3M 2250M-iD 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,
• 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.
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.