Patent ID: 7641387

Claim:
A temperature and sag monitor system for use on a span of a power conductor, the span being of a section of the power conductor suspended between a pair of transmission towers, the monitor system for monitoring the average temperature and the sag of the span during power transmission, the temperature and sag monitor system comprising: a temperature sensor and inclinometer positionable on the span, the temperature sensor outputting signals indicating a temperature measurement of the span, and the inclinometer outputting signals indicating an angle of inclination of the span; transmitters electrically connected to the temperature sensor and the inclinometer for reading the output of the temperature sensor and the inclinometer, and transmitting signals indicative of the sensor outputs; and a processor including a receiver for receiving signals from the transmitters indicative of the output of the temperature sensor and the inclinometer, and calculating the average temperature and/or sag of the span based upon computing a real time covariance of the received signals.