AND AD-3255 Manuel utilisateur

Ultrasonic Thickness Gage

1WMPD4003292A

Note

No part of this publication may be reproduced, transmitted,

transcribed, or translated into any language in any form by any

means without the written permission of A&D Company, Limited.

The contents of this manual and the specifications of the

instrument covered by this manual are subject to change for

improvement without any notice and obligation on the part of the

manufacturer.

ULTRAGEL II , HIGH Z and SONO are registered trademarks

of the Magnaflux company.

－1 －

Contents

1. Safety Information ....................................................................2

1-1-1. Meaning of Alert Indications ................................................2

1-1-2. Cautions Concerning Safety Indications..............................2

1-1-3. Cautions Concerning Performance .....................................3

2. Introduction ..............................................................................4

2-1. Features .................................................................................4

3. Overview "

Unpacking, Names, Operation & Response

".........................6

3-1. Unpacking ..............................................................................6

3-2. Names....................................................................................7

3-3. Operation and Response........................................................8

4. Measurements........................................................................ 11

4-1. Preparation........................................................................... 11

4-2. Basic Measurement..............................................................12

4-2-1. Primary Operation.............................................................12

4-2-2. Probe -Zero Function ......................................................14

4-2-3. Switching the Display Resolution ......................................15

4-2-4. Switching Measurement Modes ........................................15

4-3. Sound Velocity Calibration....................................................16

4-3-1. Use of Sound Velocity Calibration .....................................16

4-3-2. Calibration of Known Sound Velocities..............................17

4-3-3. Calibration of Unknown Sound Velocities..........................17

4-3-4. Two point calibration for Sound Velocities .........................18

4-3-5. Initialization of Sound Velocities ........................................19

4-3-6. Pre-installed Sound Velocities..........................................20

5. Information and Cautions .......................................................21

5-1. Battery..................................................................................21

5-2. Transducer ...........................................................................21

5-3. Measurement of the Tube & Pipe .........................................24

5-4. Couplant...............................................................................26

5-5. Measurement Principle.........................................................27

5-6. Reference Data of Sound Velocities .....................................28

6. Specifications .........................................................................29

－2 －

Safety Information

This section describes information to use the AD-3255 safely and

to prevent injury.

1-1-1.

Meaning of Alert Indications

All safety messages are identified by the following of ANSI Z535.4.

Each alert indication has the following meaning.

Warning Definitions

Warning

A potentially hazardous situation which, if not avoided,

could result in death or serious injury.

Caution

A potentially hazardous situation which, if not avoided,

may result in minor or moderate injury or damage to the

instrument.

This is a hazard alert mark.

Operation is prohibited.

Others

Caution

An important description for proper use of the instrument.

Note

The information that helps users operate the instrument.

1-1-2.

Cautions Concerning Safety Indications

Caution

Repair Only authorized individuals may open the case and repair the

AD-3255. Loss of data or malfunctions may result from

opening the case. Contact your local dealer or our service

department to resolve the issue.

Failure Should the AD-3255 experience a malfunction, stop usage

immediately, post a notice indicating "

Out of Order

" on the

AD-3255 and move it to place where it will not be used by

mistake. Continued usage of it in this state is very dangerous.

Contact your local dealer for repair.

－3 －

1-1-3.

Cautions Concerning Performance

Gently use the AD-3255 because of the precision instrument.

Strong impacts could result in a malfunction.

Use the accessory carrying case for transport.

The main unit and transducer are calibrated as pair in the factory.

Failure to use an authorized transducer may result in incorrect

thickness measurements. Always keep the main unit and transducer

as pair when asking for a repair.

The AD-3255 is not waterproof. Avoid water, moisture, oil and dust.

Avoid an extreme temperature change or impact. Do not immerse

the transducer in water or oil.

Avoid contaminating the transducer connector with water, oil and dust.

Use the accessory strap as needed.

Example: Tie the strap to the main unit to avoid losing the test piece.

Tie the strap to the main unit to prevent the set from

being stored in a piecemeal fashion.

Do not pull excessively on or sharply bend the transducer cable.

Clean the main unit using a lint free cloth that moistened with water

and neutral detergent. Clean the connectors and electrical

terminals using a dry lint free cloth.

Operating temperature range : 0 [°C] to 50 [°C]

Remove the batteries from the main unit when the AD-3255 is not

used for a long time.

－4 －

Introduction

Congratulations on purchasing an ultrasonic thickness gage

AD-3255 of . We recommend that you read

through this manual carefully before using the AD-3255 for the first

time. Keep the manual nearby for reference.

2-1.

Features

The AD-3255 can measure the thickness of various materials using

a principle similar to sonar, displays the thickness value in 0.1 [mm]

or 0.01 [mm]units, and is equipped with a multimode feature.

The multimode feature

Pulse - Echo Mode

Use this mode for basic measurements or detection of flaws,

cracks and pits.

Echo - Echo Mode

When measuring the thickness, use this mode to eliminate

errors concerned with measuring coating and paint thickness.

Use the optional transducer, AD-3255-04.

The sampling mode

Single Point Mode

This mode can measure single point thickness where the

transducer is placed.

Sampling rate : 7[times/ second]

Scan Mode

This mode can display a minimum value from thickness in

areas where the transducer has been moved.

Sampling rate : 16 [times/ second]

－5 －

Probe-Zero Function

The AD-3255 is equipped with a probe-zero function to calibrate

the zero point of the transducer in the pulse -echo mode.

The sound velocity can be calibrated with a single point calibration,

two point calibration or numerical input.

The coupling state symbol indicates the state of the transducer

contacting the material surface.

The AD-3255 can store user settings and calibration data.

The battery indicator indicates the battery power.

The AD-3255 is equipped with an automatic power-off function:

When no operation is performed for approximately 5 minutes, the

display blinks for 20 seconds and then the power is turned off.

The AD-3255 can measure the thickness of other metal, plastic,

ceramics, composite materials, epoxy resin, glass and a variety of

other materials.

The range of sound velocity: 1000 to 9999 [m/s],

The range of thickness: 0.8 to 200 [mm],

Using the accessory transducer.

－6 －

Overview "

Unpacking, Names, Operation & Response

3-1.

Unpacking

Upon receiving the product, inspect the main unit and accessories

contained in the package. Should anything be missing or damaged,

contact and consult your local dealer.

Use the carrying case for transport.

Packing list is as follows:

Main unit .......................................................................................................................... 1

Test piece "

is equivalent to the thickness of

4.00

" AD-3255-01

.... 1

Transducer for the pulse -echo mode AD-3255-02 .... 1

Carrying case ............................................................................................................... 1

Empty bottle for the couplant .............................................................................. 1

Strap ................................................................................................................................... 1

Instruction manual "

This manual

" ........................................................................ 1

Main unit Test piece Bottle

Strap

Transducer for the

pulse -echo mode Carrying case This manual

－7 －

3-2.

Names

Coupling state

Battery indicator

Measurement mode

Units

Transducer connector "Transmitter"

Transducer connector "Receiver"

Battery cover

which covers the battery

box in which two

alkaline batteries, "LR6,

AA" can be installed.

Strap holes

Switches :

When pressed,

the buzzer sounds.

Display :

Thickness data and

settings are displayed.

References

Transducer for

the pulse - echo mode

Plugs

－8 －

3-3.

Operation and Response

Switches

Turns the AD-3255 on/off.

Turns the backlight on/off.

Changes the display resolution to 0.1 [mm]or 0.01 [mm].

Press the switch while pressing and holding the

switch after turning off the main unit.

Enters the sound velocity settings from the measurement.

Returns the measurement from the sound velocity

settings.

Starts the probe -zero function from the measurement.

Specifies a connected transducer in the probe -zero

function.

Increases the parameter in the setting mode.

Selects a measurement mode in the measurement.

Single point mode....................... Indication

Measures the thickness in the space where the

transducer is placed on the material surface.

Sampling rate : 7[times/sec.]

Scan mode............................................ Indication

Displays a minimum thickness from the measured data

in the area where the transducer has been moved.

Sampling rate : 16 [times/sec.]

Decreases the parameter in the setting mode.

Selects the measurement mode.

Pulse - echo mode....................... Hide +, Indication

This mode is for major measurements and can be used

to detect a flaw or pit.

Echo - echo mode....................... Show +, Indication

This mode can be measure the thickness that is

eliminated errors concerned with measuring coating

and paint thickness.

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