Patent ID: 7901546

Claim:
A device for monitoring a cathodic protection system having a DC power source electrically connected to a buried structure, and a current interrupter having a first state and a second state for cyclically interrupting power provided to said structure at outputs of said DC power source, said device comprising: a. a current input, a voltage input and a common input each electrically connected to said outputs of said DC power source; b. an analog-to-digital converter electrically connected to at least one of said inputs and having at least one output; c. a microprocessor electrically connected to said at least one output of said analog-to-digital converter, said microprocessor having programming adapted to asynchronously determine the state of said current interrupter; and d. a communication port for outputting data from said microprocessor, said data representative of one of the group consisting of an average voltage of said DC power source when said current interrupter has said first state, an average voltage of said DC power source when said current interrupter has said second state, an average current of said DC power source when said current interrupter has said first state, an average current of said DC power source when said current interrupter has said second state, and combinations thereof.