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Depth Measurement: Metallic Services (DXL4 and MXL4 Locators only)
The DXL4 and MXL4 Locators can be used in conjunction with the Signal Generator/
Transmitter, Sonde, Plastic Pipe Tracer or Flexible Tracer to indicate the depth of
a buried service.
Depth cannot be measured on the Power, Radio or All Scan Modes.
For the MXL4 Locator, depth measurements can be taken from a 512Hz, 640Hz, 8kHz,
33kHz, CF or HF (131kHz) signal.
1. The Signal Generator/Transmitter must be set to ‘Continuous’ signal output,
not ‘Pulsed’ output.
2. It is vital that the signal being measured is a good quality signal. This is best
achieved by using the Signal Generator/Transmitter in Connected Mode rather
than Induced Mode.
3. Set the Locator to Generator/Transmitter Mode and pinpoint the position of the buried
service. Make sure the Locator is directly over, and at right angles to the route of,
the buried service. Rest the Locator on the ground with the body vertical.
WARNING The depth indication MUST NOT be used to decide if mechanical
digging over the buried service is appropriate.
WARNING If the following procedure for Depth Measurement is not followed
then an inaccurate depth may be indicated. This is worse than having no depth
information at all.
NOTE A poor quality signal is indicated by an unstable visual response on the Locator.
Depth Measurement may be inaccurate in these circumstances.
WARNING If the pinpointing of the service is inaccurate then the Depth Measurement will be inaccurate.
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