Push Cable And Line Locating; Passive Versus Active Locating; Grounding Post - Milwaukee M12 PL Notice Originale

7 PUSH CABLE AND LINE LOCATING

7.1 Passive versus active locating

Defi nition
Modes
Source
When to use
* Buried pipes and cables act as antennas that re-radiate the signal.
Radio signals travel further distances if both ends of the utility are grounded.
Always call before you dig and follow local, state, or national regulations and
your company's safety and work practices.

7.2 Grounding Post

The grounding post must be used while using the LINE TRACE feature to trace push cable. The CONTROL HUB
must be grounded to close the current loop to send out a good locate signal. Use the supplied grounding cable
assembly with ground stake to ground the CONTROL HUB to earth.
ENGLISH
Active
Active locating is generally used to trace and
pinpoint a specifi c buried line
Active locating always requires a sonde or
transmitter.
Sonde
Line trace 33kHz & 83kHz
PIPELINE INSPECTION REELS
WIRELESS MONITOR
PIPELINE INSPECTION APP
Sondes
Use to trace, identify & pinpoint a buried line.
When a depth measurement is required.
Passive
Used to mark the location of unidentifi ed
buried lines to avoid them.
Do not use to identify or trace specifi c lines.
Power: 50/60Hz
Radio: 15 kHz – 27 kHz
Power* - transmission & distribution networks
Radio* - high power, low frequency (LF)
communication transmitting towers.
Search for unknown buried lines when
applying a transmitter signal is not practical.
For small, localized digging (planting a
fencepost or road sign).
A last check before digging.
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