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Title: Remote Monitoring Of Cathodic Protection Rectifiers
Author: Michael P. Nolan
Source: American Gas Association 1992
Year Published: 1992
Abstract: Our effort to remotely monitor Con Edisons cathodic protection rectifiers began in 1988 when we experimented with the use of the first remote monitor manufactured specifically for this purpose. Although other more costly and sophisticated remote monitoring systems existed at that time, they were not intended for this use. One such system, in fact, was in use on our own system since 1987. It was used to monitor the operation of a stray current drain bond between pipe type feeders and the New York City Transit Authority. We used 22 of its 26 channels to simultaneously monitor current and potentials at various points. Its cost was about 3000, in addition to the 20,000 for its installation. The capabilities of this system greatly exceeded our requirements for monitoring the current and voltage output of a rectifier. After the 1988 installation, comparable units became available. These units provided enhanced software and additional channels for monitoring. In addition, their reduced cost was a critical factor in our decision to continue pursuing remote monitoring.

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