Elcometer Zahn 2210 Manuale utente

English

Elcometer

2210 • 2215 • 2310

2434 • 2435 • 2436 • 2437

Viscosity Dip Cup

Operating Instructions

2210_TMA_0317_00_05.fm Page -1 Thursday, July 15, 2010 9:38 AM

English

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-0317 Issue 05

Text with Cover No: 19333

2210_TMA_0317_00_05.fm Page 0 Thursday, July 15, 2010 9:38 AM

CONTENTS

Section Page

1 About your viscosity cup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Taking a reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Technical specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7 Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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

9 Viscosity standard oils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

10 Elcometer viscosity cups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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Thank you for your purchase of this Elcometer Viscosity Dip Cup. 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.

This Elcometer Viscosity Dip Cup is a world beating product. With the purchase of this Viscosity Dip Cup

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 YOUR VISCOSITY DIP CUP

Elcometer Viscosity Dip Cups are easy-to-use gauges for rapid measurement of viscosity of liquids.

The cup is held by its handle and is dipped into the liquid to be measured. The cup is removed from the

liquid and the time taken for the liquid to drain through an orifice in the bottom of the cup is measured.

The measured kinematic viscosity is generally expressed in seconds (s) flow time, which can be converted

to Centistokes (cSt). A wide range of cups with different orifices is available for measurements between

2 cSt and 1840 cSt.

1.1 THESE INSTRUCTIONS

These instructions describe the operation of the following Elcometer Viscosity Dip Cups:

Elcometer 2210: Zahn

Elcometer 2215: Lory LCH

Elcometer 2310: Shell

Elcometer 2434/5/6/7: Frikmar

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1.2 STANDARDS

The Elcometer Viscosity Dip Cups can be used in accordance with a wide range of National and

International Standards.

For full details of which standards are appropriate see “Elcometer viscosity dip cups” on page 10.

1.3 WHAT THE BOX CONTAINS

• Elcometer Viscosity Dip Cup with handle

• Operating instructions

• Storage case

The Elcometer Viscosity Dip Cup 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.

1.4 CAUTION

Take care to avoid damaging your viscosity dip cup. Damage to the orifice, scratches on the internal

surface or deformation of the cup will affect the readings and the gauge may have to be replaced.

2 TAKING A READING

2.1 BEFORE YOU START

• Select a cup which gives a flow time of between 30 seconds and 100 seconds.

• Ensure the handle, the cup and the orifice are clean and free of debris, etc.

• The liquid being tested must be homogeneous and must not contain any bubbles.

• Measure and record the temperature of the liquid.

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2.2 PROCEDURE

1. Immerse the cup completely into the liquid and twist several times to

dislodge any bubbles which may be clinging to the internal surface of

the cup (Figure 1, A).

2. Stir the liquid gently to ensure uniform temperature and density.

3. Leave the cup in the liquid for 1 to 5 minutes: For a Zahn cup (which

has a low mass) 1 minute will be sufficient; for cups with higher mass,

5 minutes will be better.

4. Lift the cup vertically out of the liquid (Figure 1, B) and start the

stopwatch the moment the top of the cup breaks the surface of the

liquid.

5. Watch the flow of liquid from the orifice and stop the stopwatch the

moment the flow breaks.

When using a Lory LCH Viscosity Dip Cup (Elcometer 2215),

observe the surface of the liquid and stop the stopwatch the moment the top of the

spindle appears.

Figure 1. Using the

Viscosity Dip Cup

Lory LCH

Cup

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2.3 AFTER THE TEST

Clean the gauge and all equipment.

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

3 CONVERTING TO VISCOSITY

The measured kinematic viscosity is expressed generally in seconds (s) flow time, which can be converted

to Centistokes (cSt).

To convert from flow time (s) to kinematic viscosity (cSt), use the Elcometer 2400 Viscosity

Disc - see “Related equipment” on page 12.

Alternatively, use the following formula:

V = K(t - c)

where

V = kinematic viscosity in cSt (mm²/s)

t = flow time in seconds

Do not use wire brushes, metal scrapers,

metal files or other metallic tools for

cleaning.

Clean the gauge and all equipment using a

suitable solvent only.

Viscosity

Disc

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K and c are constants given in the following table:

Please note:

• The formula treats the cups as linear, which they are not.

• The formula is effective for flow times between 20 seconds and 80 secondsa.

Cup K c Cup K c

Zahn Cup 1a

a. The constants are given in Patton, T. C., Paint Flow and Pigment Dispersion, second edition, John Wiley & Sons,

New York, 1979, page 82.

1.1 29 Shell Cup 1 0.226 13

Zahn Cup 2a3.5 14 Shell Cup 2 0.576 5

Zahn Cup 3a11.7 7.5 Shell Cup 2½ 0.925 3

Zahn Cup 4a14.8 5 Shell Cup 3 1.51 2

Zahn Cup 5a23 0 Shell Cup 3½ 2.17 1.5

Shell Cup 4 3.45 1

Shell Cup 5 6.5 1

Shell Cup 6 16.2 0.5

a. Zahn Cup 1 - formula is effective between 35 seconds and 80 seconds.

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4 STORAGE

Always store the gauge in its case when it is not being used.

5 MAINTENANCE

Elcometer Viscosity Dip Cups 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.

To check for wear, use Elcometer 2410 Viscosity Standard Oilsband measure the drain time. If wear is

detected, contact Elcometer or your local Elcometer supplier.

Details of Elcometer offices around the world are given on the outside cover of these Operating Instructions.

Alternatively visit the Elcometer website, www.elcometer.com

b. See “Elcometer 2434/5/6/7 Frikmar: Anodised Aluminium” on page 8 for ordering information.

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6 ACCESSORIES

Calibration certificate

Elcometer Viscosity Dip Cups are supplied with a Batch Calibration Certificatecas standard. Individual

Calibration Certificates are availablecbut must be requested at the time of order as they can not be issued

retrospectively.

7 TECHNICAL SPECIFICATION

Elcometer 2210 Zahn, 2215 Lory LCH and 2310 Shell: Stainless steel

Elcometer 2434/5/6/7 Frikmar: Anodised Aluminium

c. Certificates are not available for the Elcometer 2215.

Accuracy 2210 Zahn

2310 Shell 2434 DIN4

2437 ISO 2435 ASTM

15% 3% 10%

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