GSSI StructureScan Mini XT Manual page 31

Geophysical Survey Systems, Inc.
Working with LineTrac
LineTrac is an optional accessory for your StructureScan Mini XT. It is a passive device designed to
detect AC current flowing through embedded electrical conduits. LineTrac will detect AC current flowing
at 50 or 60 Hz, but the conduit must be under load to be detectable. In other words, the device connected
to the conduit must be on and drawing current. LineTrac can only be used on the front accessory
attachment point. Please see Appendix D of this document for assembly instructions.
Note that LineTrac's detection capability and depth will according to several factors:
•
Conduit depth
•
Current (should be greater than 1 Amp)
•
Conduit material. Some of the signal may be dampened if the wire is sheathed in a metal conduit.
LineTrac is passive and does not emit any signals or energy. The use of LineTrac will not affect your
StructureScan Mini XT data quality in any way.
1
Find the LineTrac option in the secondary menu of the Scan Max carousel.
2
Click the middle keypad button to toggle to your location's AC frequency.
3
Configure the rest of your collection settings normally and collect data.
Note: LineTrac will only detect conduit which is under load, so be sure that whatever is connected to the
line you are trying to locate is turned on.
The LineTrac data will appear as a blue line at the bottom of the screen. You will also see the chosen
frequency value and a value representing relative signal strength. The line will auto-scale in response to
the strength of the EM field it detects so the line may shrink or swell at times. You will still want to cross
prospective conduits at a perpendicular angle.
MN 70-813 Rev E 19
StructureScan™ Mini XT
Manual