Other

Cookson Group Plc

Focas Limited

James D Hobby

Steven J Butcher

Danny F Holman

Riad Mouhamed Adel Kocache

David H Kings

A gas measurement cell has a measurement element suspended to oscillate about a suspension axis in a magnetic field. A coil which oscillates with the element may have electrical signals applied to it to initiate oscillation and also provides an output whereby the frequency of oscillation can be measured.

Sensor for measuring the magnetic characteristics of a gas

Composite multilayer ceramic structure

A sensor assembly 1 comprises an optical fibre 4 and a transducer 23 arranged to apply transverse strain to a localised portion 24 of the fibre. Birefringence effects induced by the fibre strain are remotely sensed to obtain a signal representative of the transducer input which in turn is connected to a current sensing coil 34 thereby enabling electric current in a conductor 32 to be remotely sensed. The localised portion 24 of the fibre 4 is stripped to remove an outer jacket and is embedded in a relatively rigid matrix material. Damage to the fibre and the effects of creep are thereby avoided. The resulting sensor is particularly suited to the measurement of high currents in power distribution systems.

Optical fiber sensor for producing a variable transverse strain in a

Growing community of inventors

Didcot, United Kingdom

James D Hobby