Heath Consultants Aqua-Scop User Manual

AQUA-SCOPE

User Manual

®

Proprietary Notice

The contents of this manual are proprietary to Heath Consultants
Incorporated. Reproduction of this manual, in whole or in part, is
prohibited without the express written consent of Heath Consultants
Incorporated.

Heath Consultants Incorporated operates under a continual product
improvement program and reserves the right to make improvements

and/or changes without prior notication.

This manual supersedes all previous manuals for the Heath Aqua­Scope.

HPN 2913769
Revision B

©COPYRIGHT 2001, Heath Consultants Incorporated

AQUA-SCOPE

User Manual

®

Heath Consultants Incorporated
Houston, TX
713-844-1300
Fax: [phone]

1-800-HEATH-US

www.heathus.com

Heath....Safety, Leadership, Innovation, Performance

Then, Now and Tomorrow

INTRODUCTION

Economy and hygiene demand the most expedient way to locate and
repair water pipeline damage. More extensive water leaks can also

result in considerable danger to trafc by causing street ooding.

The best method to locate and pinpoint leaks in water pipelines is
by means of electro-acoustical detection. The sounds made by water
escaping from a water leak spread as spherical background waves in
the ground. The sounds are also transmitted by the (metallic) pipeline
itself. The use of suitable detecting devices enables us to determine the
exact location of a leak by listening to the escaping water from a small
hole in the water pipeline. The sounds made from such leaks provide
a good condition for electro-acoustical water leak detection.

FUNCTION

The Heath Consultants Incorporated AQUA-SCOPE® System is
an advanced state-of-the-art electro-acoustical water leak locator

designed to provide the operator with the means for efcient locating

and pinpointing of water pipeline leaks.

The instrument amplier/receiver unit provides a wide range of clarity,

simplicity, and ease of control. The ground and hand microphones
have good wind immunity for outdoor use. A removable handle and
extension rods are handy for compact storage.

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TABLE OF CONTENTS

INTRODUCTION...........................................................................1

FUNCTION ........................................................................................1

TABLE OF CONTENTS .....................................................................2

CHAPTER I

I. AQUA-SCOPE SYSTEM, COMPLETE:

AQUA-SCOPE Basic System (Figure 1) ..................................4

II. AQUA-SCOPE SYSTEM, COMPLETE W/OPTIONAL
ACCESSORIES:

AQUA-SCOPE System with Optional

Accessories (Figure 2) .............................................................5

A. Amplier Module (Figure 3) ........................................6

B. Ground Microphone (Figure 4) .....................................7

C. Direct Contact Microphone (Figure 5)............................9

D. Headphones (Figure 6) ...............................................10

E. Meter Module (Figure 7) .............................................11

F. Resonant Plate (Figure 8) ............................................12

G. Plunger Bar (Figure 9) ................................................13

CHAPTER TWO

III. PRINCIPLES OF SOUND:

A. Engineering References ............................................14

B. Relating Sound Principles

to Leakage Detection .................................................17

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CHAPTER THREE

IV. AQUA-SCOPE OPERATION:

A. Application ................................................................ 19

B. Leakage Detection with the

Direct Contact Microphone ......................................... 19

C. Pinpointing with the Ground Microphone .................... 22

D. Exercises with the Direct

Contact/Ground Microphones .................................... 25

E. Graphical and Numerical Determination

of the Point of Leakage ........................................... 26

F. Practical Examples ............................................... 29

G. Alternate Methods of Leakage Detection ..................... 31

CHAPTER FOUR

V. SERVICE INFORMATION:

A. Warranty and Warranty Repair .................................... 33

Customer Assistance, Manufacturing and

Service Locations ....................................................Back Cover

3

CHAPTER ONE

I. AQUA-SCOPE SYSTEM, COMPLETE:

7

3

5

1

4

2

6

(Figure 1)

AQUA-SCOPE Basic System (part No. 2903768)

1. Direct Contact 5. Ground Microphone

Microphone w/ext w/Handle
(Part No. 2916428) (Part No. 2916427)

2. Amplier Module 6. Microphone Cables (2)
(Part No. 2916426) (Part No. 2916411)

3. Headphones 7. Carrying Case
(Part No. 2911352) (Part No. 2913767)

5

4. Instruction Manual

(Part No. 2913769)

4

II. AQUA-SCOPE SYSTEM, COMPLETE W/ OPTIONAL
ACCESSORIES:

9

8

10

(Figure 2)

AQUA-SCOPE System with Optional Accessories

8. Meter Module w/ Battery 12. Good Vibrations VHS
Charger (110 VAC) Video Training Present­ (Part No. 2923754) tation (Not Shown)
(Part No. 7106653)

9. Resonant Plate 13. Meter Module
with 18” Spike w/ Battery Charger
(Part No. 2921326) (220 VAC) (Not Shown)
(Part No. 2923698)

10. Magnetic Tip used with 14. Ear Pad Cover used

The Direct Contact w/ Headset (Not Shown)

Microphone (Part No. 2927414)

(Part No. 2923776)

11. Plunger Bar w/ Insulated

Handle (Not Shown)

5

A. Amplier Module (Part No. 2916426)

(Figure 3)

1. General Specications:

Weight: 1.37 lbs. (620 grams) including batteries.
Size: 5” deep x 3.7” wide x .4” thick (12.7 x 9.40
x 6.096 cm) including all projecting knobs,
clips, and jacks.
Batteries: Requires 2 alkaline 9-volt batteries. Eveready
522, Mallory MN1604 or any NEDA 1604A

type is recommended.

Battery Life: Approximately 30 hours.
Amplier
Gain: Approximately 3 x 105 volts/volt maximum.

Storage

Temperature: Limited to the specications on the batteries

used.

Figure 3 depicts in two views the Amplier Module with all hardware,
in put/output jacks, and controls. Battery access is gained by removing

the Battery Access Plate, exposing the two nine volt batteries, which

power the instrument. The battery adjacent to the input jack should
be removed rst. The second battery may require lateral movement
toward the input jack end to clear the opening. Replacement and inser­tion should be performed in the opposite sequence. Be careful not to

cross thread the access plate retaining screw when securing the battery
access plate.

6

The push button “LISTEN” control switch should only be depressed

after the ground microphone has been rmly placed on a solid surface

and one to two seconds Sensor Settle Time elapsed. When using the

direct contact microphone, be certain that the tip is in rm contact with

the pipe, valve box, etc., before depressing the “LISTEN” control
switch.

B. Ground Microphone (Part No. 2916427)

(Figure 4)

1. General Specications:

Construction: Acoustically suspended variable

reluctance sensor

Impedance: 380 Ohm DC resistance

Frequency
Response: 10 - 300 Hertz

Weight: Approximately 2 Lbs. 5 Oz.

(1049 grams)

7

Figure 4 illustrates the Ground Microphone with the Ground Microphone
Handle. The shock insulator minimizes sound coupling through the handle.
The foam rubber sound seal restricts ambient noises, which may be pres­ent in the work area. The internal sensor is suspended and magnetically

shielded to improve the signal to background noise ratio. The 1/4” plug
mates with the 1/4” jack labeled “M” on the Amplier Module via one of

the two Microphone Cables.

8

C. Direct Contact Microphone (Part No. 2916428)

(Figure 5)

1. General Specications:

Construction: Cold rolled steel case. Stainless steel

sensor shaft, probe tip, and extension

rods. Rods are 5/16” diameter. All
threaded sections are #10-32 thread.

Poured in place, the urethane core
suspends the sensor shaft in the body
for acoustical isolation. Each Direct
Contact extension is 24” long.

Sensor: Piezo-Ceramic, resonant at
approximately 3000 Hz.
Frequency
Response: Approximately 300-6000 Hertz.

The Direct Contact Microphone, microphone tip, optional magnet,

and two extensions are depicted in Figure 5. All threaded joints are

stainless steel on the Direct Contact Microphone; probe tip, and the

extensions. The 1/4” plug mates with the 1/4” jack labeled “M” on
the Amplier Module via one of the two Microphone Cables.

9