Sentec Corporation

Davey Water Products Pty Ltd

Robert Davidson

Andrew Nicholas Dames

Edward Colby

Mark Andrew Lance

Mathew Price

An electricity meter comprises a conductor having a substantially planar surface; and a carrier for carrying a sensor component for enabling detection of current flowing in the conductor, wherein the carrier is spaced from the planar surface of the conductor by an arrangement of at least three spacing elements. The spacing elements may project from the carrier or from the substantially planar surface of the conductor.

Electricity meter and an insulating carrier for a sensor component of an electricity meter

A flexible current sensor arrangement comprises a plurality of discrete current sensing elements distributed along an elongate flexible carrier. An elongate flexible member for a current sensor arrangement comprises a plurality of carrying portions linked to one another by hinge portions, each carrying portion being configured for receiving a discrete current sensing element. A method of manufacturing a flexible current sensor arrangement comprises providing an elongate flexible carrier, and distributing a plurality of discrete sensing elements along the elongate flexible carrier.

Flexible current sensor arrangement

A salt water chlorinator () for a swimming pool includes an electrolysis cell having two anodes () and a cathode (). Two scrapers (), each of which is of titanium and includes scraping portions in the form of ribs () in contact with the opposite surfaces of the cathode, are reciprocated relative to the cathode () to remove scale deposits from the cathode (). The scrapers () are mounted in a frame () and their scraping ribs () are curved such that the ribs () are self-biased against the cathode surfaces. A mechanism for reciprocating the scrapers () includes two solenoid coils () which act on cores () in a stem () of the frame (). A control circuit for the electrolysis cell is contained in a housing () which is attached to a housing () for the electrolysis cell. The control circuit includes a flow sensor for sensing salt-water flow through the electrolysis cell.

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Cambridge, United Kingdom

Robert Davidson