Westinghouse Electric Corporation

Robert D Couch

Bruce N Lenderking

Franklin T Emery

In a multiplexed and microprocessor-based data acquisition system involving temperature measurement with temperature resistor thermometer devices (RTD), automatic signal substitution for calibration is effected without physically interrupting the measurement signal path by taking three measurements between the three wires at the input and using with the microprocessor a cancellation algorithm.

Automatic temperature calibration method and apparatus

The level and duration of RF current flowing in the neutral grounding circuit of a generator is monitored to determine internal arcing conditions.

On-line RF arc monitor for large rotating generators

A system for monitoring vibration or mechanical motion of equipment utilizing an optical waveguide sensor coupled to the equipment. The optical waveguide sensor is formed into a coil or a sinuous path which exceeds the bend radius or critical angle for internally reflected light directed through the waveguide. Vibration or mechanical force imparted to the waveguide from the equipment being monitored further alters the bending losses in the waveguide, and this change in bending losses is used to generate a signal as a function of the vibration or mechanical force.

Growing community of inventors

New Freedom, PA, United States of America

Robert D Couch