Pipehorn 100 Manuel utilisateur

Model 100

Pipe and Cable Locator

User Manual

Manufactured Exclusively By:

Utility Tool Company, Inc.

29 Commerce Boulevard

Birmingham, Alabama 3521

2 5-956-371

Under U.S. Pat # 3418572 Canadian Pat # 8575 4 Other Patents Pending

DANGER! SHOCK HAZARD

CONNECTING DIRECTLY TO ANY CONDUCTOR

CAN BE HAZARDOUS AND RESULT IN ELECTRIC

SHOCK, INJURY, OR DEATH. ONLY LICENSED OR

AUTHORIZED PERSONS SHOULD MAKE DIRECT

CONNECTIONS TO POTENTIALLY ENERGIZED CON-

DUCTORS.

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions: (1)

this device may not cause harmful interference, and (2)

this device must accept any interference received, includ-

ing interference that may cause undesired operation.

NOTICE

This User’s Manual is provided as an informational

guide only and is subject to change without notice.

This Manual contains certain information which is

proprietary in nature and protected by U.S. and Foreign

Patents, Copyrights, and Registered Trademarks. All

rights are reserved. No part of this document may be pho-

tocopied, reproduced, transmitted, or converted into an-

other language without the express written consent of Util-

ity Tool Company, Inc.

CONTENTS

Section Title Page

General Information 4

Equipment Description 5

Operation 6

Battery Locations 9

Maintenance 1

Repair or Service 11

RECEIVER UNIT

PIPEHORN

GENERAL INFORMATION

The Pipehorn is a carefully engineered, hand-crafted,

precision instrument which, with reasonable care, will give many

years of satisfactory service. It is the finest instrument on the

market today for locating underground or concealed piping, tub-

ing or cable. It is very simple to use but for best results you

should carefully read these instructions and be guided by them.

Since the Pipehorn uses a high frequency electrical cur-

rent, it can only be used to locate metallic structures such as

steel or cast iron pipe, copper or aluminum tubing or wire. It can

be used to find plastic or clay pipe if a wire or metallic tape can

be inserted into the pipe or if a wire was buried with the pipe.

Soil or paving materials such as concrete or asphalt

have little or no effect on the operation of the Pipehorn. How-

ever, reinforced concrete contains a network of metal which will

interfere with the proper operation of the instrument, and it usu-

ally cannot be employed to locate structures underneath or be-

hind reinforced concrete, metal lath or similar materials.

TRANSMITTER UNIT

EQUIPMENT DESCRIPTION

The instrument consists of two units. The TRANSMITTER,

which is the small black box, produces a high frequency signal which

is reproduced in the pipe by one of two methods. When it is placed

in the area of the pipe with its longest dimension parallel to the pipe,

it will inductively create a similar signal in the pipe. It may also be

directly connected to the pipe at a water faucet, gas meter, water

meter or other above ground connection by using the two binding

posts on top of the TRANSMITTER. One post should be connected

to the structure and the other to a metal rod which is pushed into the

ground nearby to a depth of six or more inches. Do not place the

TRANSMITTER directly on metal covers.

The latter method has certain advantages in that it produces

a stronger signal in the pipe and thus allows the RECEIVER to be

used at a greater distance from the TRANSMITTER. It also helps to

avoid picking up other nearby structures by confining most of the

signal to the structure being sought.

The inductive method, however, produces excellent results

in most cases and is certainly faster and simpler than the direct con-

nection method.

The RECEIVER unit contains the receiving apparatus to pick

up the signal, a sound generator and a device to produce an

audible signal. Its operating controls consist of a spring return

switch and a gain control. The purpose of the gain control is to

allow exact pinpointing of the pipe or cable by reducing the in-

strument’s sensitivity to the locating signal to a point which will

just produce a low tone when the head of the RECEIVER is ex-

actly above the structure. By careful manipulation of the RE-

CEIVER head and adjustment of the gain control the pipe or ca-

ble can usually be located within a few inches.

OPERATION

In normal operation using the inductive method, the

TRANSMITTER is placed on the surface of the ground or pave-

ment with the box having its longest dimension parallel to the

suspected location of the pipe or cable. It should be placed di-

rectly over the structure if its location is known, such as at a me-

ter or other connection. If the location is not known it should be

placed in the general area for preliminary location procedures

(see photo).

The switch should then be placed in the “ON” position

and the TRANSMITTER left in this position until the structure has

been spotted in the manner described.

ADJUSTING CONTROL

With the gain control turned all the way counter-

clockwise, move away about ten feet and depress the switch

on the RECEIVER hand grip. The head (the cross-like section

at the end of the probe rod) should be held close to the ground

with the two cross ends in a line which crosses the suspected

location of the structure. When the head is over the structure a

deep tone will be produced. The TRANSMITTER may now be

positioned exactly over the structure should this not already be

the case.

Now move away from the TRANSMITTER, sweeping

the RECEIVER head over the surface until a tone is heard. As

the distance is increased, it will be necessary to turn the gain

control in a clockwise direction in order to pick up sufficient

signal to produce a tone. Careful manipulation of the head and

control will allow the structure to be located within a few

inches.

When the distance between the TRANSMITTER and

the RECEIVER has reached a point where no sound is pro-

duced with the control turned fully clockwise, the last located

position should be marked and the TRANSMITTER moved to

that point. The same procedure can then be followed as de-

scribed above. Using this system the pipe can be followed for

unlimited distances. (The maximum distance between TRANS-

MITTER and RECEIVER will vary with soil conditions and other

factors and may range from several hundred feet under good

conditions down to as little as fifty or so under extremely adverse

conditions.)

PINPOINTING

When two structures, such as gas and water mains,

are fairly close together, care must be exercised in the adjust-

ment of the control so that the unit responds only to the

stronger signal which radiates from the desired structure. Use

of the direct connection system may make it far easier to differ-

entiate between structures under such conditions.

Although the Pipehorn is easy to use, a little training

and practice will increase its effectiveness. Practicing with the

unit over a known main is an effective and practical way to im-

prove one’s skill in its use.

FINDING CONDUCTOR DIRECTION

As soon as the locating work has been completed, the

TRANSMITTER switch must be FLIPPED TO THE “OFF” POSI-

TION in order to prolong battery life.

To change the batteries simply use a Phillips Head

screw driver to remove the covers as shown below.

MAINTENANCE

Your Pipehorn was carefully pre-adjusted at the factory and no

further internal adjustments should be required. It is constructed entirely

of solid state devices and, therefore, contains no tubes to burn out. With

reasonable care it should have an indefinite useful life.

Each of the two units contains batteries for their power source

and they should be changed periodically. Naturally the life of the battery

is determined in large measures by the extent of usage of the device.

Should the sound become weak, the operating distance decrease, or

should the instrument become inoperative, it is likely the result of dead

batteries. Batteries should be changed as needed, but additionally it is

recommended that they be changed once every six months to be certain

that the instrument will be ready to operate when needed.

NOTE: The usual reason for an inoperative TRANSMITTER unit

is that the switch was not returned to the “OFF” position when the work

was completed. Operators should be careful to turn the unit “OFF” after

each job.

Use the following batteries:

Transmitter: 6 alkaline “AA” cells

Receiver: One 9-volt alkaline cell

WARRANTY

THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING

ANY WARRANTY OF MERCHANTABILITY, BEYOND THOSE STATED

BELOW.

Utility Tool Company, Inc. warrants the equipment it manufactures to be

free from defects in workmanship or material, under normal and proper

use and service by the original user, for three years from the date of

original shipment from the factory. Batteries and other expendable items

are not included in this Warranty. Unauthorized repair, alteration, or

improper maintenance will void this Warranty. Alteration or removal of

the serial number will also void the Warranty. Utility Tool Company will

not be obligated under this Warranty if the equipment has been misused,

misapplied, or accidentally damaged.

If a product is found defective under this Warranty, Utility Tool Company

will, at its option, repair or replace the unit free of charge at Utility Tool

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