11
Direct connection
Connection to a power cable sheath should only be undertaken by qualified
personnel.
Direct Connection is an effective way to apply the Loki transmitter locate signal
to a specific cable or pipe network so that it can be traced from above ground.
Connections can be made to any metallic part of the pipe or cable such as valves,
meters, junction boxes, street lights, pipeline markers or other access points.
Direct Connection Procedure
1. With the Loki transmitter switched off, plug the Direct Connect lead into the
accessory socket.
2. Attach the red lead to the pipe or cable (if necessary, clean the connection point
to ensure a good electrical contact). If the jaws of the clip do not open far enough,
and if the connection point is a suitable material, use the supplied magnet.
3.
Connect the black lead to the earth stake which should be secured in the ground
3 – 4m away from, and at right angles to the target line.
Alternatively the black lead may be clipped to a valve box, manhole cover or another
earthed point. Use the earth spool lead to extend the earth connection if necessary.
4. Switch the Loki transmitter on. A good connection is indicated by a drop in
loudspeaker tone. If there is no tone replace the batteries.
5.
Use Loki to scan the area. Start with the Loki transmitter’s lowest power setting.
A pulsed loudspeaker tone indicates a good connection. If there is no tonal
change, check the electrical contacts
and the ground. If necessary, change
the position of the ground stake or
pour water over the ground contact if
placed in dry soil or sand. If there is
still no change in tone increase the
power setting.
