Pipehorn Signal Clamp

Pipehorn 800 Signal Clamp

The Pipehorn signal clamp is designed for jobs where a direct connection is not possible. Simply place the clamp around the sheath of the line and let the transmitter induce a signal without a direct connection.

The signal clamp also has a threaded fitting on the handle, which allows it to be attached to a hot-stick for lines that are out of easy reach (stick not included).

SET-UP INSTRUCTIONS

1. Perform a quick system check of your Pipehorn 800 series pipe and cable locator by first plugging your clamp into the transmitter jack. When turned ON, the transmitter should emit a steady high pitch tone indicating a good battery and good signal output. Select low-frequency on your receiver (if using an 800-HL) and set the sensitivity knob precisely at 2. With the clamp laying on the ground, place the tip of the receiver wand into the ring. A beeping tone from the receiver indicates the clamp’s low-frequency is operational. Next, select high-frequency on your receiver. Keeping the sensitivity knob set at 2, place the tip of the receiver wand into the ring. A beeping tone from the receiver indicates the clamp’s high-frequency is operational.
2. Position the clamp around the target conductor below the electrical ground making sure the jaws on the signal clamp meet squarely and are fully closed. The better the jaws meet; the more signal will be applied to the target conductor. To ensure that the transmitter signal reaches the receiver, the path between the point where the signal is applied and the point where it is received must be complete. If you suspect a break in this path, look for disconnected leads, circuit breakers, and open switches. Both ends of the conductor should be grounded. If clamping around a gas pipe at a meter (for example), place the clamp below the insulator and attach a ground lead between the clamp and insulator. A week signal may be due to a poorly grounded conductor. Power lines and telephone sheaths are typically grounded on both sides of the signal clamp position.
3. Plug the signal clamp into the jack on the Pipehorn transmitter. Turn the transmitter on. Signal should now be applied to the target conductor.
4. Start with the receiver set for low-frequency (800-HL model). Begin tracing the signal. The clamp also works in the high-frequency mode.

INDIVIDUAL CABLE IDENTIFICATION

1. Set up the signal clamp around the target conductor as described above.
2. At the next vault or access point, place the tip of the Pipehorn receiver on each cable listening for the strongest signal. NOTE: This method will be successful only when there is no common or cross-bonding of the cables between the clamp (where the signal is applied) and the receiver (where the signal is detected).