B. Dyna-Coupler Method
!WARNING
This WARNING applies to the following 3M™ Dyna-Couplers;
•3" (75 mm) - Part number 3001
•4.5" (114 mm) - Part number 4001
•6" (150 mm) - Part number 1196
•All accessory kits containing any of the listed 3M Dyna-Couplers - Part numbers 3019, 4519, 1196/C
A potential for electrical shock exists when using the 3M Dyna-Coupler on cables energized with electrical power. Use appropriate safety procedures.
DO NOT USE ON CABLES CARRYING IN EXCESS OF 600 VOLTS RMS.
Use a ground extension cable, or wire, and ground rod set-up between a target pipe/cable and a gas meter valve/box, or cable/ electrical meter box. This will isolate the locate signal to the target pipe/cable section below the meter/box, between the grounding points. This provides a good return path for the tracing signal. Insulating coupling above a gas meter valve on a pipe will isolate the returning signal from ground and may make locating more difficult.
1.Connect the 3M Dyna-Coupler to the transmitter Output Jack [T-6] using the coupler cable (9011).
2.Clamp the 3M Dyna-Coupler around the cable or pipe, below any bonds, just before it enters the earth. The jaws of the coupler must fully close.
3.Press Trace [T-3] to turn on the transmitter. Press again to select 8 kHz, 33 kHz or 200 kHz.
Note: When using a 3M Dyna-Coupler, always select high or maximum output power level by pressing the Output Level [T-5] key on the transmitter.
