Patent ID: 9678119
Date: 2017-06-13
CPC Classifications: F21L,F21V,F21W,F21Y,G01R,G08B

Claim:
1. The method of determining if a body of water contains an electrical current that can injure or kill a person who enters the body of water comprising: placing a portable shock detector in the body of water to measure a voltage at various locations in the body of water; bringing a pair of water electrodes on the shock detector into contact with the body of water; measuring a voltage gradient between the pair of water electrodes while the shock detector is in the body of water; determining if the voltage gradient between the pair of water electrodes on the shock detectors exceeds a threshold level sufficient to injure or kill a person; and activating an alarm to alert a person that the voltage gradient exceeded the dangerous threshold that can injure or kill a person who enters the water.