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2011/1/20 1
New Work Item Proposal of
Automated Soluble Salt Field
Measurement Standard
JSTRA
H. Hattori
2011/1/20 2
Contents
1. Salinity Measurement Methods
Ion detection tube method
Bresle Method
Automated Methods
Comparison
2. Example of Automated Method (SSM-21P)
3. Summary
4. Proposal
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2011/1/20 3
Salinity Measurement Methods
ISO 8502-5 (1998)
Ion detection tube
method (wiping)
ISO 8502-6/9
(1998)
Bresle method
Automated method
(2010)
Kitagawa Electric Conductivity
“Chloride Ion” “All Soluble Salt Ions”
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Ion Detection Tube Method
Kitagawa Chloride Detector Tube
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5
ISO8502-6/9 “Bresle Method”
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4
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Automated Methods for ISO 8502-6/9
From ARP Website From IMCS 2008
NST presentation
HEDON/ARP :
Soluble Salt Meter
NST Center :
Salt Smart
DKK-TOA : Surface
Salinity Meter SSM-
21P
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Comparison of Measurement MethodsIon detection tube
Method Bresle method
Ａｕｔｏｍａｔｅｄ method
SSM-21P
Sampling Wipe with gauzeBresle Patch and
injector
Fix to plate with
powered stirring
Detection
Method
Silver dichromate
method
Electric Conductivity
Method
Electric Conductivity
Method
Work Time 20 minutes 10 minutes 3 minutes
Pure Water
Consumption150ml 10ml 10ml
Sampling Area 2500cm2 12.5cm2 12.5cm2
Measurement
Calculation
・Cl - measurement
using sensor tube
・Calculate to NaCl
concentration.
・Conductivity
Measurement
・Calculate to NaCl
concentration
・Conductivity
Measurement
・Convert to NaCl
concentration by
software
Consumables
( Cost /times)
Tube,Gauze,Tapes,
Water
(25)
Patch, Water
(90)
Water
(1)
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9
Less human error
Results are Reliable
Less consumables
Fast measurement
Measured readings stored
Advantages
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Use of magnet means no glue remains
on metal surface
(unlike Bresle Method)
No glue after using automated method
Glue remains after removing Bresle patch
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Advantages Less human error
Results are Reliable
Less running cost
Fast measurement
Measured readings stored
No Glue will remain
Disadvantage
•Initial cost is high
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Example of Automated Method (SSM-21P)
撹拌スイッチ
Cell
本体
測定セル
Pure water inlet
Main Unit
DetectorSwitch
Electric Stirrer
Permanent
Magnet
O-ring
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Mounting & Measurement
1. Mount Detector
2. Inject Pure Water
3. Activate StirrerPure water
Air
Magnet
SteelPure water
ElectrodeTemp. Sensor
Electric
Stirrer
4. Result is Displayed
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Measured Surface Can be Any Orientation
Downward-
horizontal surface
Upward-horizontal
surface
Vertical surface
Downward
inclined surface
Upward inclined
surface
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2011/1/20 15
Inject Pure Water into Cell
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Extraction – Stirring
Commences Start Key on the main unit & Stirrer SW on the detector
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Measurement at block stage
SSM-21P
● Majority of Japanese shipyards are already
using Model SSM-14P & SSM-21P extensively.
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Summary
Automated Soluble Salt Measurement Method has the following advantages:
Higher accuracy Higher productivity Higher reproducibility Eco-friendliness
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2011/1/20 19
Proposal
We would like to propose to standardize
automated soluble salt measurement for
reducing environmental load and
development of industry with
implementation of advanced technology.
2011/1/20 20
Thank you for your attention
