Measuring device, e.g. for remote operating system, has reference electrode in proximate area of protection object, and switching device to break and close connection between electrode and measuring instrument in controllable manner

摘要

Measuring device has a reference electrode (3) in a proximate area of a protection object (1). The protection object and the reference electrode are connected with an input of a measuring instrument (5) of a remote operating system by an electrical connection. A switching device (7) breaks and closes the connection between the reference electrode and the measuring instrument in a controllable manner.