3M 2273M Benutzerhandbuch

78-8130-6150-0 Rev G 

23

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.