RIDGID SeekTech ST-305 Operator's Manual download pdf (Page 10)

8 www.seektech.com Ridge Tool Company ● Elyria, Ohio ● U.S.A

SeekTech ST-305 Line Transmitter

Using the ST-305 Line

Transmitter

The SeekTech ST-305 line transmitter is part of

Ridgid’s Seektech cable and pipe locating system.

The ST-305 is used to energize a pipe or line with an

“active” electrical signal, so that the underground line

may be traced with a compatible receiver (such as

the Seektech SR-20). This allows the line’s location

to be correctly marked so it can be exposed for repair

or avoided during excavation.

The ST-305 line transmitter can apply an active

tracing signal to a target conductor in three ways:

Direct Connect – The transmitter’s leads are

connected directly to the target conductor and a

suitable ground. See page

The ST-305 is capable of dual-frequency

transmission (sending two frequencies onto a line

simultaneously) in direct-connect mode. See page

10.

Inductive Clamp – The jaws of the inductive clamp

encircle the target conductor; there is no metal-to-

metal contact. (The inductive clamp is an optional

accessory). See page

11.

Inductive Mode (internal coils) – The transmitter is

placed over, and in-line with, a conductor. Its internal

antenna generates a dipole field which energizes the

target conductor below ground, inducing a current

into the target conductor. See page

11.

DANGER

Always connect leads before turning the

transmitter on to avoid electrical shock. Ensure

transmitter is well grounded.

Direct-Connect Method

1. Attach the ST-305 line transmitter to

ground and to the target line.

Remove the ground stake from the end of the unit

and insert it into the ground. Connect one of the

cable leads to the grounding spike. The leads are

universal, so either may be used for the ground.

Figure 4: Connecting the ST-305 Ground Stake

Connect the other lead to the target conductor.

Figure 5: Connecting the ST-305 to a Line

Figure 6: Alternative Hookup Method

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RIDGID SeekTech ST-305 Operator's Manual Page 10

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