Elcometer 3092
Sclerometer
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Hardness Tester
Operating Instructions
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is a registered trademark of Elcometer Limited.
All other trademarks acknowledged.
© Copyright Elcometer Limited. 2014.
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.
A copy of this Instruction Manual is available for download on our Website via www.elcometer.com
TMA-0598 Issue 1 - Text with cover 25226
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CONTENTS
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Section Page
1 About this gauge ........................................................................................................................................................3
2 Setting the tip force .................................................................................................................................................. 5
3 Testing a surface ....................................................................................................................................................... 9
4 Maintenance ............................................................................................................................................................. 10
5 Technical specification ........................................................................................................................................10
6 Spares...........................................................................................................................................................................11
7 Related equipment................................................................................................................................................. 12
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Thank you for your purchase of this Elcometer 3092 Sclerometer Hardness Tester. Welcome to
Elcometer.
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Elcometer are world leaders in the design, manufacture and supply of inspection equipment for
coatings and concrete. Our products cover all aspects of coating inspection, from development
through application to post application inspection.
This Elcometer 3092 Sclerometer Hardness Tester is a world beating product. With the purchase
of this product you now have access to the worldwide service and support network of Elcometer.
For more information visit our website at www.elcometer.com
1 ABOUT THIS GAUGE
The Elcometer 3092 Sclerometer Hardness Tester is a simple but effective gauge for determining
the hardness of a large variety of coatings and surfaces.
The body of the gauge contains a spring loaded tool fitted with a tungsten carbide tip. The tip is
pressed against the surface being tested and the gauge is moved a short distance in an attempt
to scratch the coating. The coating is inspected and the spring loading is increased gradually until
the tip leaves a mark or destroys the coating.
The maximum load on the tip is determined by the stiffness of the spring fitted to the gauge. Three
springs of varying stiffness are supplied as standard with the gauge.
The spring loading is adjusted within the range of each spring by sliding a lockable collar along
the body of the gauge.
1.1 STANDARDS
Your Elcometer 3092 Sclerometer Hardness Tester can be used in accordance with the following
National and International Standard : Round tips AS 3894.4, Diamond tips EN 438-2 & ISO 4586-
2.
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1.2 FEATURES
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Very easy to use
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Portable, pocket-sized design
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Ideal for testing coatings on the production line
1.3 WHAT THE BOX CONTAINS
Ÿ Elcometer 3092 Sclerometer Hardness Tester
Ÿ Tool with 0.75 mm (0.03") diameter tungsten
carbide tip
Ÿ 3 springs (grey, red and blue)
Ÿ Carry case
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Ÿ Operating instructions
Your Elcometer 3092 Sclerometer Hardness Tester is packed in a cardboard and foam package.
Please ensure that this packaging is disposed of in an environmentally sensitive manner. Consult
your local Environmental Authority for further guidance.
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To maximise the benefits of your new Elcometer 3092 Sclerometer Hardness Tester please take
some time to read these Operating Instructions. Do not hesitate to contact Elcometer or your
Elcometer supplier if you have any questions.
2 SETTING THE TIP FORCE
The force applied by the tip on the surface is determined by the colour of the spring and the position
of the sliding collar.
2.1 SELECTING A SPRING
Four types of spring are available. The stiffness of each type is determined by its colour:
Spring colour Force applied by tip
Grey: 0 N to 3 N
Red: 0 N to 10 N
Blue: 0 N to 20 N
Green : 0 N to 30 N
a. The green spring is not supplied as standard with the gauge. To order a green spring see “Spares” on page 11.
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2.2 FITTING AND ADJUSTING A SPRING
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1. Loosen locking screw to release spring tension.
2. Unscrew and remove the black knurled end cap.
3. Slide the collar off the Sclerometer.
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2.2 FITTING AND ADJUSTING SPRING (continued)
4. Remove the spring.
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5. Select the appropriate spring and insert into
the Sclerometer.
6. Refit the collar.
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2.2 FITTING AND ADJUSTING SPRING (continued)
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7. Refit the end cap
8. Find the scale on the Sclerometer which matches
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the colour of the spring and adjust the tip force by
sliding the collar to the required setting on the scale.
9. Tighten the locking screw.
The gauge is now set and ready for testing.
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3 TESTING A SURFACE
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1. Place the gauge perpendicular to the surface being
tested and apply sufficient downwards force
to compress the spring by approximately 2 mm.
Do not allow the bottom of the gauge to touch the
surface being tested.
2. Move the gauge to produce a linear scratch
approximately 10 mm long.
3. Examine the surface for marks left by the tip of
the tool.
Illuminating the surface from behind will help to
reveal surface marking.
If the surface is unmarked, increase the spring
loading and repeat steps 1 to 3 until surface
marking is detected.
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4 MAINTENANCE
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The Elcometer 3092 Sclerometer Hardness Tester is designed to give many years reliable service
under normal operating and storage conditions. Special maintenance will not normally be required
under these conditions.
Always check the tip before use for damage or contamination. Clean or replace the tip if necessary.
Replacement tips and springs are available from Elcometer or your local supplier - see “ Spares” on
page 11.
Details of Elcometer offices around the world are detailed on the Elcometer website,
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5 TECHNICAL SPECIFICATION
Material Body: Anodised aluminium
Springs: Stainless steel
Tips: Tungsten carbide or diamond
Dimensions: 186 mm x 29 mm x 17 mm (7.3" x 1.1" x 0.7")
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Weight: 370 g (13 oz)
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6 SPARES
Your Elcometer 3092 Sclerometer Hardness Tester is complete with all the items required to start
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taking measurements. Over the life of the gauge, the following spare parts and optional accessories
may be required:
6.1 SPRINGS
Spring colour Force Part number
Grey 0 N to 3 N (0 lbf to 0.67 lbf) KT003092P004
Red 0 N to 10 N (0 lbf to 2.2 lbf) KT003092P005
Blue 0 N to 20 N (0 lbf to 4.5 lbf) KT003092P006
Green 0 N to 30 N (0 lbf to 6.7 lbf) KT003092P007
6.2 TOOLS
Tip Tip material Part number
0.5 mm (0.02") Diameter Tungsten Carbide KT003092P001
0.75 mm (0.03") Diameter Tungsten Carbide KT003092P002
1.0 mm (0.04") Diameter Tungsten Carbide KT003092P003
90° angle Diamond (As specified in EN 438-2, ISO 4586-2) KT003092P008
b. 0.09mm (0.0035”) radius
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7 RELATED EQUIPMENT
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In addition to the Elcometer 3092 Sclerometer Hardness Tester, Elcometer produces a wide range of
other coating testing equipment. Users of the Elcometer 3092 Sclerometer Hardness Tester may also
benefit from the following Elcometer product ranges:
Ÿ Elasticity and Resistance Deformation Testers
Ÿ Paint Inspection Gauges
Ÿ Appearance Testers
Ÿ Washability, Brushability and Abrasion Testers
For further information contact Elcometer, your local supplier or visit www.elcometer.com
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