Elcometer 138 Manuel utilisateur
User Guide
Elcometer 138
Bresle Kit & Patches
www.elcometer.com
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Section
Page
1
Overview
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2
Box Contents
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3
Test Procedure: ISO 8502-6 / ISO 8502-9
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4
Test Procedure: US Navy PPI 63101-000
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5
Using the Conductivity Meter
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6
Care & Maintenance
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7
Technical Specification
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8
Spares & Accessories
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9
Legal Notices & Regulatory Information
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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
© Elcometer Limited 2009-2016. 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.
CONTENTS
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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.
a
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
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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
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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.
b
6 During a suitable period of time ,
without removing the needle, suck and
re-inject the solution at least four
c
times .
3 TEST PROCEDURE: ISO 8502-6 / ISO 8502-9
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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
c
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:
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d
Surface Density of Salts: Factors
ISO Salt Mix
IMO PSPC equivalent NaCI
Reading
2
mg/m
µg/cm2
2
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.
1
2
3
4
5
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.
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4 TEST PROCEDURE: US NAVY PPI 63101-000
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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
1
2
3
4
5
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.
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5 USING THE CONDUCTIVITY METER
Battery
Battery
Clip
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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.
1
2
3
4
5
6
7
8
910 11 12 13
14
15
GUIDE TO CONDUCTIVITY METER & DISPLAY INDICATORS
1
Measurement Cell
Place a liquid sample in this cell to measure it
with the electrode located on the bottom of
the cell.
2
Protection Cover
Protects the measurement cell and at sensor
in storage.
3
Lithium Batteries
CR2032 x 2
4
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.
5
ON/OFF Button
Turns the meter On / Off.
6
Strap Eyelet
A strap can be attached here.
7
CAL Button
Starts calibration and switches items /
settings in the special setting mode.
8
Waterproof Gasket
Makes the meter waterproof.
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5 USING THE CONDUCTIVITY METER (continued)
GUIDE TO CONDUCTIVITY METER & DISPLAY INDICATORS
9
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.
10
CAL Icon
Flashes during calibration and illuminates
steadily when calibration is nished.
11
Battery Alarm Icon
Illuminates when the batteries are low and
need to be replaced.
12
Temperature Alarm Icon
Flashes when the measuring environment
temperature does not meet the specied
operating temperature of 5°C to 40°C
(41°F to 105°F).
13
Stability Icon
Illuminates when measured value is
stabilised.
14
Measurement Unit Display
A unit symbol illuminates corresponding to the
value displayed on the measured value
display (15). The default setting is ‘S/cm’.
15
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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