Where risers are present, the RD8000 utility locator transmitter can be connected to the object, and a current is impressed on the conductor pipe or cable. The receiver unit is tuned to this same frequency, and it is used to trace the pipe’s surface projection away from the riser. The transmitter and receiver can also be used in a non-connect (induction) mode, whereby the transmitter is positioned on the ground and an electromagnetic signal is emitted. In the presence of buried metal pipes and wires, a discrete signal will be induced on the conductor which can be sensed by the receiver. In addition, the instrument may be used in the passive mode, whereby radio and 60 Hz electromagnetic signals produced by communication and live electric lines are detected.
Where live electrical lines exist, ambient electro-magnetic waves are produced by the flowing electricity. This em wave, usually 50-60 Hz is readily traced with the receiver unit.
- Locate and map utility lines for safety in environmental and engineering drilling projects
- Locate and map utilities for safety in trenching and shoring
Typical gasoline service station markout