Abstract: A conductivity sensor for placement on a curved steam turbine component within the steam path. The sensor includes a metal foil base over which is deposited an electrically insulating layer such as glass. The base and insulating layers are of such thickness so as to be flexible so as to conform to the curved surface. An electrode array is deposited upon the insulating layer and spaced so as to accommodate for deposition of steam impurities onto the insulating layer. Flexible links connect the electrodes to electrical leads so that conductivity indications may be obtained.

Abstract: A turbine system which includes a reheater upstream from a low pressure turbine which is subject to corrosive salt depositions from the steam. Conductance probes are inserted at predetermined positions within the low pressure turbine and based on the conductance signals the reheat temperature or load is varied so as to move the corrosive salt deposition zone away from a rotating blade stage of the low pressure turbine.

Abstract: A conductivity cell wherein thin film or foil electrodes are supported in a case or holder and are separated by an electrically insulative spacer member. A small portion of each electrode together with an exposed surface of the spacer member forms a channel in which thin films of an electrolyte may be deposited from a measured environment and with the electrodes being connected to a conductivity circuit the conductance of the thin film may be measured. If the electrolyte and its concentration are known, the film thickness and deposition rate in the channel may be obtained.

Abstract: A high-current electrical machine, comprises a moving member and at least one current collector brush in interface contact with the moving member where the brush comprises a plurality of metal fibers plated with a metal-lubricant coating, the metal fiber and coating being annealed together, the coating being effective to provide a lubricating effect and minimize wear at the area of brush contact with the rotating member.