors