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Section 7 – Using Accessories
7.1 About accessories
Both the transmitter and locator are compatible with
a wide range of accessories, including the relevant
RD7000/RD8000/RD4000 accessories. Use clamps to
help apply a signal to pipeline or live wire. Use an A-
Frame to provide the RD7000+ locator with advanced
fault-finding capabilities.
When an accessory is connected, the locator or
transmitter will instantly recognize it and will enable
the mode appropriate to the accessory. For example,
attaching an A-Frame to the RD7000+ locator will
automatically switch the locator to fault-find mode and
limit the number of available frequencies to those that are
compatible with the A-Frame. The LCD will also display
an icon of the accessory and will remove non-essential
icons from the screen.
For a full list of supported accessories, please refer to
Appendix 10.3.
7.2 Locator clamps
A locator clamp is used to positively locate and identify a
cable when several cables are running close together.
A target cable can be identified in a chamber, on a tray or
other access point by fitting a clamp to the locator and
examining each cable in turn. Signal strength response
shown on the locator display should be noted for each
cable.
7.2.1 When to use clamps
Clamps can be used where:
•
Several cables or pipes run in close proximity to
each other.
•
A cable or pipe is accessible at an inspection hole
or manhole.
7.2.2 Connecting a clamp
1.
Put the clamp connector into the accessory socket
on the front of the RD7000+ locator.
2.
Place the clamp around the pipe or cable and switch
the locator on.
3.
Set the frequency to the same as that on the
transmitter.
4.
Put the clamp around each cable in turn and note
the bar graph response. Compare the strength
of response from each cable. The cable with a
substantially stronger response than the others will
be the cable to which the transmitter signal has
been applied.
Figure 7.1: Connecting a locator clamp
To ensure that the target cable has been correctly
identified, reverse the positions of the transmitter and
locator and check that the strongest response is still
received from the target cable by the locator in its new
position.
RD7000+ Operation Manual 23
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