Cathodic protection test station

摘要

A cathodic protection test station device has a terminal board integrally formed with a base plate. A removable housing locks onto the base plate and covers the terminal board and the base plate. A tab formed in the base plate extends into a recess formed in the housing defining a locking position. A tool may be inserted in an access slot formed in the housing to deflect the tab and remove the housing. A plurality of first wedge members are symmetrically disposed on a bottom surface of the base plate. The first wedge members have an inclined surface that slidably engages an inclined surface of a plurality of second wedge members. A bolt extends through the base plate and the first and second wedge members to a nut held in a non-rotating manner in the second wedge member. As the bolt rotates, the nut moves towards a head of the bolt and urges the first and second wedge members axially together. Because the wedge members engage each other with surfaces inclided with respect to an axis of the bolt, the second wedge member is displaced laterally or radially. As the second wedge member is displaced, a frictional contact surface formed on a perimeter of the second wedge member is forced against an inner surface of the tube for securing the test station to the tube.