3M CablePipeFault Locator 25502573 Series User Manual

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6. Locating Buried Cables And Pipes
A.  Transmitter Connections
Perform a battery test. Use one of the following three methods to produce a trace signal 
on the target pipe or cable.
1. Direct Connect Method
! WARNING
This WARNING applies to the use of the Direct Connect Cables and the Transmitter.
To avoid potential shock, or electrically damaging the Transmitter, when setting up the 
Transmitter to locate using the Direct Connect method, follow these basic steps;
•    ALWAYS...

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− If the continuity of the circuit is very good (the reading on the display is less than 
3K Ω. and a solid tone from the transmitter is heard) all frequencies can be used to 
locate. Always use the lowest frequency available (for example, 577 Hz). Lower 
frequencies are less likely to ‘bleed over’ to other cables in the same area, and are 
very good for tracing over long distances.
 
− If the circuit reads more than 3K Ω., but less than lOK Ω (indicated by a beeping 
tone from...

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2. 3M™ 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 Dyna-Couplers - Part numbers 3019, 4519, 
1196/C
A potential for electrical shock exists when using the Dyna-Coupler on c\
ables energized with 
electrical power. Use appropriate safety procedures.
DO NOT USE ON CABLES CARRYING...

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3. Induction Method
If you cannot make a direct connection, or use the 3M™ Dyna-Coupler clamp to apply a 
locating signal on the target, use the induction method. When nothing is plugged into the 
Output Jack [T-6] of the transmitter the unit will be placed into induction mode when it 
is turned on. This method uses the internal coil of the transmitter to generate a magnetic 
field. This is the least preferred method of applying a signal on a target conductor 
because it can...

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Note: If nothing is plugged into the Output Jack [T-6] of the transmitter, the 
transmitter will automatically turn on the internal antennae, and the last frequency 
used (8 kHz, 33 kHz, 82 kHz or 200 kHz) will broadcast in induction mode.
The induction frequency can be changed by pressing the Trace [T-3] (Frequency [T-3] 
on 2550) button on the transmitter. For best results, the receiver should be at least 25 
feet (7.6 m) away from the transmitter to begin tracing the target...

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Walk in a grid pattern over the sweep area holding the receiver as shown in the 
following illustration. Stop when there is a response increase, locate the position of the 
maximum signal, follow the conductor path all the way out of the sweep area while 
putting location marks on the ground. Resume the sweep until another cable or pipe is 
detected, or the whole area is completely swept. Switch to another available passive 
frequency in the receiver and sweep again.
D....

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E. Two-person Active Induction Mode Sweeps
In two-person active induction mode sweeps, one person holds the transmitter and 
the other holds the receiver while walking together in a sweep pattern detecting long 
conductors in the ground when crossed by transmitter and receiver positions and 
orientation, as shown below:
Transmitter Set-up
• Remove anything plugged into the Output Jack [T-6] (this will place unit in Induction 
Mode), select high frequency (200 kHz), or medium...

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7. Receiver Locating Trace Modes
A.  Trace View (T-View)
TRACE [2]
Trace View mode, or T-View, provides an intuitive mapping display showing the utility 
path utilizing a dynamic directional arrows and path indication line. This combination 
provides an excellent visual representation of the utility path and directional assistance 
to assist in pinpointing the target.
Several displays may be seen when using Trace View:
Display 1.  When the receiver is outside of the detectable...

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Display 3. As the receiver antenna crosses the target, the receiver volume increases to 
a maximum, the signal strength will be at its maximum and the directional 
arrow will become a straight line that is closely lined up with the target line 
on the display. See following examples;
On Target Path
Display 4. A circle consisting of two arrows appears when the orientation of the receiver 
is not at the optimum position in relation to the target. The arrows indicate 
that the...

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The Induction Peak mode of the receiver is a mode in which the upper antenna of the 
receiver is tuned to minimize distortion from the magnetic field of the transmitter.
Left or Right of Target PathDirectly Over Target Path
D. Directional Peak (Dir Pk)
TRACE [2] + Mode [SK] + Dir Pk [SK Toggle] 
or Menu/OK [5] + Cable/Pipe [SK] + Mode [SK] + Dir Pk [SK Toggle]
In Directional Peak mode, four peak antennas are used to analyze the magnetic field 
pattern. The bar graph indicates...