Btg International Limited

Sensus Technologies Inc.

Scientific Generics Limited

James Mark Carson England

Andrew Nicholas Dames

Richard John Topliss

Ross Jones

Iain Ansell

Miles William Noel Hember

Nicholas John Collier

Graham Lodge

Ian Ansell

Andrew Nicholas Dam Es

Ross Peter Jones

A method of determining differing characteristics of magnetic dipole elements such as orientation, coercivity, bias and response amplitude and a tag reader for reading magnetic tags containing such elements. The elements are scanned by a rotating magnetic field and two sets of transition data are determined. The transition data sets are associated with respective elements and analyzed to determine mean field values resolved along the element vectors. These field values are used to determine properties of the elements, such as coercivity.

Determining properties of magnetic elements

A magnetic flow meter includes a cylindrical vessel within which electrodes are placed directly opposite each other about a magnetically permeable core. In that way, two flow channels are obtained in the vessel. A common magnetic field is applied across both flow channels. The magnetic flow meter is used in conjunction with a controller which monitors amplitude modulated signals representative of applied magnetic field and induced electric field. These amplitude modulated signals are passed to Sigma-Delta modulators, which directly digitise the amplitude modulated AC signals into digital pulses. The controller is capable of monitoring reverse flow through the meter, and to store results until forward flow resumes. Moreover, the controller generates a driving signal for coils which generates a magnetic field, the coil being placed in conjunction with a capacitor which causes resonance. This reduces power consumption by the coil in driving the meter.

Magnetic flow meter

Growing community of inventors

Cambridge, United Kingdom

James Mark Carson England