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R
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URVEYING A SITE
6 SURVEYING A SITE
Your Elcometer 701 Pipe and Cable Locator is the ideal instrument to use if a site needs to be
searched for cables and pipes. Typically there may be inaccurate or no information available as to
the location and orientation of cables and pipes on a site planned for construction (e.g. excavation
work).
When such a site is to be searched, a systematic approach should be taken. The following picture
illustrates how to proceed:
Carry out a survey in Power Grid and Radio modes using a grid search pattern to cover the site
and locate conductors in all directions.
If the site is to be surveyed with the aid of the transmitter used in Induction mode, the position of
the transmitter should be changed by at least one metre and 90° after the first sweep of the site and
the site should be probed again in the same manner.
A minimum spacing of 15 m between the transmitter and receiver must always be maintained.
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