Elcometer 138 Manuale utente
User Guide
Elcometer 138
Basic Bresle Kit & Patches
www.elcometer.com
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Section
Page
1
Overview
en-2
2
Box Contents
en-2
3
Test Procedure: ISO 8502-6 / ISO 8502-9
en-3
4
Test Procedure: US Navy PPI 63101-000
en-4
5
Using the Conductivity Meter
en-6
6
Care & Maintenance
en-17
7
Warranty Statement
en-18
8
Technical Specification
en-18
9
Spares & Accessories
en-18
10
Legal Notices & Regulatory Information
en-19
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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
© Elcometer Limited 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 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.
a
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
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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
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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.
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
c
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:
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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.
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.
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4 TEST PROCEDURE: US NAVY PPI 63101-000 (continued)
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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
1
2
3
4
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:
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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
conrming 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).
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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 conrming 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
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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 conrms 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 conrmation occurs for the last selected range if no key is pressed for 5 seconds.
°C/°F HOLD
ENT HOLD
ENT HOLD
ENT
Power-up
Sequence
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