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Summary of Contents for Elcometer UG20DL
- Page 1 Model UG20DL Underwater Thickness Gauge Operating Instructions...
- Page 2 M43 6BU. United Kingdom: All other trademarks acknowledged. © Elcometer Limited 2011. All rights reserved. No part of this document may be reproduced, 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.
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Page 3: Table Of Contents
Contents About your Gauge ............3 Safe use of your Gauge . -
Page 4: About Your Gauge
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. -
Page 5: Safe Use Of Your Gauge
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. -
Page 6: Getting Started
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... - Page 7 Fitting a single element transducer: Connect the Single element transducer plug of a single element transducer to the socket on socket the top end cap of the gauge as shown in the illustration. A special dongle must be fitted to the Dongle socket other socket as shown.
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Page 8: The Controls
4 THE CONTROLS Your gauge is operated by a single button on the top end cap. There are three methods of pressing the button: Method Action Notes Enter Press and Short Enters into, or If entering into the menu structure, is displayed, Hold exits out of the... - Page 9 5.1.1 Menu Structure - Dual Element Type Transducer STORE DIRECT CLEAR ZERO GAIN MATL UNITS MODE UG20DL NORTH AUTO VLOW LT ON SOUTH MANUAL LOW PECT LT OFF EAST COATIN STST LT AUTO WEST HIGH IRON MEMOFF VHIGH CIRO PLST...
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Page 10: Measurement - Modes
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. - Page 11 This velocity is a very close approximation of the common coating velocities found in the field. If you want to change this value, connect the gauge to a PC and use Elcometer NDT Link software supplied with the gauge to upload a new value - see “Data Transfer Software” on page 19.
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Page 12: Setting Up The Gauge
, and a dual element probe has been connected to the gauge, either the transducer is faulty, or it is not an Elcometer NDT transducer supplied for this gauge type. If a single element membrane transducer has been connected, be sure the dongle is connected to the correct socket on the end cap of the gauge - “Fitting the transducer”... - Page 13 The gauge performs the automatic zero and is then ready to be calibrated for a given material type. 7.2.2 To conduct a manual probe zero (on block) 1. Remove all couplant from the face of the transducer and check that the wearface of the transducer is clean and free of any debris.
- Page 14 1. Remove all couplant from the face of the transducer and check that the wearface of the transducer is clean and free of any debris. ZERO Zero Disk 2. Use the control button to select from the top level menu items. The zero submenu items begin scrolling.
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Page 15: Measurement - Taking Readings
7.4.1 Selecting a Material and Sound-velocity Use the control button to select from the top level menu items and then select the material required from the submenu items. The gauge is now calibrated for the material selected and ready to take readings. 7.4.2 Editing the User Customisable Sound-velocity Value To calibrate your gauge for the material and coating you are measuring, use NDT Link to define the sound-velocity for the material and for the coating and to upload these values into the gauge - see... -
Page 16: Thrupaint™ Measurement Technique
Note: Occasionally, a small film of couplant will be drawn out between the transducer and the surface as the transducer is removed. When this happens, the gauge may perform a measurement through this couplant film, resulting in a measurement that is larger or smaller than it should be. This phenomenon can be seen when one thickness value is observed while the transducer is in place, and another value is observed after the transducer is removed. - Page 17 10.3 DISPLAY BACKLIGHTS AND LEDS Your gauge has three lighting options. Choose the option which best meets your requirements for visibility versus power consumption: UG20DL Use the control button to select from the top level menu items and then select the required...
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Page 18: Measurement - Recording Your Readings
11 MEASUREMENT - RECORDING YOUR READINGS Your gauge is equipped with a data logger - an essential feature for improving the efficiency of product inspection. With a data file open, all your readings values are saved into the file, therefore eliminating the need to manually record measurements during the inspection process. - Page 19 MEMOFF • If the display shows in the left most top level menu item, the data logger is disa- bled and must be enabled. UG20DL MEM ON 2. To enable the data logger, select and then select from the submenu items.
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Page 20: Data Transfer Software
12 DATA TRANSFER SOFTWARE Software is available which allows data and settings to be transferred between your gauge and a PC. Presently Elcometer supplies NDT Link software for this purpose. To set-up other types of communications software: 1. Start the communications software. -
Page 21: Storage
12.1.3 USB to Serial Converter Some newer laptop computers do not have standard serial ports. In this case it is possible to use a USB to Serial converter. If a serial to USB cable is needed, contact Elcometer (part number: TL-24032). -
Page 22: Maintenance
The gauge does not contain any user-serviceable components. In the unlikely event of a fault, the gauge should be returned to your local Elcometer NDT supplier or directly to Elcometer NDT. The warranty will be invalidated if the instrument has been opened. -
Page 23: Technical Specification
15 TECHNICAL SPECIFICATION Pulse-Echo P-E 0.63 mm to 500 mm (0.025” to 19.999”) Measuring Range Pulse-Echo Coat- Material: 0.63 mm to 500 mm (0.025” to 19.999”) ing PECT Coating: 0.01 mm to 2.54 mm (0.001” to 0.100”) Echo-Echo E-E 2.54 mm to 102 mm (0.100” to 4.0”) Range will vary +/- depending on the coating. -
Page 24: Warranty
Additionally, Elcometer NDT warrants transducers and accessories against such defects for a period of 90 days from receipt by the end user. If Elcometer NDT receives notice of such defects during the warranty period, Elcometer NDT will either, at its option, repair or replace products that prove to be defective. -
Page 25: Spares
Your gauge is complete with all the items required to get started and take measurements (transducers must be ordered separately). Over the life of the gauge replacement items may be required. The following replacement and optional items are available from your local Elcometer NDT supplier or directly from Elcometer NDT. - Page 26 When it is necessary to measure on surfaces that are exceedingly hot, special high-temperature transducers may be necessary. 18.5 SELECTING THE CORRECT TRANSDUCER Elcometer NDT has a complete range of transducers to meet your requirements, including: • A range of frequencies and sizes •...
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Page 27: Condition And Preparation Of Surfaces
3/16" crystals with a contact area of .250" For full details of the Elcometer NDT range of transducers contact your local Elcometer NDT supplier, or visit the Elcometer NDT website www.elcometerndt.com 19 CONDITION AND PREPARATION OF SURFACES The shape and roughness of the test surface are of paramount importance when carrying out ultrasonic thickness testing. -
Page 28: Application Notes
Your gauge is not suitable for measuring the thickness of laminated materials. If you need to measure this type of material, please consider using one of the other ultrasonic thickness gauges available from Elcometer NDT - please refer to www.elcometerndt.com for details. -
Page 29: Sound Velocities Of Common Materials
21 SOUND VELOCITIES OF COMMON MATERIALS Sound-velocity Sound-velocity Material Material (m/s) (in/µs) (m/s) (in/µs) Aluminium 6350 0.250 Paraffin 2210 0.087 Bismuth 2184 0.086 Platinum 3962 0.156 Brass 4394 0.173 Plexiglas 2692 0.106 Cadmium 2769 0.109 Polystyrene 2337 0.092 Cast Iron 4572 0.180 (Approx.) Porcelain... -
Page 30: The Menu Commands
(similar to a cell in a spreadsheet), or a sequential format location, depending on which file format was uploaded into the gauge. Note: A grid file structure is loaded into the gauge prior to despatch from the Elcometer NDT factory. MEMOFF STORE is selected, the... - Page 31 Top Level Submenu Description Menu Item Item ZERO AUTO Initiates an off-block electronic zero automatically, eliminating the need for a manual zero on a specified disk or block. When the gauge is switched on, it performs an auto zero during the boot sequence. However, another auto zero may be needed to account for changes in temperature, or an incorrect zero due to couplant on the end of the transducer during the zeroing process.
- Page 32 Select to measure coated materials. Measures the base material only without having to remove the coating. E-E-E Special multiple echo mode used only with Elcometer NDT single element membrane transducers. UG20DL LT ON Select to switch on all the LEDs and display backlights.