Hach-Lange POLYMETRON 9240 User Manual
DOC024.52.93034
POLYMETRON Model 9240 Multi-Channel Sodium
Analyzer
User Manual
09/2013, Edition 8
Table of Contents
Section 1 General Information.........................................................................................................5
1.1 Disclaimer .................................................................................................................................... 5
1.2 Contact information...................................................................................................................... 5
1.3 Safety information ........................................................................................................................ 5
1.3.1 Use of hazard information................................................................................................... 5
1.3.2 Safety recommendations .................................................................................................... 6
1.3.3 Service and repairs .............................................................................................................6
1.3.4 Potential safety hazards...................................................................................................... 6
1.3.5 Precautionary labels............................................................................................................7
1.3.6 EMC compliance statement (Korea) ................................................................................... 7
1.4 Product recycling information.......................................................................................................8
1.5 Product disposal ........................................................................................................................ 10
1.6 Restriction of hazardous substances (RoHS) ............................................................................11
Section 2 Specifications.................................................................................................................. 13
2.1 Technical specifications .............................................................................................................13
2.2 Model identification system........................................................................................................ 15
Section 3 Analyzer Overview ......................................................................................................... 17
3.1 Overview .................................................................................................................................... 17
3.2 Schematic process overview ..................................................................................................... 18
3.3 Presentation of the analyzer ...................................................................................................... 19
3.3.1 Analyzer front panel ..........................................................................................................19
3.3.2 Analyzer rear panel........................................................................................................... 20
3.3.3 Pumps box ........................................................................................................................21
3.4 Conditioning reagent.................................................................................................................. 22
3.5 pH regulation..............................................................................................................................23
3.5.1 Non-cationic applications ..................................................................................................23
3.5.2 Cationic applications ......................................................................................................... 23
3.6 Measurement process ............................................................................................................... 25
3.6.1 Smart rinse option............................................................................................................. 25
3.6.2 Measurement steps........................................................................................................... 26
3.6.3 Measurement cycle........................................................................................................... 29
3.6.4 On-line measurement........................................................................................................29
3.7 Automatic calibration cycle ........................................................................................................ 30
3.8 Manual calibration cycle.............................................................................................................32
3.9 Grab sample measurement cycle .............................................................................................. 33
3.10 Analyzer outputs ...................................................................................................................... 34
3.10.1 Sensor reactivation ......................................................................................................... 34
3.10.2 Standard measurement process.....................................................................................34
3.10.3 Grab sample process......................................................................................................34
3.10.4 Auto calibration process..................................................................................................35
3.10.5 Manual calibration process ............................................................................................. 35
3.11 Available options...................................................................................................................... 36
3.11.1 K-Kit (cationic)................................................................................................................. 36
3.11.2 Static heat exchanger system......................................................................................... 36
3.11.3 Extra channels ................................................................................................................ 36
Section 4 Installation........................................................................................................................37
4.1 Analyzer inspection and unpacking ........................................................................................... 37
4.2 Instrument preparation............................................................................................................... 37
4.3 Instrument mounting .................................................................................................................. 38
4.3.1 Panel mounting .................................................................................................................38
4.3.2 Wall mounting ................................................................................................................... 39
4.4 Step-by-step installation.............................................................................................................40
4.4.1 Mains power connection ................................................................................................... 40
4.4.2 RS485 connection............................................................................................................. 45
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Table of Contents
4.4.3 Input/Output connections ..................................................................................................47
4.4.4 Sample tubes installation ..................................................................................................48
4.4.5 Reagents installation .........................................................................................................49
4.4.6 Magnetic stirrer installation................................................................................................50
4.4.7 Reagents volume declaration............................................................................................51
4.4.8 Flow rate adjustment .........................................................................................................52
4.4.9 Sample pH conditioning check ..........................................................................................53
4.4.10 Reference electrode installation......................................................................................54
4.4.11 Sodium ion selective electrode installation......................................................................56
4.4.12 Fill electrolyte reservoir ...................................................................................................57
4.5 Analyzer stabilization..................................................................................................................58
4.6 Analyzer setup............................................................................................................................58
Section 5 Operati ng Instructions ..................................................................................................59
5.1 Data entry...................................................................................................................................59
5.1.1 Function keys ....................................................................................................................59
5.1.2 Numeric fields....................................................................................................................60
5.1.3 Alphanumeric fields...........................................................................................................61
5.1.4 List element fields..............................................................................................................62
5.1.5 Incremental value fields.....................................................................................................62
5.1.6 Data entry input errors.......................................................................................................62
5.2 Measurement screens................................................................................................................63
5.2.1 Principal display ................................................................................................................63
5.2.2 Historical display ...............................................................................................................64
5.2.3 Alarms screen ...................................................................................................................65
5.3 Main menu..................................................................................................................................66
5.3.1 Verification.........................................................................................................................67
5.3.2 Grab sample...................................................................................................................... 69
5.4 Menu structure overview ............................................................................................................71
Section 6 System Setup...................................................................................................................73
6.1 System setup - Menu overview ..................................................................................................74
6.2 Date and time.............................................................................................................................74
6.3 Display options...........................................................................................................................75
6.4 Passwords..................................................................................................................................76
6.5 Default values.............................................................................................................................76
6.6 Adjust mA output........................................................................................................................77
6.7 Factory settings..........................................................................................................................77
Section 7 User Setup........................................................................................................................79
7.1 User setup - Menu overview.......................................................................................................80
7.2 Measurement .............................................................................................................................81
7.2.1 Targeted pH (non-cationic applications only)....................................................................81
7.2.2 Total gas/water ratio (cationic applications only)...............................................................81
7.2.3 Measure steps................................................................................................................... 81
7.2.4 Reactivation frequency......................................................................................................82
7.2.5 Datalogger setup ...............................................................................................................83
7.2.6 Graph time base................................................................................................................84
7.3 Alarms ........................................................................................................................................84
7.3.1 Alarms 1 to 4 .....................................................................................................................85
7.3.2 Warning alarm ...................................................................................................................86
7.3.3 System alarm ....................................................................................................................86
7.3.4 System and warning alarm table.......................................................................................87
7.4 mA outputs .................................................................................................................................88
7.4.1 Outputs 0 to 5....................................................................................................................88
7.4.2 Event indication .................................................................................................................89
7.4.3 Test ...................................................................................................................................90
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Table of Contents
7.5 RS485 (or PROFIBUS) ..............................................................................................................90
7.6 Sample channels ....................................................................................................................... 91
7.6.1 Number of channels.......................................................................................................... 91
7.6.2 Channel activation............................................................................................................. 92
7.6.3 Sequence..........................................................................................................................92
7.6.4 Channel names.................................................................................................................92
Section 8 Calibration........................................................................................................................93
8.1 General ...................................................................................................................................... 93
8.2 Calibration solution concentrations ............................................................................................ 93
8.3 Calibration - Menu overview ...................................................................................................... 94
8.4 Start calibration ..........................................................................................................................94
8.4.1 Calibrate known addition...................................................................................................94
8.4.2 One point calibration ......................................................................................................... 97
8.4.3 Two point calibration .........................................................................................................98
8.5 Automatic calibration setup........................................................................................................99
8.6 Calibration results .................................................................................................................... 100
8.7 Calibration loggings ................................................................................................................. 100
8.8 Custom adjustment .................................................................................................................. 101
8.9 Temperature calibration ........................................................................................................... 101
Section 9 Maintenance and Diagnostics ................................................................................... 103
9.1 Maintenance schedule ............................................................................................................. 103
9.2 Battery replacement................................................................................................................. 103
9.3 Fuse replacement .................................................................................................................... 104
9.4 Cleaning and decontamination ................................................................................................ 104
9.5 Maintenance and diagnostics menu option.............................................................................. 105
9.6 Maintenance and diagnostics - Menu overview....................................................................... 105
9.7 Reagent changes..................................................................................................................... 106
9.7.1 Adjust bottle volumes......................................................................................................106
9.7.2 Priming tubes ..................................................................................................................107
9.7.3 Bottles full........................................................................................................................ 107
9.8 Calibration diagnostics.............................................................................................................108
9.9 Raw values .............................................................................................................................. 108
9.10 Test accessories ....................................................................................................................108
9.10.1 Hydraulics ..................................................................................................................... 109
9.10.2 Relays ...........................................................................................................................109
9.10.3 Logical inputs ................................................................................................................110
9.11 Sensor reactivation ................................................................................................................ 110
9.12 Extended stop ........................................................................................................................ 111
9.13 Startup ................................................................................................................................... 112
9.14 Software versions .................................................................................................................. 112
Section 10 Troubleshooting ......................................................................................................... 113
10.1 General faults.........................................................................................................................113
10.2 Detection of functional faults..................................................................................................116
10.3 Miscellaneous problems ........................................................................................................ 116
Section 11 Spare Parts and Accessories ..................................................................................117
11.1 Accessories - Options - Maintenance kits.............................................................................. 117
11.2 Spare parts - In contact with sample...................................................................................... 118
11.3 Spare parts - In contact with cell or electrodes ...................................................................... 118
11.4 Spare parts - In contact with reagents or standard solution................................................... 119
11.5 Electronics ............................................................................................................................. 119
11.6 Additional hardware ............................................................................................................... 120
Section 12 Default Configuration................................................................................................121
12.1 User configuration table......................................................................................................... 121
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Section 13 Material Safety Data Sheets (MSDS) ......................................................................127
13.1 Diisopropylamine (DIPA)........................................................................................................127
13.2 Potassium chloride.................................................................................................................130
13.3 Sodium chloride......................................................................................................................132
13.4 Sodium nitrate ........................................................................................................................134
Section 14 Reagent Preparation..................................................................................................137
14.1 Conditioning Reagent.............................................................................................................137
14.2 Standard Solutions.................................................................................................................137
14.3 Automatic Calibration Solution (10 ppm Na) ..........................................................................138
14.4 3M KCl....................................................................................................................................139
14.5 0.5M NaNO3 ..........................................................................................................................139
4
Section 1 General Information
1.1 Disclaimer
The information in this manual has been carefully checked and is believed to be accurate.
However, Hach Lange assumes no responsibility for any inaccuracies that may be contained in
this manual. In no event will Hach Lange be liable for direct, indirect, special, incidental, or
consequential damages resulting from any defect or omission in this manual, even if advised of
the possibility of such damages. In the interest of continued product development, Hach Lange
reserves the right to make improvements in this manual and the products it describes at any
time, without notice or obligation.
Copyright © 2007-2013 by Hach Lange. All rights reserved. No part of the contents of this
manual may be reproduced or transmitted in any form or by any means without the written
permission of Hach Lange.
1.2 Contact information
Manufacturing site:
HACH LANGE Sàrl
6, route de Compois
1222 Vésenaz
SWITZERLAND
Tel. +41 22 594 6400
Fax +41 22 594 6499
1.3 Safety information
Read this entire manual before unpacking, setting up or operating this equipment. Pay attention
to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
To make sure that the protection provided by this equipment is not impaired, do not use or
install this equipment in any manner other than that specified in this manual.
Note: This equipment has been tested and found to comply with the limits for Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be required
to correct the interference at his own expense.
1.3.1 Use of hazard information
European HQ:
HACH LANGE GmbH
Willstätterstraße 11
40549 Düsseldorf
GERMANY
Tel. +49 211 52 880
Fax +49 211 52 88143
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION
Indicates a potentially or imminently hazardous situation that may result in minor or moderate
injury.
NOTICE
Indicates a situation which, if not avoided, may cause damage to the instrument. Information
that requires special emphasis.
5
General Information
1.3.2 Safety recommendations
For safe operation, it is imperative that these service instructions be read before use and that
the safety recommendations mentioned herein be scrupulously respected. If repairs or
adjustments are necessary, the analyzer should be returned to an authorized Hach Lange
service center.
If danger warnings are not heeded to, serious material or bodily injury could occur.
In accordance with safety standards, it must be possible to disconnect the power supply of the
analyzer in its immediate vicinity.
The installation of the analyzer should be performed exclusively by personnel specialized and
authorized to work on electrical installations, in accordance with relevant local regulations.
1.3.3 Service and repairs
None of the analyzer’s components can be serviced by the user. Only personnel from Hach
Lange or its approved representative(s) is (are) authorized to attempt repairs to the system and
only components formally approved by the manufacturer should be used. Any attempt at
repairing the analyzer in contravention of these principles could cause damage to the analyzer
and corporal injury to the person carrying out the repair. It renders the warranty null and void
and could compromise the correct working of the analyzer and the electrical integrity or the CE
compliance of the analyzer.
WARNING
WARNING
If you have any problems with installation, starting, or using the analyzer please contact the
company that sold it to you. If this is not possible, or if the results of this approach are not
satisfactory, please contact the manufacturer’s Customer Service.
1.3.4 Potential safety hazards
The following potential safety hazards are associated with operating the analyzer:
• Electrical (line voltage)
• Potentially hazardous chemicals
6
1.3.5 Precautionary labels
Read all labels and tags attached to the analyzer. Personal injury or damage to the analyzer
could occur if not observed.
This symbol, when noted on a product, indicates a potential hazard which could cause serious
personal injury and/or death. The user should reference this instruction manual for operation
and/or safety information.
This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical
shock and/or electrocution exists and indicates that only individuals qualified to work with
hazardous voltages should open the enclosure or remove the barrier.
This symbol, when noted on the product, indicates that the marked item can be hot and
should not be touched without care.
This symbol, when noted on the product, indicates the presence of devices sensitive to
electrostatic discharge and indicates that care must be taken to prevent damage to them.
This symbol, when noted on the product, identifies a risk of chemical harm and indicates that
only individuals qualified and trained to work with chemicals should handle chemicals or
perform maintenance on chemical delivery systems associated with the equipment.
General Information
This symbol, if noted on the product, indicates the need for protective eye wear.
This symbol indicates the need for protective hand wear.
This symbol, when noted on the product, identifies the location of the connection for protective
earth (ground).
This symbol, when noted on a product, indicates the instrument is connected to
alternate current.
Electrical equipment marked with this symbol may not be disposed of in European public
disposal systems. In conformity with European local and national regulations, European
electrical equipment users must now return old or end-of-life equipment to the manufacturer
for disposal at no charge to the user.
Products marked with this symbol indicates that the product contains toxic or hazardous
substances or elements. The number inside the symbol indicates the environmental protection
use period in years.
Products marked with this symbol indicates that the product conforms to relevant South
Korean EMC standards.
1.3.6 EMC compliance statement (Korea)
Type of equipment Additional information
A급 기기
( 업무용 방송통신기자재 )
Class A equipment
(Industrial Broadcasting and
Communication Equipment)
이 기기는 업무용 (A 급 ) 전자파적합기기로서 판매자 또는 사
용자는 이 점을 주의하시기 바라며, 가정외의 지역에서 사용하
는 것을 목적으로 합니다 .
This equipment meets Industrial (Class A) EMC requirements. This
equipment is for use in industrial environments only.
7
General Information
1.4 Product recycling information
ENGLISH
Electrical equipment marked with this symbol may not be disposed of in
European public disposal systems after 12 August 2005. In conformity with
European local and national regulations (EU Directive 2002/96/EC), European
electrical equipment users must now return old or end-of-life equipment to the
manufacturer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment
manufacturer or supplier for instructions on how to return end-of-life
equipment for proper disposal.
DEUTSCH
Elektrogeräte, die mit diesem Symbol gekennzeichnet sind, dürfen in Europa nach dem 12.
August 2005 nicht mehr über die öffentliche Abfallentsorgung entsorgt werden. In
Übereinstimmung mit lokalen und nationalen europäischen Bestimmungen (EU-Richtlinie
2002/96/EC), müssen Benutzer von Elektrogeräten in Europa ab diesem Zeitpunkt alte bzw. zu
verschrottende Geräte zur Entsorgung kostenfrei an den Hersteller zurückgeben.
Hinweis: Bitte wenden Sie sich an den Hersteller bzw. an den Händler, von dem Sie das Gerät
bezogen haben, um Informationen zur Rückgabe des Altgeräts zur ordnungsgemäßen
Entsorgung zu erhalten.
FRANCAIS
A partir du 12 août 2005, il est interdit de mettre au rebut le matériel électrique marqué de ce
symbole par les voies habituelles de déchetterie publique. Conformément à la réglementation
européenne (directive UE 2002/96/EC), les utilisateurs de matériel électrique en Europe doivent
désormais retourner le matériel usé ou périmé au fabricant pour élimination, sans frais pour
l'utilisateur.
Remarque: Veuillez vous adresser au fabricant ou au fournisseur du matériel pour les
instructions de retour du matériel usé ou périmé aux fins d'élimination conforme.
ITALIANO
Le apparecchiature elettriche con apposto questo simbolo non possono essere smaltite nelle
discariche pubbliche europee successivamente al 12 agosto 2005. In conformità alle normative
europee locali e nazionali (Direttiva UE 2002/96/EC), gli utilizzatori europei di apparecchiature
elettriche devono restituire al produttore le apparecchiature vecchie o a fine vita per lo
smaltimento senza alcun costo a carico dell’utilizzatore.
Nota: Per conoscere le modalità di restituzione delle apparecchiature a fine vita da riciclare,
contattare il produttore o il fornitore dell’apparecchiatura per un corretto smaltimento.
DANSK
Elektriske apparater, der er mærket med dette symbol, må ikke bortskaffes i europæiske offentlige
affaldssystemer efter den 12. august 2005. I henhold til europæiske lokale og nationale regler
(EU-direktiv 2002/96/EF) skal europæiske brugere af elektriske apparater nu returnere gamle eller
udtjente apparater til producenten med henblik på bortskaffelse uden omkostninger for brugeren.
Bemærk: I forbindelse med returnering til genbrug skal du kontakte producenten eller
leverandøren af apparatet for at få instruktioner om, hvordan udtjente apparater bortskaffes
korrekt.
8
General Information
SVENSKA
Elektronikutrustning som är märkt med denna symbol kanske inte kan lämnas in på europeiska
offentliga sopstationer efter 2005-08-12. Enligt europeiska lokala och nationella föreskrifter
(EU-direktiv 2002/96/EC) måste användare av elektronikutrustning i Europa nu återlämna gammal
eller utrangerad utrustning till tillverkaren för kassering utan kostnad för användaren.
Obs! Om du ska återlämna utrustning för återvinning ska du kontakta tillverkaren av utrustningen
eller återförsäljaren för att få anvisningar om hur du återlämnar kasserad utrustning för att den ska
bortskaffas på rätt sätt.
ESPANOL
A partir del 12 de agosto de 2005, los equipos eléctricos que lleven este símbolo no deberán ser
desechados en los puntos limpios europeos. De conformidad con las normativas europeas
locales y nacionales (Directiva de la UE 2002/96/EC), a partir de esa fecha, los usuarios
europeos de equipos eléctricos deberán devolver los equipos usados u obsoletos al fabricante de
los mismos para su reciclado, sin coste alguno para el usuario.
Nota: Sírvase ponerse en contacto con el fabricante o proveedor de los equipos para solicitar
instrucciones sobre cómo devolver los equipos obsoletos para su correcto reciclado.
NEDERLANDS
Elektrische apparatuur die is voorzien van dit symbool mag na 12 augustus 2005 niet meer
worden afgevoerd naar Europese openbare afvalsystemen. Conform Europese lokale en
nationale wetgegeving (EU-richtlijn 2002/96/EC) dienen gebruikers van elektrische apparaten
voortaan hun oude of afgedankte apparatuur kosteloos voor recycling of vernietiging naar de
producent terug te brengen.
Nota: Als u apparatuur voor recycling terugbrengt, moet u contact opnemen met de producent of
leverancier voor instructies voor het terugbrengen van de afgedankte apparatuur voor een juiste
verwerking.
POLSKI
Sprzęt elektryczny oznaczony takim symbolem nie może być likwidowany w europejskich
systemach utylizacji po dniu 12 sierpnia 2005. Zgodnie z europejskimi, lokalnymi i państwowymi
przepisami prawa (Dyrektywa Unii Europejskiej 2002/96/EC), użytkownicy sprzętu elektrycznego
w Europie muszą obecie przekazywać Producentowi stary sprzęt lub sprzęt po okresie
użytkowania do bezpłatnej utylizacji.
Uwaga: Aby przekazać sprzęt do recyklingu, należy zwrócić się do producenta lub dostawcy
sprzętu w celu uzyskania instrukcji dotyczących procedur przekazywania do utylizacji sprzętu po
okresie użytkownia.
PORTUGUES
Qualquer equipamento eléctrico que ostente este símbolo não poderá ser eliminado através dos
sistemas públicos europeus de tratamento de resíduos sólidos a partir de 12 de Agosto de 2005.
De acordo com as normas locais e europeias (Directiva Europeia 2002/96/EC), os utilizadores
europeus de equipamentos eléctricos deverão agora devolver os seus equipamentos velhos ou
em fim de vida ao produtor para o respectivo tratamento sem quaisquer custos para o utilizador.
Nota: No que toca à devolução para reciclagem, por favor, contacte o produtor ou fornecedor do
equipamento para instruções de devolução de equipamento em fim de vida para a sua correcta
eliminação.
9
General Information
1.5 Product disposal
Note: The following only applies to European customers.
Hach Lange is committed to ensuring that the risk of any environmental damage or pollution
caused by any of its products is minimized as far as possible. The European Waste Electrical
and Electronic Equipment (WEEE) Directive (2002/96/EC) that came into force on August 13
2005 aims to reduce the waste arising from electrical and electronic equipment; and improve the
environmental performance of all those involved in the life cycle of electrical and electronic
equipment.
In conformity with European local and national regulations (EU Directive 2002/96/EC stated
above), electrical equipment marked with the above symbol may not be disposed of in
European public disposal systems after 12 August 2005.
Hach Lange will offer to take back (free of charge to the customer) any old, unserviceable or
redundant analyzers and systems which carry the above symbol, and which were originally
supplied by Hach Lange. Hach Lange will then be responsible for the disposal of this
equipment.
In addition, Hach Lange will offer to take back (at cost to the customer) any old, unserviceable
or redundant analyzers and systems which do not carry the above symbol, but which were
originally supplied by Hach Lange. Hach Lange will then be responsible for the disposal of this
equipment.
Should you wish to arrange for the disposal of any piece of equipment originally supplied by
Hach Lange, please contact your supplier or our After Sales Service department in Geneva for
instructions on how to return this equipment for proper disposal.
10
1.6 Restriction of hazardous substances (RoHS)
The European Union RoHS Directive and subsequent regulations introduced in member states
and other countries limits the use of six hazardous substances used in the manufacturing of
electrical and electronic equipment.
Currently, monitoring and control instruments do not fall within the scope of the RoHS Directive,
however Hach Lange has taken the decision to adopt the recommendations in the Directive as
the target for all future product design and component purchasing.
Note: The following only applies to exports of this product into the People’s Republic of China.
General Information
Transmitter box X
CPU PCB (with battery) O O
Power PCB O O
RS485 PCB O
O:
X:
11
General Information
12
Section 2 Specifications
2.1 Technical specifications
Specifications are subject to change without notice.
Ta ble 1 Techni c a l sp ec if ic at io n s
PERFORMANCE SPECIFICATIONS
Measuring range
Accuracy
Repeatability
Average response times at 25°C
with a maximum ΔT =15°C between
channels
Electrode type pH glass electrode
Number of channels 1 to 4
Interference phosphate 10 ppm Measurement variation less 0.1 ppb.
Sample temperature interference < 0.5% / °C
0 to 10,000 ppb freely programmable
0 to 200 ppm with K-Kit option
Non-cationic application:
± 0.1 ppb or ± 5% of reading, whichever is greater
Cationic application:
± 2 ppb or 5% reading, whichever is greater
< 0.02 ppb or 1.5% reading, whichever is greater within 10°C
variation
T90% ≤ 10 min
Concentration step
from one channel to
another
0.1 ↔ 5 ppb 3 9 min 27 min
0.1 ↔ 50 ppb 3 11 min 41 min
0.1 ↔ 200 ppb 3 9 min 45 min
< 0.1 ↔ 1 ppb
0.1 ↔ 50 ppb 15 11 min 41 min
ENVIRONMENT AL REQUIREMENTS
(1)
Max. temp
variation
(°C)
3 29 min 36 min
Time to reach accuracy 0.1
ppb or 5%
up down
Typical environment
Suspended solids < 2 NTU, no oil, no grease.
Temperature range for storage -20 to 60°C (2 to 140°F)
Relative humidity 10 to 80%
Ambient temperature 5 to 50°C (41 to 122°F)
Sample temperature variation
pH range of sample
Flow rate 6 to 9 L/hour
Pressure 0.2 to 6 bar (3 - 87 psi)
Acidity Less than 250 ppm (equivalent CaCO
Power supply voltage fluctuation ± 10%
Over voltage category 2 (according to standard EN 61010-1)
Pollution degree 2 (according to standard CEI 664)
Altitude < 2000 m
Measurement category Cat II, Class 1 (overvoltage < 1500V)
Power station / indoor / demineralized water plant or
instrumentation room
Stabilization in 10 mins from 15°C to 30°C
Use the static heat exchanger system when the temperature
difference between samples is higher than 15°C
Non-cationic application: 6 to 10 pH
Cationic application: 2 to 10 pH
)
3
13
Specifications
MECHANICAL SPECIFICATIONS
Maximum panel dimension
(H x L x D)
Inlet
Outlet Barbed stem for 12 mm (½" I.D.) hose
Protection rate
Cell PMMA - compact (minimum tubing)
Flame rate Conform UL
Maximum weight 15 - 30 Kg
Mains power supply 100 - 240 VAC, 50-60 Hz, ± 10%, automatic switching
Max. consumption 80 VA.
Fuse 5 x 20 cartridge T2AL-250V following CEI127
Display
Analog outputs
Relays
Logic input
850 x 450 x 252.5mm [33.46 x 17.71 x 9.94in]
Simple fittings for 6 mm O.D. tubing or ¼" O.D. in
PE-low density. ¼" OD in PHED-PTFE-SS as option
Transmitter: IP65 (NEMA 4)
Panel: IP50 (Dust protection)
Optional Enclosure: IP54 (Splash water proof),
Instrument is designed to avoid DIPA vapor inside the enclosure.
All DIPA vapor is collected and sent to the instrument drain
INTERFACE SPECIFICATIONS
Curve trend, Last Cal Date, Historical, Concentration,
Temperature, Potential
Number: 6
4-20 or 0-20 mA (650 ohms)
Linear / Dual / Logarithm
Event indication
4 x Relay (conc)
1 x Warning
1 x System
Active / Inactive channels
Remote AutoCal
ST ANDARDS
European standards
International standards cETLus
1
Experiment performed between ultra pure water (estimated at 50 ppt) and 1 ppb
EN 61326 Class A for EMC
EN 601010-1 for low voltage safety
14
2.2 Model identification system
The analyzer identification number and the instrument serial number are located on the label on
the back panel, and can be found on order confirmation and invoice papers.
Each analyzer has the following features:
• Fully automatic conditioning adjustment
• Sample temperature adjustment
• Automatic sensor reactivation
• Automatic and manual calibration
• Grab sample measurement
Specifications
0 Standard (0.01 to 10,000 ppb)
1 Kit K (1 ppb to 200 ppm)
0 Panel Version
1 Wall-Mount Enclosure
0 Standard
09240=A=
Figure 1 Model identification matrix
Example:
09240=A=0124
• Multi channel sodium analyzer model 9240
• Standard version (0.01 to 10,000 ppb)
• Wall mount enclosure
• With Profibus option
• 4-channel version
1 With RS485
2 With Profibus
1 One channel
2 Two channels
3 Three channels
4 Four channels
15
Specifications
16
Section 3 Analyzer Overview
3.1 Overview
The Polymetron 9240 Sodium Analyzer is a continuous on-line monitor for direct measurement
of sodium in power generation processes.
The measurement is based on a direct potentiometric technique using a highly sensitive sodium
glass electrode. The difference of potential between the glass electrode and the reference
electrode is directly proportional to the logarithm of sodium concentration as shown by the
Nernst law:
With:
• K
• a
• Z
• E
The analyzer features low maintenance, automatic or manual process calibration and uses a
sodium-sensitive glass electrode together with a reference electrode to measure sodium
concentrations in a sample that has been previously conditioned to a pH > 10.5.
The pH value can be set to between 10.7 and 11.6 pH and is controlled by measuring the
conductivity of the conditioned sample.
External grab sample analysis is also available for this high-accuracy analyzer.
The physical system consists of two integrated units, the electronics control section and the
liquid handling section.
: Selectivity constant of the ion S
Na-S
: Activity of the ion S
S
: Valency of the ion S
S
: Diffusion potential (conductivity dependant)
D
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Analyzer Overview
3.2 Schematic process overview
The illustration below shows the major components of the analyzer.
Figure 2 Working principal
1 - Sample inlet flow adjustment (one per channel) 7 - Sample level detector 13 - Sodium ion-selective electrode
2 - Fast loop sample outlet (one per channel) 8 - Drain 14 - Temperature electrode
3 - Magnetic stirrer 9 - Drain pump 15 - Reactivation solution
4 - Conditioning valve 10 - Auto-calibration pump 16 - Conditioning solution
5 - Stirrer motor 11 - Reactivation pump 17 - Calibration solution
6 - Overflow vessel 12 - Reference electrode
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3.3 Presentation of the analyzer
3.3.1 Analyzer front panel
Analyzer Overview
Figure 3 Analyzer front panel
1 - User interface 5 - Door lock
2 - Overflow vessel 6 - Reagent shelf
3 - Measuring cell 7 - Frame for panel mounting
4 - Flow rate adjustment for each channel
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Analyzer Overview
3.3.2 Analyzer rear panel
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Figure 4 Analyzer rear panel
1 - Local controller box 4 - Sample inlet valves
2 - Electrolyte reservoir 5 - Calibration canister
3 - Pump box (see also Pumps box on page 21) 6 - Reactivation reagent canister
3.3.3 Pumps box
Three pumps have been factory installed in the pump box and are used for the following
purposes:
Analyzer Overview
Figure 5 Pumps box interior
1 - Auto-calibration pump 3 - Reactivation pump
2 - Drain pump
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Analyzer Overview
3.4 Conditioning reagent
Hach Lange highly recommends the use of Diisopropylamine (DIPA) as the conditioning
reagent. Other reagents such as ammonia or ethanolamine can be applied, providing the
specification limitations imposed by amines other than DIPA are clearly understood.
The following graph (Figure 6 below) shows the curves obtained using DIPA and ammonia as
conditioning reagents. As can be seen, the DIPA curve remains linear at a much lower sodium
concentration resulting in better accuracy, repeatability, a lower detection limit, and a lower rate
of reagent consumption.
Figure 6 Calibration curves obtained with DIPA and NH3 as reagents
The following table shows the comparable values of detection limit, accuracy, repeatability, and
consumption for DIPA, ammonia, and ethanolamine:
DIPA
[C
N]
6H15
Lowest detection limit 0.01ppb 2ppb 5ppb
The greater of
Accuracy (non-cationic applications)
Accuracy (cationic applications)
Repeatability within a 10°C variation
Consumption of 1 liter at 25°C for a
pH measurement of 10 to 10.5
Note: As Hach Lange recommends DIPA to be used as the conditioning reagent, all references relating to
the conditioning reagent throughout this manual will be to DIPA.
± 0.1ppb or ± 5%
of the reading
The greater of
± 2ppb or ± 5%
of the reading
The greater of
< 0.02ppb or ±1.5%
of the reading
approx. 13 weeks approx. 3 weeks approx. 7 weeks
Ammonia
[NH
]
3
The greater of
± 1ppb or ± 5%
of the reading
The greater of
± 2ppb or ± 5%
of the reading
The greater of
< 0.1ppb or ±1.5%
of the reading
Ethanolamine
[H
N(CH2)2OH]
2
The greater of
± 2ppb or ± 7%
of the reading
The greater of
± 2ppb or ± 7%
of the reading
The greater of
< 0.2ppb or ±2%
of the reading
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3.5 pH regulation
3.5.1 Non-cationic applications
In order to ensure the accuracy and the repeatability of low sodium concentrations, pH must be
constant and preferably maintained at or above 11.2 to maintain the lowest proton interference.
The 9240 uses the injection of vapor of diisopropylamine (DIPA) to obtain high pH level without
sodium contamination. Using the siphon effect of the liquid sample column, DIPA is mixed with
the sample without using any pump or pressurized gas. A fine regulation of the siphon effect is
performed using a 2/3-way valve.
Analyzer Overview
The pH is evaluated directly and continuously from the conductivity of the conditioned sample in
the cell. In the solution, the most mobile proton (H
Therefore, by controlling the conductivity, its concentration can be maintained constant. In
addition, the pH is controlled from the conductivity by modifying the gas/liquid ratio thus
simultaneously maintaining a constant pH.
In temperature variations, the system automatically modifies the gas/liquid ratio and then adds
DIPA vapors to compensate the DIPA solubility in the sample.
If the sample is already partially conditioned by a customer system (e.g. with NH
10.5), the regulation system evaluates the pH and adds the necessary DIPA quantity to reach its
pH
The pH can be set to between 10.7 and 11.6 pH. The DIPA consumption is 500 mL/month at
25°C for a sample pH
± 0.2 and minimizes DIPA consumption.
target
3.5.2 Cationic applications
Instruments to be used in cationic applications are configured at the factory and can be
identified by their model number of 09240=A=1xxx (the 1 identifies it as being for cationic
applications).
Measurement of trace level sodium concentrations after cationic resin processes requires an
assisted conditioning because the pH in the sample to be measured will only be between 2 and
4.
The 9240 analyzer uses a gas pump with no moving parts (based on the piézo principal) to
effect this assisted conditioning. The pump is controlled by the analyzer’s electronics and works
according to the amount of sample conditioning required. The flow rate of the pump is factory
set at 200 cc/min of gas.
target
of 11.2.
+
) has the biggest influence on conductivity.
up to pH 9.5 -
3
An exit tube ensures that any DIPA vapors not dissolved in the sample are recovered and
evacuated to the drain along with the sample.
In a cationic application, the 9240 does not use conductivity to evaluate the pH. However, it can
be adjusted according to the sample pH by a time ratio of the conditioning valve aperture. A
specific T
and to adjust a constant pH.
gas/Twater
ratio is used for each channel in order to minimize the DIPA consumption
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Analyzer Overview
The usual T
gas/Twater
ratio values are as follows:
pH Tgas/Twater Ratio
2 180%
2.3 80%
2.6 50%
2.9 30%
3.5 15%
4.0 10%
Refer to Sample pH conditioning check on page 53 for the procedure to select the correct ratio
in relation to the initial pH sample.
DIPA consumption
The consumption of DIPA will depend on the values defined in the above table. With a ratio of
100% (i.e. the volume of sample is equal to the volume of gas) the consumption of DIPA will be
approximately 90 mL/day.
The following table gives additional typical consumption according to the Tgas/Twater ratio
setup:
Tgas/Twater Ratio Consumption (days per liter)
180% 6.25
150% 7.5
100% 11
80% 14
50% 22.5
30% 37
The instrument continuously monitors the use of DIPA. A warning alarm will be triggered if the
calculated volume in the bottle is less than 100 mL. A system alarm (and suspension of
measurements) will be triggered when the calculated volume is less than 50 mL.
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3.6 Measurement process
3.6.1 Smart rinse option
The measurement cell is rinsed by the analyzer after a calibration, grab sample, or sensor
reactivation process and prior to resuming sample measurements. Set the smart rinsing
parameter to No (see Measure steps on page 81) for a fixed rinse cycle of 10 minutes or set to
Yes to invoke the smart rinsing option which better guarantees the accuracy of measurements
after the rinsing cycle.
If the parameter is set to Yes, a maximum rinse time must be defined. To ensure a fast rinse the
recommended time is 60 minutes with a flow rate of 6 to 9 L/hour. During the rinse process, as
soon as the analyzer determines that measurements are stable it will revert back to sample
measurement mode. If there is an increase in the sodium concentration at any time, then after a
5 minute period the rinsing will be aborted and the analyzer will revert back to sample
measurement mode.
Analyzer Overview
Figure 7 Rinsing process after a calibration, grab sample or sensor reactivation
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Analyzer Overview
3.6.2 Measurement steps
The 9240 is designed as a multi channel analyzer, though it can be used as a single channel
analyzer. The measurement parameters are different depending on whether the analyzer is set
up as a single or multi channel analyzer.
If the analyzer is configured as a single channel unit, the following parameters are required:
• The on-line measurement time defines the measurement time of the sample, and how often
the measurement values are stored in memory. Regardless of this value the alarms, analog
outputs and RS 485 serial communication output are updated regularly (see Analyzer
outputs on page 34). The recommended (and default) value is 10 minutes, which will ensure
3 months of data stored internally.
• The smart rinse facility can be used for rinsing the measurement cell after a calibration, grab
sample or sensor reactivation. If used, a maximum rinse time must be entered.
If the analyzer is configured as a multi channel unit, the following parameters are required in
addition to the on-line measurement time and smart rinse facility described above, and are
applicable to all configured channels:
• A cycle time (total measurement and rinse time, see Figure 8 below), which must be greater
than the on-line measurement time. The longest cycle time of all channels needs to be
entered to allow an efficient rinsing time. This will guarantee the accuracy (0.1 ppb or 5%) for
all configurations.
• The search stability parameter can reduce the rinsing time after a change of measurement
channel. Set to Yes to get only accurate measurements transmitted thanks to the “smart
rinsing” cycle which automatically adapts the sample flow rate and duration of the rinsing
step, or set to No for a preferred fixed rinse time (cycle time minus on-line measurement
time), though accuracy could be at risk.
After each change of measurement channel, the analyzer rinses the measurement cell before
measuring the sodium level outputs during the on-line measurement time period as indicated in
the following diagram.
Figure 8 Analyzer cycle time
Note: The choice of the right timings is essential for accurate measurements.
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3.6.2.1 Search stability set to NO - Fixed measurement mode
As the cycle and on-line measurement times defined by the user are fixed and identical for each
channel, they need to be long enough to have an efficient rinsing step for all configurations in
order to achieve accurate measurements.
The rinsing time has to be chosen from either the channel with the highest or the lowest sodium
concentration.
The following table shows the “recommended” rinsing times to guarantee consistent and
accurate measurements. Refer also to Table 1 on page 13 for the “best performance” timings.
Table 2 Recommended rinsing times
Analyzer Overview
Previous
channel
1 → 0.05 ppb 25°C 35 min
0.05 → 1 ppb 25°C 30 min
5 → 0.1 ppb 25°C 35 min
0.1 → 5 ppb 25°C 20 min
50 → 0.1 ppb 25°C 40 min
0.1 → 50 ppb 25°C 15 min
200 → 0.1 ppb 25°C 45 min
0.1 → 200 ppb 25°C 15 min
Current channel T°
Recommended rinsing time
to reach accuracy
Example:
Channel 1: 200 ppb
Channel 2: 0.1 ppb
Channel 3: 5 ppb
Channel 4: 50 ppb
Sequence: 1 2 3 4 * * * * * * * *
In this example, and based on the table above, the best choice for the rinsing time is to choose
at least 45 minutes. If an on-line measurement time of 5 minutes is chosen, a cycle time of 50
minutes will be used to ensure the accuracy. In this case, the analyzer will spend 50 minutes on
each channel before passing on to the next.
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Analyzer Overview
3.6.2.2 Search stability set to YES - Automatic measurement mode
In this configuration, a maximum cycle time not to be exceeded has to be configured. This is the
sum of the maximum rinse time plus the fixed on-line measurement time.
As with the fixed measurement mode, the cycle and on-line measurement times need to be long
enough to meet the needs of the configuration in order to achieve accurate measurements.
In automatic measurement mode, the analyzer will minimize the rinsing time while searching for
a stable measurement. Then the cycle time is minimized by determining the shortest rinsing
time needed to reach accuracy (5% or 0.1ppb) for each channel measurement. The on-line
measurement time is fixed and remains unchanged.
If, at the end of the longest possible cycle time given by the user, the analyzer has still not
reached the stability criteria required for accuracy, the analyzer will give a measurement value
but also issues a stabiliz. errors warning. This warning alarm will stop if the stability criteria are
found the next time the analyzer is at the same point in the sequence.
If the analyzer never finds the stability criteria, a longer cycle time needs to be defined in order
to achieve accurate measurements. The recommended strategy is to give a very long time (e.g.
90 min) and the analyzer will minimize all rinsing times between channels.
Example:
Channel 1: 200 ppb
Channel 2: 0.1 ppb
Channel 3: 5 ppb
Channel 4: 50 ppb
Sequence: 1 2 3 4 * * * * * * * *
In this example, with an on-line measurement time fixed at 5 minutes and maximum cycle time
set at 60 minutes (much more than is necessary), then assuming stability for an accurate
measurement is reached, the analyzer will use the following timings:
The analyzer is assumed to be measuring channel 4:
It switches to channel 1.
Channel 1: to rinse from 50 ppb to 200 ppb, rinsing time < 15 minutes
Actual cycle time < 20 minutes (rinsing time < 15 minutes + on-line measurement time of
5 minutes)
Channel 2: to rinse from 200 ppb to 0.1 ppb, rinsing time ~ 45 minutes
Actual cycle time ~ 50 minutes (rinsing time ~ 45 minutes + on-line measurement time of
5 minutes)
Channel 3: to rinse from 0.1 ppb to 5 ppb, rinsing time ~ 20 minutes
Actual cycle time ~ 25 minutes (rinsing time ~ 20 minutes + on-line measurement time of
5 minutes)
Channel 4: to rinse from 5 ppb to 50 ppb, rinsing time < 15 minutes
Actual cycle time < 20 minutes (rinsing time < 15 minutes + on-line measurement time of
5 minutes)
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