Elcometer SG80BDL Manuel utilisateur

Model SG80BDL

Sonic Gauge

Operating Instructions

This product meets the Electromagnetic Compatibility Directive.

These operating instructions are available for download on our website www.elcometerndt.com.

The following trademark is a registered trademark of Elcometer Limited, Edge Lane, Manchester,

M43 6BU. United Kingdom:

All other trademarks acknowledged.

transmitted, transcribed, stored (in a retrieval system or otherwise) or translated into any language,

in any form or by any means (electronic, mechanical, magnetic, optical, manual or otherwise)

without the prior written permission of Elcometer Limited.

TMA-0508 Issue 01

Text with cover: 23165

Contents

1 About your Gauge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 The Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 The Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 The Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Measurement - Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7 Setting up the Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

8 Measurement - Taking Readings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9 Display - Using the B-Scan View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

10 Gain - Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

11 ThruPaint™ Measurement Technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

12 Measurement - Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

13 Measurement - Recording your Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

14 Gauge Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

15 Data Transfer Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

16 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

17 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

18 Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

19 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

20 Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

21 Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

22 Condition and Preparation of Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

23 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

24 Sound Velocities of Common Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

25 The Menu Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Thank you for purchasing this Elcometer NDT product. Welcome to Elcometer NDT.

The Model SG80BDL Sonic Gauge is a world beating product. With the purchase of this gauge you

now have access to the worldwide service and support network of Elcometer NDT. For more

information visit our website at www.elcometerndt.com.

1 ABOUT YOUR GAUGE

The Model SG80BDL is a sonic gauge that measures with extreme versatility. It has the ability to

measure coatings and material thickness simultaneously while maintaining the ability to locate pits,

flaws and defects in the material. Based on the same operating principles as SONAR, the Model

SG80BDL is capable of measuring the thickness of various materials with accuracy as high as 0.01

millimetres (0.001 inches). The principal advantage of ultrasonic measurement over traditional

methods is that ultrasonic measurements can be performed with access to only one side of the

material being measured.

The Model SG80BDL includes a data-logging (memory) facility which allows readings to be stored

in batches before being downloaded to a computer.

1.1 Standards

Your gauge can be used in accordance with the following Standards and test methods;

ASTM E 797, EN 14127 and EN 15317.

1.2 What this box contains

Model SG80BDL, Bottle of couplant, Battery (3 x), Carrying case, Test Certificate, Operating

instructions, CD with software to enable you to transfer your readings and settings to and from a

PC, RS232 cable and USB to Serial converter.

Note: The box does not include a transducer; these must be ordered separately. To order a

transducer, contact Elcometer NDT or your local Elcometer NDT supplier.

1.3 Packaging

The gauge is packed inside its carry case within a cardboard box. Please ensure that the packaging

is disposed of in an environmentally sensitive manner. Consult your Local Environmental Authority

for further guidance.

To maximise the benefits of your new Elcometer NDT gauge, please take some time to read

these Operating Instructions. Do not hesitate to contact Elcometer NDT or your

Elcometer NDT supplier if you have any questions.

2 THE KEYPAD

Activates the primary menu structure containing 7 menu tab groups. These tab

groups then contain sub menu items, or functions. The sub menu items are

organised in tab groups according to how closely they are related to the

individual tab group names.

Clears a measurement from a grid log files cell location or set obstruct, and

backspace in an Alpha Edit Box. If you have already saved a measurement and

B-Scan to a cell location, use this key to clear the measurement at any time.

Press to start taking measurements. The readings are displayed in the upper

half of the screen and the measurement hot menu items are displayed in the

lower half of the screen. Scrolls forward through hot menu items.

Press to confirm a change or selection. If your gauge is displaying a grid log,

this key toggles an advance to row number option.

In the MENU, MEAS and EDIT functions this key acts as a back or escape

function. If your gauge is displaying a grid log, the key toggles the display

options; DIGITS or B-SCAN. Scrolls back through hot menu items.

In the menus, scrolls through the menus, increases/decreases values, and

toggles functions.

In menus this key activates list and edit boxes, displays and saves

measurements to grid files locations.

While making measurements, when COL or ROW is highlighted, opens a log

file.

Press to select a measurement mode. The measurement modes available

depend on which transducer is being used:

• Pulse-echo (P-E),

• Echo-echo (E-E), ThruPaint™

Press to switch the gauge on or off.

When switching off, the gauge retains all of its settings.

If the gauge is idle for 5 minutes, it will switch itself off.

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3 GETTING STARTED

3.1 Fitting batteries

Your gauge may be used with dry cell batteries or rechargeable

batteries. 3 x LR6 (AA) alkaline batteries are supplied with this

gauge.

When the battery voltage is low the entire display will start to

flash. When this occurs the batteries should be replaced.

To fit or replace batteries:

1. Locate battery compartment cover at top of gauge.

2. Unscrew battery compartment cover.

3. Referring to battery polarity instructions on rear of gauge,

insert batteries into gauge ensuring correct polarity.

4. Replace battery compartment cover.

Note: Remove the batteries from the gauge if it is to remain

unused for a long period of time. This will prevent damage to the

gauge in the event of malfunction of the batteries.

3.2 Choosing the transducer

When you purchased your gauge you should have also

purchased a suitable transducer for your application. If you have

not yet done so, refer to “Transducers” on page 30, which will help you identify the correct

transducer type. Alternatively contact Elcometer NDT, your local Elcometer NDT supplier or visit

www.elcometerndt.com

3.3 Fitting the transducer

The transducer transmits and receives ultrasonic sound

waves that the gauge uses to calculate the thickness of

the material being measured.

The transducer connects to the gauge via the attached

cable, and two coaxial connectors. When using

transducers manufactured by Elcometer NDT, the

orientation of the dual coaxial connectors is not critical;

either plug may be fitted to either socket.

The transducer must be used correctly in order for the gauge to produce accurate, reliable

measurements.

The illustration shows the two semicircles of the wearface

and the barrier separating them on a typical transducer.

One of the semicircles transmits ultrasonic sound into the

material being measured, and the other semicircle

receives the sound echoes back into the transducer.

When the transducer is placed against the material being

measured, it is the area directly beneath the centre of the

wearface that is being measured.

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compartment

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Wearface

3.4 Switching on/off

To switch on or off, press the on/off key .

The gauge will switch off automatically after 5 minutes of inactivity.

4 THE MENUS

Your gauge has two menu systems:

• Full menu - displays all the functions and settings of the gauge (see also page 35).

• Hot menu - displays a sub-set of functions and settings related to taking measurements.

4.1 Full Menu

4.2 Hot Key Menu

Press once to

access the menus... then press to

scroll to the right along

the sub menu bar and

to scroll left to the

sub menu you want.

Use and to

scroll to the function

youwantwithinthesub

menu...

then use and

to:

• scroll to the option

you want, or

• select/unselect

Press once to

access the

measurement screen.

The hot menu

functionsare displayed

at the bottom of the

reading screen.

Press to scroll

right along the hot

menu functions and

to scroll left until

the function you want

is highlighted.

Use , ,

and to adjust the

value of the function.

Alternatively, adjust

B-ST and B-DEP by

pressing thenuse

, , and

to scroll and

adjust values. Press

when finished.

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0.16 0.39 0.61 0.83

VIEW: DIGITS SCAN: ON

FILE : #E66

MODE: E-E GAIN: MED

B-ST: 0.00 B-D EP: 1.00

COL: A ROW: 1

VIEW: BSCAN SCAN: ON

FILE : #E66

MODE: E-E GAIN: MED

B-ST: 0.00 B-D EP: 1.00

COL: A ROW: 1

VIEW: BSCAN SCAN: ON

FILE : #E66

MODE: E-E GAIN: MED

B-ST: 0.00 B-DEP: 1.00

COL: A ROW: 1

VIEW: DIGITS SCAN: ON

FILE : #E66

MODE: E-E GAIN: MED

B-ST: 0.00 B-DEP: 1.00

COL: A ROW: 1

0.16 0.39 0.61 0.83

4.3 Selecting menu language

The menus can be displayed in English, Spanish, and German.

1. Press , scroll to the SETUP menu and then highlight the LANGUAGE function.

2. Use the and arrows to scroll the language options.

3. Once the desired language is displayed, press to return to the measurement screen.

5 THE DISPLAY

The contents of the display vary according to whether you are taking measurements, configuring

your gauge or working with measurement data.

5.1 The Measurement Screen

Press to see the measurement screen. There are two views of the measurement screen;

Digits view and B-Scan view. The majority of the information displayed is common to both views.

To select which view to use, press , select DISP, select VIEW and then select DIGITS or

B-SCAN, or adjust the VIEW function in the hot menu.

A Battery Icon Indicates the battery life remaining.

B Repeatability/Stability

Indicator When taking readings, this indicator is used in conjunction with the

digital thickness values displayed. When all the vertical bars are

fully illuminated and the last digit on the digital thickness value is

stable, your gauge is reliably measuring the same value 3 to 32

times per second, depending on which measurement mode and

features are enabled.

C Material Thickness

Value The thickness of the material under the transducer - small digits.

D Units The current measurement units (Metric/English).

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Digits View B-Scan View

VIEW: DIGITS SCAN: ON

FILE : #E66

MODE: E-E GAIN: MED

B-ST: 0.00 B-DEP: 1.00

COL: A ROW: 1

0.16 0.39 0.61 0.83

VIEW: BSCAN SCAN: ON

FILE : #E66

MODE: E-E GAIN: MED

B-ST: 0.00 B-DEP: 1.00

COL: A ROW: 1

0.16 0.39 0.61 0.83

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5.2 Front panel lights

The green light illuminates when the alarm mode is active and the measured thickness is within

limits.

The red light illuminates when the alarm mode is active and the measured thickness is less than

the alarm low value, or the measured thickness is greater than the alarm high value.

6 MEASUREMENT - MODES

Your gauge has two measurement modes, Pulse-Echo and Echo-Echo.

1. To select measurement mode, adjust the MODE function in the hot menu, alternatively press

, select PROBE, select MEASURE MODE and then select E-E or P-E GT. Note that the

availability of the modes depends upon the type of transducer fitted to the gauge.

E Material Thickness

Value The thickness of the material under the transducer - large digits.

F Scan Bar Provides a view of material thickness as a deflection style

horizontal bar. This is a visual tool that shows thickness changes

due to flaws and pits during high speed scans.

If the user is scanning a cylinder wall, for instance, and passes over

a porosity or internal flaw during the process, the scan bar will

quickly deflect and alarm the user to go back and search for the

defect.

To adjust the scale of the scan bar, adjust B-START and B-DEPTH.

G Measurement Labels The measurement labels are calculated and displayed based on

where the left side of the display has been set (Delay), and the

overall viewable area (Width) of the display. Note: The gray hash

marks break the display up into 5 segments, or quadrants. The

measurement labels correspond to the measurement at each hash

mark.

H Hot Menu Each of the fields located under the display are called the Hot

Menu Fields. These fields allow quick control of some of the fine

adjustments needed to control the display settings, measurement

modes, and grid memory control. All of these fields can be adjusted

without having to activate the tabbed menu items and search

through a variety of menus to make adjustments.

I B-Scan Display Area This is the area representing where the B-Scan is drawn. Notice

the range of 0.00” to 1.00” in this diagram.

J Displayed B-Scan Graphical presentation of the cross section, or side view of the test

material. In this example, the top, or accessible side of the material

is represented as 0.00”, and the bottom, or blind surface at .500”.

The B-Scan is displayed from right to left at a rate of 15 screens per

second.

In this B-Scan example the contour indicates a very corroded

bottom surface.

K Contour (blind surface) A view of the B-Scan displaying the blind side surface contour of

the material.

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6.1 Pulse-Echo Mode (P-E)

This mode measures from the initial pulse (sometimes referred to as an artificial zero) to the first

echo (reflection). This mode only requires one reflection and it is therefore the most sensitive mode

for measuring weak reflections (flaws) typically found when measuring heavily corroded metals. If

this mode is used to measure a coated sample, then the thickness of the substrate plus coating will

be measured.

Note: Rough surface conditions can have an effect on the overall accuracy in this mode. If the

surface condition is in question, the pulse-echo mode should be used in conjunction with performing

an off block automatic zero as the temperature gradient changes.

6.2 ECHO-ECHO MODE (E-E), THRUPAINT™

This mode measures between two reflections. This technique is commonly used to eliminate errors

from surface coatings and also to make measurements in multiple layered materials. The

disadvantage is that two echoes are needed which requires a much stronger echo (reflection).

ThruPaint™ mode cannot be used for flaw or pit detection. Therefore, inspectors may need to use

this mode in conjunction with the standard coating off (pulse-echo) flaw detection mode for some

applications. Chassis tubing inspectors and sanctioning bodies will typically use the echo-echo

mode for tubing with powder coatings, and pulse-echo mode for tubing without coating. This

combination of using both modes is ideal for very detailed inspections.

7 SETTING UP THE GAUGE

7.1 Transducer - Setting Type Of

The first step in using your gauge is to select the transducer type from the predefined transducer

list stored in the gauge by frequency and diameter. By selecting the transducer type from this

predefined list, your gauge will recall specific properties about the transducer.

Once the transducer has been selected, your gauge will recall this transducer type every time it is

switched on. The type will only change if you select another transducer type from the list, or if you

select a previously saved setup. However, your gauge will continue to take you through these steps

each time it is switched on. The transducer type previously selected will be highlighted every time

the transducer type screen is displayed.

Follow these steps to select your transducer type:

1. Press , scroll to the PROBE menu, scroll to the TYPE function

and then press .

A list of transducers is displayed.

2. Use the and arrows to scroll through the list until the

appropriate type is highlighted and then press .

Note: Ensure the transducer type you select is the same as the

transducer plugged into your gauge; failure to do this will result in

erroneous measurements.

3. When the CONFIRM screen displays ‘APPLY NEW TRANSDUCER TYPE’, press to

overwrite the existing transducer type with the newly selected transducer type.

TYPE 1

GAIN MED

MEASURE MODE E-E

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