Radiodetections RD-8000
EMC deploys Radiodetection RD-8000, which is the latest in technology when it comes to line locating devices.
The RD-8000 locating system is a newly designed utility pipe, cable, and line locating system. This unit featuring 18 frequencies, circuit breakers, left-right arrows, peak & null mode, compass, true depth as well as a complete digital platform that works in two methods.
Active Methods
An active signal is a signal that has been artificially generated by an external source. Active radiodetection methods can allow different services such as telephone and electric to be individually identified. Active methods involve the use of a transmitter. The transmitter can either be used for direct connection or for induction. Direct connection involves the application of an active signal to a conductor using a clip or clamp. Induction involves a signal being radiated from the internal antenna of the transmitter which is induced to any conductors in the vicinity and re-radiated. Generally 8, 33, 65 or 83KHz frequencies are used but many more are available. It is often possible to determine the depth of the service in these modes.
Passive Methods
A passive signal is a signal that occurs ‘naturally’ on a buried conductor. Passive radio detection methods will provide an indication only that services are present underground. Passive methods use the electro-magnetic fields already present around the underground utility to locate them. Two modes are generally used:
- Power – detects 50-60Hz energy present on most buried conductors
- Radio – detects re-radiated radio energy often present on conductors (it is not possible to determine depth in this mode).
