Elcometer 138 User manual

User Guide

Elcometer 138

Basic 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-4

Using the Conductivity Meter

en-6

Care & Maintenance

en-17

Warranty Statement

en-18

Technical Specification

en-18

Spares & Accessories

en-18

Legal Notices & Regulatory Information

en-19

www.elcometer.com

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

Kit Dimensions: 307 x 260 x 74mm (12.1 x 10.2 x 2.9")

Kit Weight: 952g (2lb 1oz)

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

our website:

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 Basic 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 Basic 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 Basic Bresle Kit and Patches can be used for this.

1 OVERVIEW

www.elcometer.com en-2

2 BOX CONTENTS



Elcometer 135C Bresle Test Patch, Pack of 25



Elcometer 138E Conductivity Meter



Standard 1413 µS/cm (1.413 mS/cm) Calibration Solution,

1 x 20ml (0.74 fl oz) Single Use Pouch



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)



LR44 Alkaline Batteries; x4



Transit Case



User Guide

a International Maritime Organisation, Performance Standard for Protective Coatings.

Note: The Elcometer 138E 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 .6 and 5.7 on s 5

pages and en-14.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

and 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

138E Conductivity Meter, see Section 5.9 on page en-16. 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 TEST PROCEDURE: US NAVY PPI 63101-000

4.1 BEFORE YOU START

1 Calibrate the conductivity meter, see Sections 5.6 and 5.7 on

pages en-10 and en-14.

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 and 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.

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.

www.elcometer.com

en-5

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

www.elcometer.com en-6

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 138E Conductivity

Meter, see Section 5.9 on page en-16.

Inject the sample directly 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 USING THE CONDUCTIVITY METER

5.1 OVERVIEW

1 Battery Compartment Lid

2 LCD Display

3 Controls (see Section 5.3 on page en-7)

4 Sensor Cell / Electrode

5.2 FITTING THE BATTERIES

The Elcometer 138E Conductivity Meter uses dry cell batteries only.

Four 1.5V LR44 alkaline batteries are supplied in the kit.

To fit the batteries:

1 Unscrew the battery compartment lid.

2 Place batteries in battery compartment

ensuring correct polarity (Figure 1).

Remove old batteries by pulling the plastic ribbon

(Figure 1).

The battery condition is indicated by a symbol on

the display:

www.elcometer.com

en-7

5 USING THE CONDUCTIVITY METER (continued)

+Plastic

Ribbon

3 bars indicates the battery is full (100%).

2 bars indicates 50% of the battery life is left.

1 bar indicates 25% of the battery life is left.

Blinking battery casing indicates the need to replace

batteries with new ones.

Note: 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.

5.3 CONTROLS & DISPLAY

The Elcometer 138E Conductivity Meter is operated using 5 buttons

and displays readings and other information on the LCD screen.

Switches the meter On / Off.

In measurement mode: temperature reading switches between Celsius

and Fahrenheit.

In calibration mode: switches the meter to temperature calibration mode.

In temperature calibration mode: exits calibration mode without

conrming calibrated values.

°C/°F

Figure 1

To switch off: Press the On/Off button ‘ ’, the screen will go blank.

Note: The meter will switch off automatically after 8.5 minutes of inactivity.

5.5 SELECTING THE MEASUREMENT RANGE

The Elcometer 138E can be set to limit the reading to a particular

measuring range (PU, LO or HI) or full scale (AUTO). The default

setting is AUTO.

5.4 SWITCHING ON / OFF

To switch on: Press the On/Off button ‘ ’. The power-up sequence

will be displayed on screen (Figure 2).

en-8

5 USING THE CONDUCTIVITY METER (continued)

In measurement mode: switches to hold mode, freezing the display.

In hold mode: switches back to measurement mode.

In manual calibration and temperature calibration modes: exits

calibration without conrming calibrated values.

In range selection mode: selects a range.

Located inside the battery compartment

In measurement mode: enters calibration mode.

In calibration mode: adjusts the calibration values.

HOLD

ENT

INC

DEC

Figure 2: Power-Up Sequence

Model Number &

Software Revision

Number

Selected range &

upper limit of the

range

Measurement

Mode

Measuring Range &

Resolution

PU:

0 - 200.0µS/cm

0.1µS/cm

LO:

0 - 2000µS/cm

1µS/cm

HI:

0 - 20mS/cm

0.01mS/cm

www.elcometer.com

en-9

5 USING THE CONDUCTIVITY METER (continued)

When a range other than AUTO is selected, the meter can be

calibrated only for that particular range. If a sample is measured which

has a higher conductivity level than the selected measuring range, the

error message ‘OR’ is displayed.

To select the measuring range (Figure 3):

1 With the meter switched off, press and hold the ‘°C/°F’ button,

then switch the meter on. Release the ‘°C/°F’ button.

2 The meter goes into range selection mode. The currently

selected range is shown in the lower display. The upper display

shows the maximum possible reading for the selected range.

Press ‘HOLD ENT’ repeatedly until the required range is

displayed (PU, LO or HI).

3 The meter automatically conrms the last selection if no button is

pressed for 5 seconds. The upper display momentarily shows

‘CO’. The LCD shows the power-up sequence and the meter

goes to measurement mode.

Figure 3: Selecting the Measuring Range

Auto conrmation occurs for the last selected range if no key is pressed for 5 seconds.

°C/°F HOLD

ENT HOLD

ENT

Power-up

Sequence

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