Elcometer 138 User manual

User Guide

Elcometer 138

Bresle Kit & Patches

www.elcometer.com

Section

Page

Overview

en-2

Box Contents

en-2

Test Procedure: ISO 8502-6 / ISO 8502-9

en-3

Test Procedure: US Navy PPI 63101-000

en-5

Using the Conductivity Meter

en-7

Care & Maintenance

en-12

Technical Specification

en-13

Spares & Accessories

en-14

Legal Notices & Regulatory Information

en-15

www.elcometer.com

For the avoidance of doubt, please refer to the original English language version.

Kit Dimensions: 346 x 292 x 84mm (13.6 x 11.5 x 3.3")

Kit Weight: 1.1kg (2lb 7oz)

Material Safety Data Sheets for the Elcometer 138 Standard Calibration Solutions are available to download via

our website:

http://www.elcometer.com/images/stories/MSDS/elcometer_138_b771_calibration_solution.pdf

http://www.elcometer.com/images/stories/MSDS/Calibration_Solution_T13827352-1_to_T13827352-3_EU.pdf

http://www.elcometer.com/images/stories/MSDS/Calibration_Solution_T13827352-1_to_T13827352-3_Americas.pdf

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.

CONTENTS

en-1

The Elcometer 138 Bresle Kit and Patches provides all the materials

and equipment required to determine the surface chloride

contamination level.

Chloride salts are extracted from the surface using the Bresle Patch

method and the chloride content of the test solution is measured using

a conductivity meter.

These instructions incorporate two test methods:

 ISO 8502-6 / ISO8502-9

 US NAVY PPI 63101-000 (Rev 27)

The Elcometer 138 Bresle Kit and Patches can also be used in

accordance with ISO 8502-11; AS 3894.6-A and SSPC Guide 15.

For IMO PSPC , the surface salts should be measured and recorded.

The Elcometer 138 Bresle Kit and Patches can be used for this.

1 OVERVIEW

www.elcometer.com en-2

2 BOX CONTENTS



Elcometer 135B Bresle Patch, Pack of 25 or;

Elcometer 135C Bresle Test Patch, Pack of 25

(depending on kit ordered)



Elcometer 138 Conductivity Meter & Sensor



Standard Calibration Solution 1.41 mS/cm; 14ml (0.47 fl oz)



Moistening Solution; 14ml (0.47 fl oz)



Bottle of Pure Distilled Water; 250ml (8.5 fl oz)



Syringes, 5ml (0.17 fl oz); x3



Needles (Blunt); x3



Plastic Beaker; 30ml (1 fl oz)



CR2032 Lithium Batteries; x2



Transit Case



User Guide

a International Maritime Organisation, Performance Standard for Protective Coatings.

Note: The Elcometer 138 Conductivity Meter included in the test kit measures the

conductivity of aqueous solutions. The meter is NOT designed to measure

solids, organic solvents, surfactant, oil, adhesive, alcohol, strong acids

(pH: 0 to 2) or strong alkalis (pH: 12 to 14). The life of the sensor will be

extremely short if these substances are measured.

3.1 BEFORE YOU START

1 Calibrate the conductivity meter, see Section .5 on page . 5 en-10

2 As the test is extremely sensitive, clean latex or nitrile gloves

should be worn during the extraction of soluble salts to prevent

contamination of the surface.

3.2 TEST PROCEDURE

1 Remove the printed protective backing

and foam centre from the Bresle

patch.

2 Apply the patch to the surface

pressing firmly around the perimeter of

the patch to ensure a complete seal. If

using the Elcometer 135C Bresle Test

Patch, remove the clear protective film

cover using the orange tab.

3 Fill a syringe with 3ml of pure water.

4 Insert the syringe into the patch

through the spongy foam perimeter at

an angle of approximately 30° to the

test surface so that it passes through

the foam into the compartment formed

by the elastomer film and the test

surface. If the patch is positioned in a

difficult position bend the needle as

required.

5 Inject the pure water into the patch.

Do not remove the needle.

 If necessary, any air can be evacuated

into the syringe and allowed to stay above

the water in the syringe. Take care not to

re-insert the air during steps 6 and 7.

6 During a suitable period of time ,

without removing the needle, suck and

re-inject the solution at least four

times .

3 TEST PROCEDURE: ISO 8502-6 / ISO 8502-9

www.elcometer.com

en-3

b On un-pitted blast-cleaned areas, a period of 10 minutes has been found to be satisfactory, though this

time should be agreed by the interested parties.

c During steps 6 and 7, it is essential that no solution is lost. If any solution is lost, the test shall be rejected.

3 TEST PROCEDURE: ISO 8502-6 / ISO 8502-9 (continued)

7 At the end of the period, extract as

much solution as possible and remove

the syringe from the patch .

8 Measure the conductivity of the

solution using the Elcometer 138

Conductivity Meter, see Section 5.6 on

page en-11. Inject the sample directly

into the sensor cell. Rinse the sensor

cell several times with the solution to

be measured before taking the

reading.

3.3 AFTER TEST

1 Record the temperature of the solution.

2 Remove the patch from the surface and clean the surface. If

required, any adhesive residue from the patch left on the test

surface can be removed by wiping with a cloth moistened with a

suitable solvent. Ensure that the solvent will not damage the

surface before use.

3 Rinse all components of the test kit, other than the patch, in

fresh, pure water. The components can then be used again.

3.4 TO CALCULATE THE SURFACE DENSITY OF SALTS

Multiply the reading by one of the following factors:

www.elcometer.com en-4

Surface Density of Salts: Factors

ISO Salt Mix

IMO PSPC equivalent NaCI

Reading

mg/m

µg/cm2

mg/m

µg/cm2

µS/cm

x1.2

x0.12

x1.1

x0.11

c During steps 6 and 7, it is essential that no solution is lost. If any solution is lost, the test shall be rejected.

d 2

Based on an area of 12.5cm and a volume of 3ml.

Note: ISO 8502-9 allows for the measurement of the pure water before testing and

then the subtraction of that value from that obtained in section 3.2 step 8 above.

4.1 BEFORE YOU START

1 Calibrate the conductivity meter, see Section on page .5.5 en-10

2 As the test is extremely sensitive, clean latex or nitrile gloves

should be worn during the extraction of soluble salts to prevent

contamination of the surface.

4.2 TEST PROCEDURE

Measurements are to be made randomly over the prepared surface.

2 2

Five measurements should be taken every 90m (1000ft ). Five

2 2

measurements should be taken for areas less than 90m (1000ft ).

1 Remove the printed protective

backing and foam centre from the

Bresle patch.

2 Apply the patch to the surface

pressing firmly around the perimeter

of the patch to ensure a complete

seal. If using the Elcometer 135C

Bresle Test Patch, remove the clear

protective film cover using the

orange tab.

3 Fill a syringe with 3ml of pure water.

4 Insert the syringe into the patch

through the spongy foam perimeter

and inject 1.5ml of pure water into

the patch. Do not remove the

syringe.

5 With the syringe still in the patch,

reposition the needle and evacuate

any air in the patch.

6 Once the air has been removed,

inject the remaining 1.5ml of pure

water.

7 Remove the syringe from the patch.

www.elcometer.com

en-5

4 TEST PROCEDURE: US NAVY PPI 63101-000

www.elcometer.com en-6

8 Rub the surface of the patch gently for

10 to 15 seconds to allow the water to

dissolve surface contaminants.

9 Insert the syringe into the patch

through the spongy foam perimeter

and extract the solution from the

patch.

10 Measure the conductivity of the

solution using the Elcometer 138

Conductivity Meter, see Section on 5.6

page . Inject the sample directly en-11

into the sensor cell. Rinse the sensor

cell several times with the solution to

be measured before taking the

reading.

4.3 AFTER TEST

1 Record the temperature of the solution.

2 Remove the patch from the surface and clean the surface. If

required, any adhesive residue from the patch left on the test

surface can be removed by wiping with a cloth moistened with a

suitable solvent. Ensure that the solvent will not damage the

surface before use.

3 Rinse all components of the test kit, other than the patch, in fresh,

pure water. The components can then be used again.

4.4 PASS / FAIL CRITERIA

For immersed applications, conductivity due to soluble salts (total

ionic) shall not exceed 30µS/cm.

For non-immersed applications, conductivity due to soluble salts shall

not exceed 70µS/cm.

Note: The charts produced by the US Navy for the calculation of chloride levels are not

required for this test method. Please contact Elcometer or your local Elcometer

supplier if you require a copy of these charts.

4 (continued)TEST PROCEDURE: US NAVY PPI 63101-000

5.1 CAUTION

 Do not drop the conductivity meter.

 Never apply undue force when opening the meter (to change the

batteries or sensor).

 Do not exert undue force on the sensor.

 Do not allow utensils (tweezers, pipette, etc) to touch sensor cell.

 Do not measure samples hotter than 40°C (105°F)

 Do not allow contact with solvents.

 Do not subject the conductivity meter to high temperature or

humidity.

 Although the product is waterproof, avoid immersing it

completely. If the meter is accidentally dropped in water, take it

out and remove the moisture.

5.2 FITTING THE BATTERIES

The Elcometer 138 Conductivity Meter uses dry cell batteries only.

Two CR2032 lithium batteries are supplied in the kit.

To fit or replace the batteries:

1 Place batteries in battery clips ensuring

correct polarity.

2 To reassemble the meter, slide the sensor

onto the body of the meter and push the

body and sensor together gently until

sensor retaining clip engages.

When the battery voltage becomes low, the low

battery warning indicator will flash. Replace

both batteries immediately.

Note: Lithium batteries must be disposed of carefully to

avoid environmental contamination. Please consult

your local Environmental Authority for information on

disposal in your region. Do not dispose of any

batteries in fire.

www.elcometer.com

en-7

5 USING THE CONDUCTIVITY METER

Battery

Clip

en-8

5 USING THE CONDUCTIVITY METER (continued)

5.3 CONTROLS AND DISPLAY

The Elcometer 138 Conductivity Meter is operated using 3 buttons and

displays readings and other information on the LCD screen.

910 11 12 13

GUIDE TO CONDUCTIVITY METER & DISPLAY INDICATORS

Measurement Cell

Place a liquid sample in this cell to measure it

with the electrode located on the bottom of

the cell.

Protection Cover

Protects the measurement cell and at sensor

in storage.

Lithium Batteries

CR2032 x 2

MEAS Button

Switches the calibration mode to the

measurement mode, activates / deactivates

the reading locking function in the

measurement mode and starts / applies

settings in the special setting mode.

ON/OFF Button

Turns the meter On / Off.

Strap Eyelet

A strap can be attached here.

CAL Button

Starts calibration and switches items /

settings in the special setting mode.

Waterproof Gasket

Makes the meter waterproof.

www.elcometer.com

en-9

5 USING THE CONDUCTIVITY METER (continued)

GUIDE TO CONDUCTIVITY METER & DISPLAY INDICATORS

MEAS Icon

Flashes until the measured value is stabilised

and illuminates steadily when the measured

value is settled, while the reading locking

function is active.

CAL Icon

Flashes during calibration and illuminates

steadily when calibration is nished.

Battery Alarm Icon

Illuminates when the batteries are low and

need to be replaced.

Temperature Alarm Icon

Flashes when the measuring environment

temperature does not meet the specied

operating temperature of 5°C to 40°C

(41°F to 105°F).

Stability Icon

Illuminates when measured value is

stabilised.

Measurement Unit Display

A unit symbol illuminates corresponding to the

value displayed on the measured value

display (15). The default setting is ‘S/cm’.

Measured Value Display

Displays a measured, set and status value.

5.4 SETTING THE MEASUREMENT UNITS

1 Press and hold the MEAS button for

over 3 seconds in the measurement

mode to enter the special setting mode.

All items appear on the LCD then the

display changes as shown.

2 Press the MEAS button for 0.5 seconds.

The current setting is displayed.

3 Press the CAL button for 0.5 seconds to

change the setting. Pressing the CAL

button continuously changes the

settings sequentially (see diagram on

page en-10).

4 Press the MEAS button to apply the

setting. The instrument returns to

measurement mode.

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