Elcometer 112 Manuale utente

Elcometer

112 • 115 • 154 • 3230 • 3236 • 3238

Wet Film Combs and Wheel

Operating Instructions

is a registered trademark of Elcometer Limited.

All other trademarks acknowledged.

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

Doc.No. TMA-0365 Issue 08

Text with Cover No: 19811

CONTENTS

Section Page

1 About this gauge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Using a Wet Film Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Using a Wet Film Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Cleaning after a test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7 Elcometer Wet Film Combs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

8 Elcometer Wet Film Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

9 Wet Film Wheel accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

10 Related equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Elcometer 112 Elcometer 115 Elcometer 154 Elcometer 3230 Elcometer 3236 Elcometer 3238

MICRONS

WET FILM

THICKNESS

GAUGE

Thank you for your purchase of this Elcometer Wet Film Comb/Wheel. Welcome to Elcometer.

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.

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

This gauge is a simple but effective instrument used to determine the thickness of wet paints and similar

coatings immediately after application. The expected dry film thickness can then be calculated.

1.1 WET FILM COMBS

The edge of the comb is placed into the wet film and then removed. The thickness of the wet film is

determined by examining the paint left on the teeth of the comb and the thickness scale marked on the front

face of the comb.

Elcometer 112 & Elcometer 3236

Precision formed in stainless steel to be long-lasting and reusable, these hexagonal wet film combs are

supplied in a range of thicknesses up to a maximum of 3000 µm (120 mils). This high upper value allows

measurement of thick coatings which are difficult totest byother methods. An aluminiumversion is available

(Elcometer 112AL); this model is not as accurate as the high precision versions but it does provide a low

cost alternative for measurement of wet film thickness.

Elcometer 115

These precision film combs, formed in stainless steel to be long-lasting and reusable, are supplied in Metric

or Imperial values. Four separate ranges of thicknesses are available up to a maximum thickness of

1250 µm (50 mils). Each comb has 10 measurements (or teeth) per comb.

Elcometer 154

Made from ABS plastic, the Elcometer 154 Wet Film Combs are designed to be used only once and kept

as a record of wet film thickness measurement for your ISO or customer requirements. Both Metric and

Imperial values are on the same comb, 50 to 800 µm on one side, 2 to 32 mils on the other.

Elcometer 3238

Similar to the Elcometer 115, the Elcometer 3238 provides the user with more measurement points (teeth).

These rectangular wet film combs are available in 3 ranges up to amaximumthickness of 1200 µm (50 mils)

- supplied either separately or in a set of 3.

1.2 WET FILM WHEEL

Elcometer 3230

Formerly known as the Elcometer 120, the Elcometer 3230 wet film wheel consists of a central eccentric

wheel and two outer concentric wheels. The diameter of the outer wheels is greater than that of the central

wheel. The gauge is rolled across the wet paint film and at some point the central wheel will touch the paint.

A scale on the outside of the wheel indicates the paint film thickness at this point. Various measurement

ranges from 0 to 25 µm to 0 to 1000 µm (0 to 1 mil - 0 to 40 mils) are available.

Coil Coating Wet Film Wheel; similar to the Elcometer 3230 wet film wheels, but the outer wheels are

knurled to allow measurements to be taken on slippery coatings or on fast moving substrates.

1.3 STANDARDS

Your Elcometer Wet Film Comb/Wheel can be used in accordance with the following National and

International Standards (depending upon model).

1.4 WHAT THE BOX CONTAINS (EXCEPT ELCOMETER 154 & 112AL)

• Elcometer Wet Film Comb/Wheel

• Storage case

• Operating instructions

Standard Elcometer Models

112 115 154 3230 3236 3238

AS/NZS 1580.107.3  -

ASTM D 1212-A - - - --

ASTM D 4414-A  --



ISO 2808-1A supersedes BS 3900-C5-7B, ISO 2808-7B  -

ISO 2808-1B supersedes BS 3900-C5-7A - - - --

NF T30-125 

US Navy NSI 009-32  --



US Navy PPI 63101-000  --



2 USING A WET FILM COMB

Before you start, ensure your Elcometer Wet Film Comb is clean

and undamaged.

1. Hold the comb perpendicular to the wet film and press the

edge of the comb into the film until it is stable on the

substrate.

2. Remove the comb from the wet film.

3. Examine the teeth of the comb and locate the last tooth

which is wetted. Read the thickness value of this tooth.

The wet film thickness is between this value and the

thickness value of the next dry tooth.

In the example shown, the wet film thickness lies between

2400 µm and 2600 µm.

To use the comb on pipes, ensure it is placed parallel to the

longitudinal axis of the pipe.

On rough surfaces, measurements will be made from the

surface peaks and therefore will represent the minimum

wet film thickness.

650

700

750

800

850

900

1000

1100

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

100

125

150

175

200

225

250

275

300

350

400

450

500

550

600

substrate

wet film

3 USING A WET FILM WHEEL

Take care to avoid damaging your Elcometer Wet Film Wheel. Damage to the circumference of the

wheel will affect the readings and the gauge will have to be replaced.

Before you start, ensure your Elcometer Wet Film Wheel is clean and undamaged. Read and understand

the test procedure described in the applicable test standard.

The procedure depends upon which standard you are testing to. Consult your test standard for further

details.

1. Using a finger and thumb, hold the wheel by its central

spindle with the maximum reading on the scale nearest to

the paint film.

2. Place the wheel into the wet film ensuring that the wheel

is perpendicular to the film.

3. Roll the wheel across the film through 360°/180°

(depending upon standard) and then remove from the

surface.

4. Locate the first point on the central wheel where the paint

has adhered. Read the wet film thickness from the scale

on the side of the wheel at this point.

Repeat the procedure at least twice in different places to obtain representative results.

To use the wheel on pipes, roll the wheel at right angles to the longitudinal axis of the pipe.

On rough surfaces, measurements will be made from the surface peaks and therefore will represent the

minimum wet film thickness.

max

Wet film

Substrate

4 CLEANING AFTER A TEST

Clean your gauge after a test (except Elcometer 154 Plastic Wet Film Comb).

Do not use very aggressive solvents or wire brushes, metal scrapers, metal files or other metallic tools

for cleaning.

Clean the gauge using a suitable solvent only.

After cleaning, ensure that all materials are removed and that the gauge is dry.

Use the case provided to store the gauge when it is not being used.

5 MAINTENANCE

Elcometer products are designed to give many years reliable service under normal operating and storage

conditions.

Regular calibration checks over the life of the gauge are a requirement of quality management procedures

e.g. ISO 9000 and other standards. For checks and certification contact Elcometer or your local supplier.

6 TECHNICAL SPECIFICATION

Material: Stainless steel, aluminium or plastic (depending upon model)

Accuracy - Model 112, 115, 3236, 3238: ± 5% or 2.5µm whichever is the greater

Accuracy - Model 3230: ± 5% of full scale dimension

Accuracy - Model 112AL, 154: Nominal Values

Depending upon model, your Elcometer Wet Film Comb/Wheel may be 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.

7 ELCOMETER WET FILM COMBS

Metric (microns) Imperial (mils)

Model Scale (µm) Part Number Model Scale (mils) Part Number

Elcometer 112: 25-3000 B112----1B Elcometer 112: 1-120 B112----2B

Elcometer 112/AL:a

a. These models have metric and imperial units - metric on one side, imperial on the other.

25-3000 B112AL12473-3 Elcometer 112/AL:a1-118 B112AL12473-3

Elcometer 115: 20-325 B11529455M Elcometer 115/1: 1-13 B11529451E

Elcometer 115: 50-450 B11529456M Elcometer 115/2: 2-18 B11529452E

Elcometer 115: 50-750 B11529457M Elcometer 115/3: 2-30 B11529453E

Elcometer 115: 125-1250 B11529458M Elcometer 115/4: 5-50 B11529454E

Elcometer 115: Metric Comb Set B1152959WM Elcometer 115: Imperial Comb Set B1152959WE

Elcometer 154:a50-800 B154----1 Elcometer 154:a2-32 B154----1

Elcometer 3236: 20-370 K0003236M201 Elcometer 3236: 0.5-15 K0US3236M203

Elcometer 3236: 25-2000 K0003236M202 Elcometer 3236: 1-80 K0US3236M204

Elcometer 3238: 5-120 K0003238M201 Elcometer 3238: 0.5-6 K0US3238M201

Elcometer 3238: 25-600 K0003238M202 Elcometer 3238: 1-24 K0US3238M202

Elcometer 3238: 50-1200 K0003238M203 Elcometer 3238: 2-48 K0US3238M203

Elcometer 3238: Metric Comb Set K0003238M204 Elcometer 3238: Imperial Comb Set K0US3238M204

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