Elcometer 138 Manuale utente

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Bresle Salt Meter

User Guide

Elcometer 138

CONTENTS

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Section

Page

Overview

en-2

Box Contents

en-2

The Controls & Display

en-3

Using the Elcometer 138 Bresle Salt Meter

en-5

Taking a Reading

en-9

Care & Maintenance

en-10

Technical Specification

en-11

Spares & Accessories

en-12

Legal Notices & Regulatory Information

en-12

Dimensions: 164 x 29 x 20mm (6.5 x 1.1 x 0.79")

Weight: 50g (1.76 oz) - including sensor and batteries

http://www.elcometer.com/images/stories/MSDS/Elcometer_138_84uScm_Calibration_Solution.pdf

A Material Safety Data Sheet for the Elcometer 138 Standard 84μS/cm Calibration Solution is available to download via our website:

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

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.

1 OVERVIEW

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Incorporating a flat sensor, the Elcometer 138 Bresle Salt Meter has been designed primarily for use in

accordance with ISO 8502-6 / ISO8502-9. It measures the conductivity of the sample but displays the

surface density of salts. The measured conductivity is converted to surface density of salts using the

ISO Salt Mix or IMO PSPC equivalent NaCI conversion factors below, dependent on the measurement

mode selected, based on an area of 12.5cm and a sample volume of 3ml.

For detailed information on taking measurements in accordance with ISO 8502-6 /ISO8502-9, please

refer to the user guides for the Elcometer 138 Bresle Salt Kits.

a International Maritime Organisation, Performance Standard for Protective Coatings.

2 BOX CONTENTS

Elcometer 138 Bresle Salt Meter & Sensor

Conditioning Solution; 14ml (0.47 fl oz)

CR2032 Lithium Batteries; x2 (supplied fitted to the Elcometer 138)

User Guide

Note: The Elcometer 138 Bresle Salt Meter measures 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.

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

The Elcometer 138 Bresle Salt Meter can also be used in accordance with US NAVY PPI 63101-000

(Rev 27), ISO 8502-11; AS 3894.6-A and SSPC Guide 15.

The Elcometer 138 Bresle Salt Meter is operated using 3 buttons and displays readings and other

information on the LCD screen.

MEAS

IMO

ISO

CAL BATT

°C

µg/cm

000.0

910 11 12 13

3 THE CONTROLS & DISPLAY

ELCOMETER 138 BRESLE SALT METER OVERVIEW

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 ﬂat sensor in storage.

Lithium Batteries

CR2032 x 2

MEAS Button

Sets the measurement mode (ISO or IMO). View the ambient temperature measured with

the internal temperature sensor (to be used as a guide only). Switches from calibration

mode to measurement mode.

ON/OFF Button

Turns the meter On / Oﬀ.

Strap Eyelet

A strap can be attached here.

CAL Button

Starts calibration procedure.

Waterproof Gasket

Makes the meter waterproof.

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en-4

3 THE CONTROLS & DISPLAY (continued)

DISPLAY INDICATORS

Stability Icon

Illuminates when measured value is stabilised.

MEAS Icon

Illuminates when in measurement mode.

CAL Icon

Flashes during calibration and illuminates steadily when calibration is ﬁnished.

Temperature Alarm Icon

Flashes when the ambient temperature does not meet the speciﬁed operating

temperature of 5°C to 40°C (41°F to 105°F).

Battery Alarm Icon

Illuminates when the batteries are low and need to be replaced.

Measurement Units

The default setting is µg/cm .

Measured Value

Displays the surface density of salts calculated using the measured conductivity of the

sample, see below for further information.

Measurement Mode

Selected

The surface density of salts is calculated using the ISO Salt Mix (ISO Mode) or IMO

PSPC (IMO Mode) equivalent NaCI conversion factors, see Section 1 ‘Overview’ on page

en-2.

4 USING THE ELCOMETER 138 BRESLE SALT METER

Ÿ The sensor is a consumable part. If it becomes damaged or its performance deteriorates, it will

need to be replaced - see Section 8 ‘Spares & Accessories’ on page en-12.

4.1 CAUTION

Ÿ Do not subject the meter to high temperature or humidity.

Ÿ Do not allow contact with solvents.

Ÿ Although the product is waterproof, avoid immersing it completely. If the meter is accidentally

dropped in water, take it out and remove the moisture.

To fit or replace the batteries:

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

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

Ÿ Do not exert undue force on the sensor.

4.2 FITTING AND REPLACING THE BATTERIES

The Elcometer 138 Bresle Salt Meter uses dry cell batteries only and is supplied with two CR2032 lithium

batteries fitted with an isolation strip. Remove the isolation strip before first use.

Ÿ Never apply undue force when opening the meter (to change the batteries or sensor).

1 Place batteries in the battery clips ensuring correct

polarity.

Ÿ Do not drop the meter.

Ÿ To ensure the meter is waterproof check that the waterproof gasket is clean, not damaged,

seated properly in the groove and is not twisted or warped.

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.

Battery

Clip

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4 USING THE ELCOMETER 138 BRESLE SALT METER (continued)

Detaching the sensor:

2 Slide the sensor across the meter so the clip (A) fits into the hole

on the sensor tongue (a), as shown.

Note: Ensure that the waterproof gasket is lying flat and not twisted.

2 The sensor can now be completely removed from the meter.

When the battery voltage becomes low, the low battery warning indicator will flash. Replace both

batteries immediately.

Attaching the sensor:

1 Lift the sensor tongue tip and slide the sensor slightly away from the meter.

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.

Ensure the meter is turned OFF before attaching / detaching the sensor. If the meter is turned ON with

the sensor detached, the battery alarm may illuminate. In this case, turn the meter OFF and attach the

sensor, and then turn the meter ON again.

4.3 ATTACHING & DETACHING THE SENSOR

1 Ensure that the waterproof gasket is clean and undamaged.

When removing the sensor, do not let any water penetrate the inside of the

meter. If some moisture remains on the waterproof gasket, very carefully wipe

the moisture off.

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Waterproof

Gasket

4 USING THE ELCOMETER 138 BRESLE SALT METER (continued)

Ensure that the sensor tongue is outside the meter case. If the tongue is inserted between the case and

the connector of the meter, it may damage the connector.

Correct procedure for closing meter after removal of the sensor:

2 Leave for approximately 10 minutes.

4 Wash the measurement cell with standard solution.

Replacement Sensor T13830628

The sensor is a consumable part. If it becomes damaged or its performance deteriorates, it will need to

be replaced.

Description Part Number

3 Clean the measurement cell with running water.

5 Perform the calibration procedure, see Section 4.5 on page en-8.

1 Put some drops of the conditioning solution into the measurement cell.

4.4 ELECTRODE SURFACE TREATMENT PROCEDURE

When using the sensor for the first time or again after several weeks of disuse, perform the electrode

surface treatment procedure as follows:

Sensor Tongue Meter

Connector Sensor Meter Sensor Meter

üû

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en-8

1 Press the ON/OFF button to switch the meter on.

4.5 CALIBRATING THE ELCOMETER 138

When using the sensor for the first time or again after several weeks of disuse, perform the electrode

surface treatment procedure, see Section 4.4 on page en-7:

2 Press the CAL button until appears on the display.

5 Clean the sensor with tap water and remove moisture.

4 Close the protection cover and press the CAL button for over 2 seconds.

and J ﬂash and the calibration value is displayed. After the calibration

is completed, and J stop ﬂashing and illuminate steadily.

6 Press the MEAS button for 0.5 seconds to enter the measurement mode and

prepare for measurement.

4 Bubbles in the solution may cause the measurement to be inaccurate.

4 If continues to flash and the ‘Err’ (error message) is displayed, the calibration has

failed. Check that the standard solution conductivity is correct and perform the calibration

procedure again after thoroughly cleaning the sensor. If the calibration failed whilst using

the correct standard solution, the sensor may be damaged and should be replaced, see

Section 4.3 on page en-7.

3 an appropriate amount Open the protection cover and place of standard

84µS/cm solution, see Section 8 ‘Spares & Accessories on page en-12, into

the measurement cell avoiding the inclusion of bubbles. Washing the sensor

with standard solution beforehand may provide more accurate calibration.

CAL

Button

Protection

Cover

CAL

4 USING THE ELCOMETER 138 BRESLE SALT METER (continued)

CAL

Cell

Electrode

Appropriate Too Little

en-9 www.elcometer.com

5 TAKING A READING

The Elcometer 138 Bresle Salt Meter has been designed primarily for use in accordance with ISO 8502-6

/ ISO8502-9. It measures the conductivity of the sample but displays the surface density of salts. The

measured conductivity is converted to surface density of salts using the ISO Salt Mix or IMO PSPC

equivalent NaCI conversion factors below, dependent on the measurement mode selected, based on an

area of 12.5cm and a sample volume of 3ml.

For detailed information on taking measurements in accordance with ISO 8502-6 /ISO8502-9, please

refer to the user guides for the Elcometer 138 Bresle Salt Kits.

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

5 Read the value displayed when appears. illuminates when measured value is stabilised.J J

Note: If a measurement result is out of the speciﬁed measurement range, the displayed measured value ﬂashes.

5.1 TAKING A READING

2 Open the protection cover.

3 Put 3ml of the sample into the measurement cell avoiding the inclusion of

bubbles.

4 Bubbles in the solution may cause the measurement to be inaccurate.

4 Close the protection cover.

4 Ambient air may cause the measurement values to fluctuate. To reduce

environmental interference, close the protection cover.

1 Press the ON/OFF button to switch the meter on.

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