Elcometer UG20DL Bedienungsanleitung

Model UG20DL

Underwater Thickness Gauge

Operating Instructions

This product meets the Electromagnetic Compatibility Directive.

The product is Class A, Group 1 ISM equipment according to CISPR 11

Group 1 ISM product: A product in which there is intentionally generated and/or used conductively

coupled radio-frequency energy which is necessary for the internal functioning of the equipment

itself.

Class A product are suitable for use in all establishments other than domestic and those directly

connected to a low voltage power supply network which supplies buildings used for domestic

purposes.

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-0515 Issue 01

Text with cover: 23212

Contents

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

2 Safe use of your Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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

4 The Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

6 Measurement - Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7 Setting up the Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

9 ThruPaint™ Measurement Technique. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

10 Measurement Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

11 Measurement - Recording your Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

12 Data Transfer Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

13 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

14 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

15 Technical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

16 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

17 Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

18 Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

19 Condition and Preparation of Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

20 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

21 Sound Velocities of Common Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

22 The Menu Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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

The Model UG20DL Underwater Thickness 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 UG20DL is an underwater thickness 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 UG20DL 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 UG20DL includes a data-logging (memory) facility which allows readings to be stored in

the memory 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 UG20DL, 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 SAFE USE OF YOUR GAUGE

This gauge is suitable for use underwater at depths of up to 300 m (1000 ft) provided

that the following conditions are followed:

2.1 CARE OF THE HOUSING

1. Keep the gauge out of direct sunlight as much as possible to avoid any potential crazing or

stress cracking of the housing, as well as discolouration.

2. Protect the housing from impact.

3. Submerge or rinse the enclosure and transducers in fresh water following use.

4. Do not exceed the depth limitation of 300 m (1000 ft). Failure to adhere to this warning may

result in leakage, potential implosion and serious injury.

2.2 CARE OF THE HOUSING SEALS

The housing is sealed by o-rings, one on each end cap, which require meticulous care. In order to

maintain a watertight seal, the o-rings and their mating surfaces must be clean, free of foreign

material and lubricated with silicone grease.

The following procedure must be performed on the end cap o-rings before each use:

1. Clean all old silicone grease from o-rings and mating surfaces using paper towels.

2. Inspect o-rings for foreign material (sand, seaweed, hair, etc.), cracks, cuts, soft spots, or

deformities. Replace o-ring if damaged. Inspect mating surfaces for scratches, rough spots,

dents, or cracks.

3. Using a finger, apply a thin, even coat of silicone grease to o-rings on each end cap. Inspect to

be sure the o-ring has been properly fitted, and screw the end cap back in place, until it has a

nice snug fit.

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. Remove the bottom end cap.

The battery compartment cover is revealed.

2. Use a screwdriver to unscrew the battery com-

partment cover.

3. Insert batteries into gauge ensuring correct

polarity.

Note: When inserting batteries into the battery

tube, ensure the positive (+) battery terminal is

facing up towards the battery compartment

cover - see illustration. Incorrect insertion may

damage to the gauge.

4. Replace battery compartment cover.

5. Refering to “Care of the housing seals” on page 4, replace the bottom end cap.

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 24, 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.

Fitting a dual element transducer: Connect the

plugs of a dual element transducer to the sockets

on the top end cap of the gauge. When using

transducers manufactured by Elcometer NDT, the

orientation of the dual connectors is not critical;

either plug may be fitted to either socket.

Bottom End Cap

Battery

compartment

cover

Battery Cover

Top End Cap

Dual element transducer

sockets

Fitting a single element transducer: Connectthe

plug of a single element transducer to the socket on

the top end cap of the gauge as shown in the

illustration. A special dongle must be fitted to the

other socket as shown. Failure to fit the transducer

plug and dongle as shown will result in the gauge

not identifying the transducer correctly.

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.

3.4 SWITCHING ON/OFF

To switch on, press the control button on the top end cap.

To switch off, press and hold the control button. After

approximately 10 seconds, POWER OFF is displayed and the

gauge will then switch off. Once the gauge has switched off,

release the button.

The gauge will switch off automatically after 4 minutes of

inactivity. It should be noted that if the transducer face is not

wiped clean, there is a chance an echo can continuously be

detected. If that happens, the gauge will remain on until the

battery life is exhausted. In this instance, switch off the gauge manually as described above.

Top End Cap

Single element transducer

socket

Dongle socket

Wearface

Top End Cap

Control button

4 THE CONTROLS

Your gauge is operated by a single button on the top end cap. There are three methods of pressing

the button:

5 THE DISPLAY

Your gauge is equipped with two LCD

displays.

• One display shows the gauge settings

and memory location menu items.

• The other display shows measurement

readings.

5.1 GAUGE SETTINGS AND CONTROL

DISPLAY

The gauge settings and memory locations

are displayed as a set of top level menu

items, each of which has one or more

submenu items.

There are two menu structures used by the gauge. Choice of menu structure is determined

automatically by the gauge and depends upon the type of transducer fitted to the gauge; dual

element type or single element membrane type.

Method Action Notes

Press and Short

Hold Enters into, or

exits out of the

menu struc-

ture.

If entering into the menu structure, Enter is displayed,

followed by scrolling through the top level menu items.

If exiting the menu items, Exit is displayed, and then the

display shows either the current storage location (i.e. A1),

or MEMOFF if data storage has been disabled.

Once either instance has occurred, the button must be

released.

Press and

Release Selects a

menu item. To select a top level menu item, press and release the but-

ton. The submenu items will begin scrolling on the display.

To select a submenu item, press and release again.

Press and Long

Hold (10 sec-

onds)

Switches the

gauge on and

off.

See “Switching on/off” on page 6.

Measurement

Settings and

readings

memory

5.1.1 Menu Structure - Dual Element Type Transducer

5.1.2 Menu Structure - Single Element Membrane Type Transducer

In order to simplify operation of the gauge, some of the menu items listed above will not be visible.

Visibility depends upon the gauge settings:

•If

MEMOFF is selected (if you do not want to store measurements), the data logging section of

the gauge is disabled. As a result, MEMOFF moves to the first top level menu option (in place

of STORE) and DIRECT and CLEAR are disabled and not displayed.

• If a custom material type has not been uploaded into the gauge, CUSTOM is disabled and not

displayed in the MATL submenu.

The current settings of the gauge are displayed when it is switched on and then every 30 seconds.

This provides visual confirmation of the the settings at any time without having to scroll through the

menus to find the values of the settings. The gauge settings are displayed in the following order:

Gauge Model UG20DL

Battery Status LO, MED, or HI

Transducer Type Identified 1/2 5, 1/2 3.5, 1/2 2 S or 1/2 5 S

Measurement Mode P-E, PECT, E-E or E-E-E

Current Gain Setting VLOW, LOW, MED, HIGH or VHIGH

Material Type ALU, STL, STST, IRON, CIRO, PVC, PLST, PLUR, or CUSTOM

STORE DIRECT CLEAR ZERO GAIN MATL UNITS MODE UG20DL

A 1 NORTH LOC AUTO VLOW ALU IN P-E LT ON

SOUTH MANUAL LOW STL MM PECT LT OFF

EAST COATIN MED STST E-E LT AUTO

WEST HIGH IRON MEMOFF

VHIGH CIRO

PVC

PLST

PLUR

CUSTOM

STORE DIRECT CLEAR MATL UNITS MODE UG20DL

A 1 NORTH LOC ALU IN E-E-E LT ON

SOUTH STL MM LT OFF

EAST STST LT AUTO

WEST IRON MEMOFF

CIRO

PVC

PLST

PLUR

CUSTOM

5.1.3 How to Select an Item in a Submenu

1. Press and hold the control button until the top level menu items begin scrolling, then release the

button.

2. When the required top level menu item is displayed, immediately press and release the control

button.

The submenu items begin scrolling.

3. When the required submenu item is displayed, immediately press and release the control but-

ton.

The submenu item is selected and is identified by a comma mark in

the top left corner of the display - in the example shown MED is

selected.

4. Optional: Press and hold the control button to escape out of the menu

items at any time.

5.2 MEASUREMENTS DISPLAY

Note: The display will hold the last value measured, until a new measurement is made.

Note: When the battery voltage is low, the entire display will begin to flash. When this occurs, the

batteries should be replaced.

6 MEASUREMENT - MODES

Your gauge has two basic measurement modes, Pulse-Echo and Echo-Echo, plus other variations

on these modes for specific measurement tasks.

If an auto identified transducer is fitted to the gauge the appropriate mode will be automatically set.

To select measurement mode:

Use the control button to select MODE from the top level menu items and then select the mode

required from the submenu items.

Note: The availability of the modes depend upon the type of transducer fitted to the gauge.

Stability indicator

• One vertical bar - no

readings are being taken

• Less than 5 bars - read-

ing is unstable and may

be inaccurate

• More than 5 bars - read-

ing is stable

Units (IN, MM, IN/µs, M/s)

Measurement value/Text

,100 V



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