SYSTEM AND METHOD FOR MEASURING ELECTRIC CURRENT IN A PIPELINE

摘要

A system for measuring a voltage differential in a current-carrying pipe (102)using a propulsion vehicle (108) for conveying the system inside the pipe (102), the system comprising a first contact (116) for maintaining electrical contact with the pipe (102) as the vehicle (108) moves through the pipe (102), a second contact (118) positioned in a spaced apart relationship from said first contact (116) for maintaining electrical contact with the pipe (102) as the vehicle (108) moves through the pipe (102), and a voltage reading device (212) connected to said first contact (116) and said second contact (116) for measuring the voltage between said first contact (116) and said second contact (118) as the vehicle moves through the pipe.