Hach-Lange POLYMETRON 9245 User Manual

DOC024.52.93033

POLYMETRON Model 9245 Sodium Analyzer

User Manual

09/2013, Edition 13

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

3.4 Conditioning reagent..................................................................................................................21

3.5 pH regulation..............................................................................................................................22

3.5.1 Non-cationic applications ..................................................................................................22

3.5.2 Cationic applications ......................................................................................................... 22

3.6 Measurement process ............................................................................................................... 24

3.6.1 Smart rinse option............................................................................................................. 24

3.7 Automatic calibration cycle ........................................................................................................ 25

3.8 Manual calibration cycle.............................................................................................................27

3.9 Grab sample measurement cycle .............................................................................................. 28

3.10 Analyzer outputs ...................................................................................................................... 29

3.10.1 Sensor reactivation .........................................................................................................29

3.10.2 Standard measurement process.....................................................................................29

3.10.3 Grab sample process......................................................................................................29

3.10.4 Auto calibration process..................................................................................................30

3.10.5 Manual calibration process ............................................................................................. 30

3.11 Available options......................................................................................................................30

3.11.1 K-Kit (cationic).................................................................................................................30

3.11.2 Static heat exchanger system......................................................................................... 30

Section 4 Installation........................................................................................................................31

4.1 Analyzer inspection and unpacking ........................................................................................... 31

4.2 Instrument preparation...............................................................................................................31

4.3 Instrument mounting .................................................................................................................. 32

4.3.1 Panel mounting .................................................................................................................32

4.3.2 Wall mounting ...................................................................................................................33

4.4 Step-by-step installation.............................................................................................................34

4.4.1 Mains power connection ................................................................................................... 34

4.4.2 RS485 connection............................................................................................................. 39

4.4.3 Input/Output connections ..................................................................................................41

4.4.4 Sample tubes installation ..................................................................................................42

4.4.5 Reagents installation......................................................................................................... 43

4.4.6 Magnetic stirrer installation ...............................................................................................44

4.4.7 Reagents volume declaration............................................................................................45

1

Table of Contents

4.4.8 Flow rate adjustment .........................................................................................................46

4.4.9 Sample pH conditioning check ..........................................................................................47

4.4.10 Reference electrode installation......................................................................................48

4.4.11 Sodium ion selective electrode installation......................................................................50

4.4.12 Fill electrolyte reservoir ...................................................................................................51

4.5 Analyzer stabilization..................................................................................................................52

4.6 Analyzer setup............................................................................................................................52

Section 5 Operati ng Instructions ..................................................................................................53

5.1 Data entry...................................................................................................................................53

5.1.1 Function keys ....................................................................................................................53

5.1.2 Numeric fields....................................................................................................................54

5.1.3 Alphanumeric fields...........................................................................................................55

5.1.4 List element fields..............................................................................................................56

5.1.5 Incremental value fields.....................................................................................................56

5.1.6 Data entry input errors.......................................................................................................56

5.2 Measurement screens................................................................................................................57

5.2.1 Principal display ................................................................................................................57

5.2.2 Historical display ...............................................................................................................58

5.2.3 Alarms screen ...................................................................................................................58

5.3 Main menu..................................................................................................................................59

5.3.1 Verification.........................................................................................................................60

5.3.2 Grab sample......................................................................................................................62

5.4 Menu structure overview ............................................................................................................64

Section 6 System Setup...................................................................................................................65

6.1 System setup - Menu overview ..................................................................................................66

6.2 Date and time.............................................................................................................................66

6.3 Display options...........................................................................................................................67

6.4 Passwords..................................................................................................................................68

6.5 Default values.............................................................................................................................68

6.6 Adjust mA output........................................................................................................................69

6.7 Factory settings..........................................................................................................................69

Section 7 User Setup........................................................................................................................71

7.1 User setup - Menu overview.......................................................................................................72

7.2 Measurement .............................................................................................................................73

7.2.1 Targeted pH (non-cationic applications only)....................................................................73

7.2.2 Total gas/water ratio (cationic applications only)...............................................................73

7.2.3 Measure steps...................................................................................................................73

7.2.4 Reactivation frequency......................................................................................................74

7.2.5 Datalogger setup ...............................................................................................................75

7.2.6 Graph time base................................................................................................................76

7.3 Alarms ........................................................................................................................................76

7.3.1 Alarms 1 and 2 ..................................................................................................................77

7.3.2 Warning alarm ...................................................................................................................78

7.3.3 System alarm ....................................................................................................................78

7.3.4 System and warning alarm table.......................................................................................79

7.4 mA outputs .................................................................................................................................80

7.4.1 Outputs 0 to 3....................................................................................................................80

7.4.2 Event indication .................................................................................................................81

7.4.3 Test ...................................................................................................................................82

7.5 RS485 (or PROFIBUS) ..............................................................................................................82

7.6 Sample channels........................................................................................................................83

7.6.1 Channel activation.............................................................................................................83

7.6.2 Sequence ..........................................................................................................................84

7.6.3 Channel names .................................................................................................................84

2

Table of Contents

Section 8 Calibration........................................................................................................................85

8.1 General ...................................................................................................................................... 85

8.2 Calibration solution concentrations ............................................................................................ 85

8.3 Calibration - Menu overview ...................................................................................................... 86

8.4 Start calibration ..........................................................................................................................86

8.4.1 Calibrate known addition...................................................................................................86

8.4.2 One point calibration ......................................................................................................... 88

8.4.3 Two point calibration .........................................................................................................89

8.5 Automatic calibration setup........................................................................................................90

8.6 Calibration results ...................................................................................................................... 91

8.7 Calibration loggings ................................................................................................................... 91

8.8 Custom adjustment .................................................................................................................... 92

8.9 Temperature calibration ............................................................................................................. 92

Section 9 Maintenance and Diagnostics ..................................................................................... 93

9.1 Maintenance schedule ............................................................................................................... 93

9.2 Battery replacement................................................................................................................... 93

9.3 Fuse replacement ...................................................................................................................... 94

9.4 Cleaning and decontamination .................................................................................................. 94

9.5 Maintenance and diagnostics menu option................................................................................ 95

9.6 Maintenance and diagnostics - Menu overview......................................................................... 95

9.7 Reagent changes....................................................................................................................... 96

9.7.1 Adjust bottle volumes........................................................................................................ 96

9.7.2 Priming tubes ....................................................................................................................97

9.7.3 Bottles full.......................................................................................................................... 97

9.8 Calibration diagnostics...............................................................................................................98

9.9 Raw values ................................................................................................................................ 98

9.10 Test accessories ......................................................................................................................98

9.10.1 Hydraulics .......................................................................................................................99

9.10.2 Relays .............................................................................................................................99

9.10.3 Logical inputs ................................................................................................................100

9.11 Sensor reactivation ................................................................................................................ 100

9.12 Extended stop ........................................................................................................................ 101

9.13 Startup ...................................................................................................................................102

9.14 Software versions .................................................................................................................. 102

Section 10 Troubleshooting ......................................................................................................... 103

10.1 General faults.........................................................................................................................103

10.2 Detection of functional faults..................................................................................................106

10.3 Miscellaneous problems ........................................................................................................ 106

Section 11 Spare Parts and Accessories..................................................................................107

11.1 Accessories - Options - Maintenance kits.............................................................................. 107

11.2 Spare parts - In contact with sample...................................................................................... 108

11.3 Spare parts - In contact with cell or electrodes ...................................................................... 108

11.4 Spare parts - In contact with reagents or standard solution................................................... 109

11.5 Electronics ............................................................................................................................. 109

11.6 Additional hardware ............................................................................................................... 110

Section 12 Default Configuration................................................................................................111

12.1 User configuration table......................................................................................................... 111

Section 13 Reagent Preparation..................................................................................................115

13.1 Conditioning Reagent ............................................................................................................ 115

13.2 Standard Solutions.................................................................................................................115

13.3 Automatic Calibration Solution (10 ppm Na).......................................................................... 116

13.4 3M KCl ................................................................................................................................... 117

13.5 0.5M NaNO3 .......................................................................................................................... 117

3

Table of Contents

Section 14 Material Safety Data Sheets (MSDS)......................................................................119

14.1 Diisopropylamine (DIPA)........................................................................................................119

14.2 Potassium chloride.................................................................................................................122

14.3 Sodium chloride......................................................................................................................124

14.4 Sodium nitrate ........................................................................................................................126

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 © 2006-2013 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. [phone]
Fax [phone]

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. [phone]
Fax [phone]

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.

Table 1 Technical specifications

PERFORMANCE SPECIFICATIONS

Measuring range

Accuracy

Repeatability

Response time 0.1 to 10 ppb T(90%) = 180 secs
Electrode type pH glass electrode
Number of channels 1 channel
Interference phosphate 10 ppm Measurement variation less 0.1 ppb.
Sample temperature interference < 0.5% / °C

ENVIRONMENTAL REQUIREMENTS

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 Stabilization in 10 mins from 15°C to 30°C

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)

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

Power station / indoor / demineralized water plant or
instrumentation room

Non-cationic application: 6 to 10 pH
Cationic application: 2 to 10 pH

)

3

13

Specifications

MECHANICAL SPECIFICA TIONS

Maximum panel dimension

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 5x20 cartridge T2AL-250V following CEI127

Display

Analog outputs

Relays

Logic input

European standards

International standards cETLus

850 x 450 x 252.5mm [33.46 x 17.71 x 9.94in]
(H x L x D)

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

Last Cal Date, Historical, Concentration, Temperature,
Potential

Number: 4
4-20 or 0-20 mA (650 ohms)
Linear / Dual / Logarithm
Smart

1 x Relay (conc)
1 x Relay (conc)
1 x Warning
1 x System

Start/Standby
Remote AutoCal

STANDARDS

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.

09245=A=

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
1 With RS485
2 With Profibus

0 Standard
1 With AutoCal

Figure 1 Model identification matrix

Example:
09245=A=0021

• Analyzer model 9245 single channel, grab sample, manual calibration

• Standard version (0.01 to 10,000 ppb)

• Panel version

• With Profibus option

• With AutoCal option

15

Specifications

16

Section 3 Analyzer Overview

3.1 Overview

The Polymetron 9245 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

17

Analyzer Overview

3.2 Schematic process overview

The illustration below shows the major components of the analyzer.

Figure 2 Analyzer overview diagram

1 - Sample inlet flow adjustment 7 - Sample level detector 13 - Sodium ion-selective electrode
2 - Fast loop sample outlet 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

18

3.3 Presentation of the analyzer

3.3.1 Analyzer front panel

Analyzer Overview

Figure 3 Analyzer front panel

1 - User interface 4 - Door lock
2 - Overflow vessel 5 - Reagent shelf
3 - Measuring cell 6 - Frame for panel mounting

19

Analyzer Overview

3.3.2 Analyzer rear panel

20

Figure 4 Analyzer rear panel

1 - Local controller box 4 - Sample inlet valves
2 - Electrolyte reservoir 5 - Calibration canister
3 - Pump box 6 - Reactivation reagent canister

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 5 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.

Analyzer Overview

Figure 5 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

21

Analyzer Overview

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 9245 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 3-way valve.

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 09245=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 9245 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.

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 9245 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

up to pH 9.5 -

3

of 11.2.

target

ratio is used for each channel in order to minimize the DIPA consumption

22

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 47 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.

23

Analyzer Overview

3.6 Measurement process

The 9245 requires an on-line measurement time which 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 29). 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.

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 73) 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.

24

Figure 6 Rinsing process after a calibration, grab sample or sensor reactivation

3.7 Automatic calibration cycle

The following section gives an overview of the automatic calibration process. For details on
setting up and running this process, refer to the section entitled Calibration on page 85.

Analyzer Overview

Figure 7 Automatic calibration cycle

25

Analyzer Overview

This process calculates the slope and offset of the ISE sodium electrode and the reference
electrode. It is based on the measurement of the potential and temperature of three different
samples, two of which contain known concentrations of sodium:

• Measurement of a first sample of unknown concentration

• Measurement of a second sample of known concentration

• Measurement of a third sample of known concentration

The additions of known concentration are made to the overflow vessel which is partially emptied
to avoid any spillage. The volume of the overflow vessel has been factory defined during
preparation of the instrument. This parameter can only be modified by a qualified service
technician.

The sample to which the known additions will be made is measured. This measurement must be
stable and less than 1 per thousand of calibration solution concentration and becomes the
background point measurement P0 displayed on the analyzer.

The cycle is as follows:

1. Phase 1: The sample to which the known additions will be made is measured. This

measurement must be stable and less than 1 thousandth of the calibration solution
concentration. This becomes the background point measurement P0 displayed on the
analyzer.

2. Phase 2: The electrode is reactivated. This consists of injecting Sodium Nitrate into the

solution to maintain a high level of sodium measurement for a minimum of 5 minutes.

3. Phase 3: The measurement cell is rinsed. The overflow vessel is then refilled with fresh

sample.

4. Phase 4: The overflow vessel is drained slightly to allow enough room for the addition of the

first calibration solution.

5. Phase 5: The first calibration solution of known concentration is added and mixed with the

sample. The overflow vessel is drained into the measurement cell and the first concentration
measured and displayed as P1 on the analyzer.

6. Phase 6: The overflow vessel is rinsed and refilled with fresh sample.

7. Phase 7: The overflow vessel is drained slightly to allow enough room for the addition of the

second calibration solution.

8. Phase 8: The second calibration solution of known concentration is added and mixed with

the sample. The overflow vessel is drained into the measurement cell and the second
concentration measured and displayed as P2 on the analyzer.

9. Phase 9: The slope and offset are calculated and displayed. If the calculated slope and

offset values are within the acceptable limits they will be used for all future measurements.
Normal measurement is then resumed starting with a smart or fixed rinsing step.

26

3.8 Manual calibration cycle

The following section gives an overview of the manual calibration process. For details on setting
up and running this processes, refer to the section entitled Calibration on page 85.

Analyzer Overview

Figure 8 Manual calibration cycle

This process calculates the slope and offset of the ISE sodium electrode and the reference
electrode. It is based on the measurement of potential and temperature of two different samples
of known sodium concentration.

The concentration values of the two calibration solutions must be entered into the analyzer prior
to calibration (see Two point calibration on page 89). The lower concentration should be greater
than 50 ppb and the relationship between low and high concentration should be 10 or more. The
recommended low value is 100 ppb and the high value is 1,000 ppb.

The cycle is as follows:

1. Phase 1: The electrode is reactivated. This consists of injecting Sodium Nitrate into the

solution to maintain a high level of sodium measurement for a minimum of 5 minutes.

2. Phase 2: The measurement cell is rinsed.

3. Phase 3: The overflow vessel is rinsed and refilled with fresh sample.

4. Phase 4: The overflow vessel is drained, and the system waits for the operator to fill the

overflow vessel with the low value calibration solution.

27

Analyzer Overview

5. Phase 5: The overflow vessel is drained into the measurement cell and the first

concentration measured.

6. Phase 6: The overflow vessel is rinsed and then drained. The system waits for the operator

to fill the overflow vessel with the high value calibration solution.

7. Phase 7: The overflow vessel is drained into the measurement cell and the second

concentration measured.

8. Phase 8: The slope and offset are calculated and displayed. If the calculated slope and

offset values are within the acceptable limits they will be used for all future measurements.
Normal measurement is then resumed starting with a smart or fixed rinsing step.

3.9 Grab sample measurement cycle

The following section gives an overview of the grab sample measurement process. For details
on setting up and running this process, refer to the section entitled Grab sample on page 62.

Figure 9 Grab sample measurement cycle

The measurement cycle is as follows:

1. Phase 1: The electrode is reactivated. This consists of injecting Sodium Nitrate into the

solution to maintain a high level of sodium measurement for a minimum of 5 minutes (this
step can be skipped if time is more important than accuracy).

2. Phase 2: When reactivation has completed, the measurement cell is rinsed for 10 minutes

or, if the reactivation has been skipped then the overflow vessel is emptied and refilled with
the sample used for calibration.

3. Phase 3: The overflow vessel is drained, and the system waits for the operator to fill the

overflow vessel with the grab sample.

4. Phase 4: The overflow vessel is drained into the measurement cell and the sample

concentration measured.

5. Phase 5: The measurement value is displayed. Normal measurement is then resumed

starting with a smart or fixed rinsing step.

28

3.10 Analyzer outputs

The following tables shows the outputs (screen, analog, alarm relays and RS485) generated by
the analyzer during the various processes (measurement, grab sample, calibration and sensor
reactivation).

For the grab sample and calibration processes, see Automatic calibration cycle on page 25,

Manual calibration cycle on page 27, and Grab sample measurement cycle on page 28 for a

definition of each phase referred to in the table.

The terminology used in the tables is as follows:

• Frozen - output frozen at the last concentration value measured

• Actual - output shows the actual concentration value being measured

For the RS485 output, several variables are accessible:

• Address 0 - actual concentration value being measured

• Address 2, 4, 6, 8 - concentration value for channel 1 to 4 respectively

• Address 163 shows the analyzer status:

• 1 - number of channel

Analyzer Overview

• 5 - grab sample mode

• 10 - auto calibration mode

• 11 - manual calibration mode

• 13 - sensor reactivation mode

3.10.1 Sensor reactivation

Action Screen 4-20 mA Alarms

Frozen Frozen Frozen Frozen Adr 163=13

3.10.2 Standard measurement process

Action Screen 4-20 mA Alarms

Rinsing step Frozen Frozen Frozen Frozen

Updated during

Measurement Actual

last minute of

measurement.

Updated during

last minute of

measurement.

RS485

Address 0 Others

RS485

Address 0 Others

Address 2, 4, 6, 8:

Actual

Updated at end of

the cycle

3.10.3 Grab sample process

Action Screen

Phase 1
Phase 2
Phase 3
Phase 4
Phase 5 Actual Actual Actual

Conc. Other prog. Address 0 Others

Frozen Frozen

4-20 mA

Grab Sample

Event

Alarms

N/A

Frozen

RS485

Address 163=5

29

Analyzer Overview

3.10.4 Auto calibration process

Action Screen

Phase 1 Actual Actual
Phase 2
Phase 3
Phase 4
Phase 5 Actual Actual Actual
Phase 6
Phase 7
Phase 8 Actual Actual Actual
Phase 9 Frozen Frozen Frozen

Frozen Frozen Frozen

Frozen Frozen Frozen

3.10.5 Manual calibration process

Action Screen

Phase 1
Phase 2
Phase 3
Phase 4
Phase 5 Actual Actual Actual
Phase 6
Phase 7
Phase 8 Actual Actual Actual

Frozen Frozen

Frozen Frozen Frozen

4-20 mA

Conc. Other prog. Address 0 Others

Event

Calibration

4-20 mA

Conc. Other prog. Address 0 Others

Event

Calibration

Alarms

Actual Address 163=10

N/A

Alarms

Frozen

N/A

RS485

Address 163=13

Address 163=10

RS485

Address 163=13

Address 163=11

3.11 Available options

3.1 1.1 K-Kit (cationic)

For a high acidity water such as that from a cation exchanger outlet, the regular gaseous
conditioning is not sufficient to raise the pH to values superior to 10.3. The forced-gas
conditioning system (K-kit) is then needed.

The K-Kit option includes a gas pump with no moving parts, a power supply board, additional
hydraulics and full installation instructions.

For further information contact your local Hach Lange representative.

3.1 1 .2 Static heat exchanger system

A static heat exchanger system is available as an option. It comes complete with inlet and outlet
connectors (4/6mm tubing) and mounting (2 flanges and screws).

Very easy to install, and requiring no voltage supply, this compact (350 x 40mm) product
absorbs changes of heat even on samples flowing at 5 L/h per channel.

Specially designed for POWER applications, it has a high resistance to corrosion and deposits,
and allows incoming samples from 0 - 60°C to be released to the analyzer within its operating
range of 5 - 45°C.

For further information contact your local Hach Lange representative.

30

Section 4 Installation

The analyzer should only be assembled by qualified staff. Mains power should only be
connected once installation has been completed and checked.

4.1 Analyzer inspection and unpacking

The instrument has been factory tested and checked prior to shipping. We nevertheless
recommend that you perform a visual inspection in order to ensure that it has not been
damaged. Any marked packaging is a potential sign of damage that may not be immediately
visible. Keep all packaging in the event of claims.

4.2 Instrument preparation

Do not connect power prior to mounting and plumbing the instrument.

Personal injury hazard. Instruments or components are heavy. Use assistance to install or
move. Make sure that the wall mounting is able to hold 4 times the weight of the equipment.

WARNING

WARNING

CAUTION

Before installing the analyzer, think about the following:

• Place the analyzer close to the sample point. This will allow the response time to be reduced.

• The sample should be homogenous and representative.

• The temperature of the sample should be between 5 and 45°C.

• The pressure of the sample should be between 0.2 and 6 bar and remain relatively stable.

• The solution should be free of particles. The sample lines should be in PE/PTFE/FEP (4x6

mm).

• Avoid any location with a corrosive atmosphere or subject to liquid spills.

• Chose a dry and dust-free location.

• The ambient temperature of the analyzer should not exceed 45°C. If the temperature is

below 5°C, the analyzer should be installed in a heated cabinet (not provided by Hach
Lange).

31

Installation

4.3 Instrument mounting

Whether the instrument is to be mounted on a panel or wall, it is important to note that it must
be placed in an upright position with the transmitter at the top. It is recommended to use a
spirit level to ensure that the instrument is correctly positioned and not leaning to one side or
forward. This is essential to guarantee the accuracy of the analyzer.

4.3.1 Panel mounting

For the panel mount model, the dimensions of the panel and fixation holes are as follows:

CAUTION

32

Figure 10 Panel mount

All dimensions above are in millimeters [inches].

4.3.2 Wall mounting

Use the wall mounting kit to fix the instrument to the wall.

Use these to drill the four holes for fixing the instrument on the wall. The distance between the
two pieces is 460 mm.

Installation

Figure 11 Wall mount kit

CAUTION

It is extremely important to respect this gap of 460 mm to avoid bending the cabinet out of
shape while fitting.

33

Installation

4.4 Step-by-step installation

No intervention should be made on the instrument without first switching off the power.

The electrical installation should be carried out by duly qualified personnel. A supply voltage of
100-240 VAC is acceptable without changing the configuration. The power supply terminals can
be removed from their housing to make connection easier.

For safety reasons, it is imperative to respect the working procedure below:

• Use a three-wire power cable (live + neutral + earth), sized for supplying the required power.

• The instrument should be connected to the mains via a circuit-breaker or fuse whose value

should be less or equal to 20 A. It should be located in proximity and be identified.

• This connection should cut-off the live and the neutral when electrical problems occur or

when the user wishes to intervene inside the instrument. On the other hand, the earth
conductor should always be connected.

4.4.1 Mains power connection

1. Open the glass window and then open the panel to have access to the rear side of the

analyzer.

WARNING

34

2. Pass the power supply

cable through the cable
gland located at the back
left of the bottom of the
cabinet.

Installation

3. Open the I/O connection

box on the rear panel.

4. Unscrew the two fixing

elements...

35

Installation

5. ...and allow the I/O box to

rotate down.

6. Pass the mains power

cable through the back
end cable gland on the
transmitter enclosure.

7. Open the transmitter front

door.

36

8. Remove the metallic

shielding plate protecting
access to the main board.

Installation

9. Take the power supply

connector and note where
the earth, live, and neutral
must be connected.

10. Connect the power supply

cables to the connector...

37

Installation

11. ...and put the connector

back in place.

12. Replace the metallic

shielding plate.

38

4.4.2 RS485 connection

1. Connect the RS485

communication cable as
indicated.

Connection is the same
on the CPU board for
both the JBUS/MODBUS
and PROFIBUS options.

Installation

2. Close the transmitter

door.

39

Installation

3. Put the I/O box back in its

normal position.

4. Fix the I/O box back in

place with the 2 screws.

40

4.4.3 Input/Output connections

Installation

1. Analog output – Iout 0 is used for the current signals of the measurement. Other analog

outputs can be freely linked to different parameters like measurement, temperature – refer
to the section entitled User Setup on page 71 for details.

2. Relays – Rel 8 is linked to the system alarm and is normally energized. Rel 7 is linked to

the warning alarm. The position of the contact represented on the diagram above
corresponds to a state when the relay is not energized. See Alarms on page 76 for more
information on the relays.

3. Logical Inputs (2) – one input allows the analyzer to be put on standby by providing 1 dry

circuit which will then be closed to place the analyzer on standby until that circuit is
re-opened. The second input is to launch the remote calibration (same principle as sample
measurement by-pass).

• - In 2 (on J32) for remote calibration

• - In 7 (on J38) to put the analyzer on standby

4. Close the I/O box.

41

Installation

4.4.4 Sample tubes installation

• Sample inlet connections - 6 mm (or ¼'') in polyethylene or PTFE or FEP. If particulate

matter is present in the sample, pre-filtration is necessary. A filter should be inserted in the
sample line. One is available as an option. Use new pipes for all connections during
installation.

• Flow rate - 6 to 9 L/hour

•Pressure - 0.2 to 6 bars (8 to 100 psig)

• Sample acidity - Sample acidity should not be more than 300 ppm CaCO

3

• Temperature - Temperature must be between 5 to 45 °C

Note: For continuous monitoring of sample with a temperature between 5-10°C it is recommended that the
installation should include a static heat-exchanger system (see Accessories - Options - Maintenance kits on

page 107 for a list of part numbers).

At this stage of the installation, make sure that the flow valve is closed.

Connect the pipes by inserting them into the quick release connections found under the
sampling block.

Be sure that the sample line is correctly flushed before any connection to avoid particle injection
into the 9245 hydraulic system.

1. Connect the drain outlet.

2. Connect the sample inlet/outlets.

42

4.4.5 Reagents installation

1. Prepare the reagents according to Reagent Preparation on page 115. Install the reagent

canisters in their place and connect them to their respective tubes.

2. Install and connect the conditioning solution (diisopropylamine). The diagrams show an

analyzer for non-cationic applications. Analyzers for cationic applications have a small pump
installed above and to the left of the reagent canisters.

Installation

3. Install and connect the reactivation

solution (blue R label).

4. If you have this option, install and connect

the auto calibration solution (yellow CAL
label).

43

Installation

4.4.6 Magnetic stirrer installation

1. On the front of the panel,

remove the plastic bag
from the overflow vessel

2. Remove the magnetic

stirrer from the bag and
install it in the overflow
vessel

44

4.4.7 Reagents volume declaration

Note: As you will now be using the analyzer menus to input data, it may be useful to familiarize yourself with
the data entry procedures by reading the section entitled Data entry on page 53 of this manual.

1. Open the sample valve and check that there is no leakage in the hydraulic path.

2. Power on the analyzer.

3. Select the Menu option from the display.

4. Select MAINTENANCE/DIAG. from the main menu
and press Enter

Installation

5. Select the REAGENT CHANGES option and press
Enter

6. Set the BOTTLES FULL parameter to Yes and
press Enter.

7. Press Esc to return to the MAINTENANCE/DIAG.

menu.

45

Installation

4.4.8 Flow rate adjustment

1. From the MAINTENAN CE/DIAG. menu select
START UP and press Enter

2. First, the system automatically primes both the

calibration and reactivation tubes.

3. Check that there are no air bubbles in the reagent
tubes for reactivation and auto calibration.

4. The next step allows you to regulate the sample
flow rate on the measurement channel.

5. The analyzer automatically empties and refills the
overflow vessel to determine the flow rate which is
displayed on screen.

6. The flow rate should be 6 to 9 L/hour.

7. Using a screwdriver, regulate the channel’s sample

flow by turning counter-clockwise to increase the
flow rate or clockwise to decrease the flow rate.

8. The process is repeated until the flow is correctly
regulated for the channel. At this point select OK.

46

9. On completion, an Action completed message will
be displayed. Select Esc to exit.

4.4.9 Sample pH conditioning check

Note: At this stage, the electrodes should not have been installed.

4.4.9.1 Non-cationic applications

1. Install a calibrated pH sensor in the center position

of the measurement chamber which is normally
used for the ISE sodium electrode.

2. On the analyzer, press Start on the main menu to

start the measurement process.

3. Check that the pH value of the sample after

conditioning is greater than 10.5. If not, check the
quality of the conditioning product used.

Installation

4.4.9.2 Cationic applications

1. With a calibrated pH sensor, measure the pH of the sample outside of the analyzer.

2. Determine the gas injection time ratio depending on the sample pH. Enter this value into the

analyzer as described in Total gas/water ratio (cationic applications only) on page 73. The
standard values are listed below:

3. Install the same pH sensor in the center position of the measurement chamber.

4. On the analyzer, press Start on the main menu to start the measurement process.

5. Measure the pH in the conditioned sample to check if the pump ratios are efficient enough

to obtain a pH of around 11.0. If necessary, update the ratio to maintain a final constant pH
of 11.0 ± 0.2.

pH Tgas/Twater Ratio

2 180%

2.3 80%

2.6 50%

2.9 30%

3.5 15%

4.0 10%

47

Installation

4.4.10 Reference electrode installation

1. Remove the reference

sensor from its box.

2. Remove the plastic
reservoir from the bottom
(the storage solution is
KCl 3M) and install the
O-ring as shown.

3. With care, turn the bottom
electrolyte tube ferrule
with a maximum ¼ turn to
lock it.

4. Remove the plastic plug
on the entry port.

48

5. Install the reference

electrode in the extreme
left measurement
chamber.

6. Connect the reference
cable (the one without
the blue label on it) to the
reference electrode.

Installation

7. Connect the electrolyte

tube to the reference
electrode.

49

Installation

4.4.11 Sodium ion selective electrode installation

Note: It is critical to preserve the integrity of the sodium ion selective electrode as much as possible. This is
why this electrode must be installed at the very last moment after all other adjustments.

1. Remove the sodium ion

selective sensor from its
box.

2. Remove the plastic

reservoir from the bottom
(the storage solution is
standard tap water) and
shake gently (as you
would a thermometer) to
dispose of any bubbles.

3. Install the O-ring as

indicated right.

4. Install the ISE in the

center position of the
measurement chamber.

5. Connect the AS7 cable

(with the blue label) to the
electrode.

50

CAUTION

After the electrodes installation, it is very important that none of the electrode heads are
touching the bottom part of the measuring cell. An example of the electrodes correct position
is shown above.

4.4.12 Fill electrolyte reservoir

1. The electrolyte reservoir is

located at the back of the
analyzer.

2. Take the KCl electrolyte
bottle and insert the tip of
the tapered spout into the
reservoir inlet tube
(illustrated right) as far as
it will go but without
exerting any extra
pressure.

3. Squeeze on the bottle as
many times as necessary
to fill the reservoir to
about 3/4 of its capacity. If
you have any difficulty
filling the reservoir, raise
the spout of the bottle
very slightly to avoid an
air lock.

Installation

4. Using thumb and

forefinger, pump on the
electrolyte tube between
the reservoir and the
reference electrode to
remove any air bubbles
that may have formed.

5. If necessary, clean any
KCl drops from the
analyzer and the
reservoir.

51

Installation

4.5 Analyzer stabilization

At this stage the analyzer has been completely installed, but needs to run for a period of time to
stabilize.

1. Press Start on the main menu to start the measurement process.

2. Leave the system to run for a couple of hours before starting any calibrations.

4.6 Analyzer setup

After the analyzer has stabilized, the system and user parameters must be set, followed by an
initial calibration.

1. SYSTEM SETUP - see System Setup on page 65.

2. USER SETUP- see User Setup on page 71.

3. CALIBRATION - see Calibration on page 85 and launch a two point calibration.

Note: The complete calibration cycle will last around 1 hour. However, the instrument cannot be calibrated
until at least one complete measurement cycle has been successfully performed. An attempt to calibrate the
instrument before this will result in a “Not authorized” message being displayed.

52

Section 5 Operating Instructions

Note: All screen display examples in the following sections are shown as black on a white background for
reasons of clarity, and do not necessarily reflect the actual colors used on the instrument display.

5.1 Data entry

5.1.1 Function keys

The display panel of the 9245 has 5 function keys (illustrated below) to allow menu option
selection, field selection, and data entry options.

Figure 12 Function keys

• The Esc key cancels data input or goes back to the previous screen.

• The Enter key validates the input and goes on to the next step.

• The Up Arrow keys select the option displayed immediately above them on the screen.

When a screen requiring data entry is displayed, the first editable field is always highlighted (as
illustrated left in Figure 13 below). To select other fields on the screen, scroll through them by
pressing the Up Arrow function key under the Select option. As each field is selected, the data
element available for update is highlighted.

Figure 13 Field and menu selection

The same is also true when a menu is displayed (as illustrated right in Figure 13 above). In this
case, the first available option is always highlighted. Scroll to the required option by pressing the
Up Arrow function key under the Select option.

Data entry is effected in a variety of ways depending upon the characteristics of the data field
being accessed. The following examples show the different ways of entering data when
required.

53

Operating Instructions

5.1.2 Numeric fields

These fields require that the user enter one or more numeric values into a field. The type of field
determines the available input. In some fields only digits 0 through 9 would be available to
select whereas in other fields the decimal point and/or minus sign may also be available.

The highlighted field in the example left is a numerical
data element which requires input from the user.

As this is a date field, only digits 0 through 9 will be
available for selection.

For data elements such as these, press the function
key under either the Up Arrow or Down Arrow options
to initiate data entry.

The first digit will then be highlighted, and a new Right
Arrow option replaces the Select option at the bottom
of the screen.

Press the function key under the Up Arrow option to
increase the value of the field by 1.

Press the function key under the Down Arrow option to
decrease the value of the field by 1.

Press the function key under the Right Arrow option to
accept the currently displayed digit and move one digit
to the right (i.e. 5 in the example left).

Press the Enter function key to accept the data and
move to the next input field.

It is not necessary to enter data into each of the
available data elements that make up the data field.

For example, if it was required to simply change the
date from the 25/07/07 to 25/08/07, the following steps
are all that are required:

• Press the function key under the Right Arrow

option until the digit 7 is highlighted.

54

• Press the function key under the Up Arrow option

to increase the value of the field by 1 to 8.

• Press the Enter function key to accept the complete

data field (25/08/07) and move to the next data input
field.

5.1.3 Alphanumeric fields

These fields require that the user enter one or more alphanumeric values into a field. The type
of field determines the available input. In some fields only upper case alpha characters may be
allowed, in others upper and lower case alphanumeric characters my be allowed, etc.

Operating Instructions

In this example, a name is required to give to the
channel. The complete alphanumeric character set is
available to choose from, including upper and lower
case alpha characters.

Press the function key under either the Up Arrow or
Down Arrow options to initiate data entry.

The first character will then be highlighted, and a new
Right Arrow option replaces the Select option at the
bottom of the screen.

Press the function key under the Up Arrow or Down
Arrow option to scroll through the list of available
characters.

Press the function key under the Right Arrow option to
accept the currently displayed character and move to
the next character.

Press the Enter function key to accept the complete
field and move to the next data input field.

55

Operating Instructions

5.1.4 List element fields

This type of data entry is where a pre-defined list of available data values are available to the
user who must select the one which is applicable. Free-format text is not allowed.

The highlighted field in the example left is a data
element where there is only a limited number of valid
options (i.e. the seven days of the week).

For data elements such as these, press the function
key under the Up Arrow option to scroll forward
through the pre-defined list (in this example Tuesday,
Wednesday, Thursday...) or press the function key
under the Down Arrow option to scroll backward
through the list.

When the required list element is displayed press the
Enter function key to accept the data and move to the
next data input field.

5.1.5 Incremental value fields

These are fields where a value is displayed on the screen and the user has the option of
increasing or decreasing the value.

5.1.6 Data entry input errors

After entering data for a field, the system will verify the validity of the data. For example, if a date
of 41/12/07 is entered, the system will not accept it. If any field is found to be invalid, an
appropriate error message will be displayed at the bottom of the screen and the system reverts
back to the original value for that field.

In this example, the whole value, rather than an
individual digit, is highlighted.

Use the Up Arrow function keys under the plus or
minus symbols to increase or decrease the value by 1.

On completion press the Enter function key, to accept
the new value.

56

Press one of the Up Arrow function keys to acknowledge the error, and re-enter the data, or
Esc to acknowledge the error and exit the screen.

5.2 Measurement screens

5.2.1 Principal display

Operating Instructions

Figure 14 Principal measurement screen

An example of this display is given above. It shows the details of the current sample being
measured, both numerically and graphically.

The x-axis and y-axis of the graph are user-definable. The x-axis (horizontal) is defined by the
value set in the graph time base parameter (see Graph time base on page 76) and the y-axis
(vertical) is defined by the high and low values in the Analog Output 1 scale (see mA outputs on

page 80).

The options at the bottom of the screen will include three of the following:

•Hist - Selecting this option will show the last four measurements (see Figure 15 on page 58

as an example). The details of the current measurement are also displayed.

•Stop - Select this option to stop the current process on the analyzer. This could be a

measurement, verification or grab sample process. The option is only available when one of
these processes is currently running. You will be asked for confirmation (YES or NO) that you
want to stop the process.

•Start - Select this option to start the analyzer measurement process. This option is only

available if the analyzer has been stopped.

•Menu - This will bring up the main menu screen as illustrated in Figure 17 on page 59.

•Alarm - This option will appear flashing on the screen if any alarms have been set. Selecting

this option will take you to the alarms screen as illustrated in Figure 16 on page 58.

57

Operating Instructions

5.2.2 Historical display

This screen shows the last four sample measurements, the last grab sample measurement and
the last verification and gap measurements. Underneath these measurements, the actual
potential between the glass electrode and the reference electrode is displayed along with the
temperature.

Figure 15 Historical measurement screen

Select Main to return to the main measurement screen.

5.2.3 Alarms screen

Alarms S1-S4 relate to the four alarm outputs. This is followed by the warning alarm (W!) and
the system alarm (small graphic). The message against each alarm will indicate OK (no
problems encountered), INACTIVE (the alarm has been deactivated), or a message indicating
the reason for the alarm.

Figure 16 Alarm screen

58

For information on setting up the alarms, please refer to Alarms on page 76. In addition, Table 6

on page 79 lists all the possible error messages and indicates the type of alarm (warning or

system). If a manual alarm acceptance has been set up, select Enter to deactivate the alarms.
Select Hist. to go to the history display, or Esc to return to the measurement display.

5.3 Main menu

For a diagrammatic view of the complete menu structure, please refer to Menu structure

overview on page 64.

The main menu is accessible from any one of the measurement screens (as illustrated in

Figure 14 on page 57 for example). To access the main menu screen press the Up Arrow

function key under the Menu option.

Note: Access to the Main Menu will require a password if a PROGRAMMING password has been set (see

Passwords on page 68).

Operating Instructions

Figure 17 Main menu screen

The first option in the menu will always be highlighted by default. To scroll to the option required,
press the Up Arrow function key under the Select option.

Note: Scrolling past the last item in the list will take you back to the first item. It is not possible to scroll
upwards through any list.

Detailed information on each of the main menu options is available elsewhere in this manual as
follows:

• VERIFICATION - See section entitled Verification on page 60

• GRAB SAMPLE - See section entitled Grab sample on page 62

• CALIBRATION - See section entitled Calibration on page 85

• MAINTENANCE/DIAG. - See section entitled Maintenance and Diagnostics on page 93

• USER SETUP - See section entitled User Setup on page 71

• SYSTEM SETUP - See section entitled System Setup on page 65

59

Operating Instructions

5.3.1 Verification

This option allows you to verify the measurement using a
solution of known sodium concentration.

Concentration of the known solution should be higher than 20
ppb (100 ppb is recommended) to ensure a preparation step
in a range with lower risks of contamination.

Note: This is a measurement verification cycle only, and no
adjustments to parameters or calibration data will be made.

First enter the concentration of the verification solution in the
VALID. SOL field.

Select START to commence the process.

The first step of this cycle allows the reactivation of the
electrode. The message SENSOR ACTIVATION is displayed.

Select Yes to reactivate the sensor. Select No if time is more
important than accuracy.

The reactivation process is automatically followed by a rinsing
of the overflow vessel and measuring cell using the process
sample.

60

A progress bar (regularly refreshed) is displayed showing the
time remaining to complete the verification process.

Flow rate and measurements are also displayed.

Operating Instructions

Upon completion of the rinsing step, the analyzer is ready for
the first manual step in the cycle.

Place the lid of the overflow vessel on the side and pour
approximately 200 mL of the solution into the overflow vessel,
as prompted on screen. Manual introduction is complete when
the sample overflows at the back of the overflow vessel.

Place the lid back on top of the overflow vessel and select OK
to start the measurement.

The display switches back to the main measurement screen
and displays the measurement value.

The progress bar at the top of the screen monitors the
measurement time of the sample.

If you wish to abort the process at any time during the
measurement cycle, select Stop.

Once measurement of the solution is complete, the measured
value and time will be displayed against verif. s. This should
be almost identical to the value entered in the VALID. SOL
field previously.

The value displayed in gap, will be the percentage difference
between the concentration of the verification solution entered
in the VALID. SOL field, and the concentration measured by
the instrument. If this value is too high, then a calibration of
the analyzer is recommended.

Once the cycle is complete, the analyzer automatically reverts
back to standard measurement mode.

Select Main to go back to the main measurement screen.

61

Operating Instructions

5.3.2 Grab sample

Note: It is recommended that the grab sample should have a concentration of > 10 ppb and should be at
the same temperature as during calibration for better accuracy. Under these conditions, measurement with
manual introduction gives 5% accuracy from 10 ppb to 10 ppm at a temperature which is within ± 5 °C of the
temperature during calibration.

Similar to the verification process, this option allows
measurement of a sample of your choice.

Before starting this process, ensure you have a sample of
approximately 200 mL to measure.

The first step of this cycle allows the reactivation of the
electrode. The message SENSOR ACTIVATION is displayed.

Select Yes to reactivate the sensor. Select No if time is more
important than accuracy.

The reactivation process is automatically followed by a rinsing
of the overflow vessel and measuring cell using the process
sample.

A progress bar (regularly refreshed) is displayed showing the
time remaining to complete the process.

Flow rate and measurements are also displayed.

Upon completion of the rinsing step, the analyzer is ready for
the first manual step in the cycle.

62

Place the lid of the overflow vessel on the side and pour
approximately 200 mL of the solution into the overflow vessel,
as prompted on screen. Manual introduction is complete when
the sample overflows at the back of the overflow vessel.

Place the lid back on top of the overflow vessel and select OK
to start the measurement.

Operating Instructions

The display switches back to the main measurement screen
and displays the measurement value.

The progress bar at the top of the screen monitors the
measurement time of the sample.

If you wish to abort the process at any time during the
measurement cycle, select Stop.

Once measurement of the sample has completed, the
measurement value and time will be displayed against grab s.

Once the cycle is complete, the analyzer automatically reverts
back to standard measurement mode.

Select Main to go back to the main measurement screen.

63

Operating Instructions

5.4 Menu structure overview

64

Section 6 System Setup

Before attempting to setup the analyzer, ensure that you have read and understood how to
enter and update data fields as described in the section entitled Function keys on page 53.

Press the Up Arrow function key under the Menu option on
the measurement screen to display the Main Menu.

Access to the Main Menu will require a password if a
PROGRAMMING password has been set (see Passwords on

page 68).

The password is a 4-digit numeric field. Enter the value.
Press the Enter function key to accept and validate the

password.

If no password has been set, or once a valid password has
been entered, then the Main Menu will be displayed.

Press the Up Arrow function key under the Select option to
scroll through the menu until you reach the SYSTEM SETUP
option, then press the Enter function key.

The System Setup Menu is displayed.

65

System Setup

6.1 System setup - Menu overview

6.2 Date and time

Figure 18 System setup menu

Select the DATE/TIME option to access the date/time
sub-menu.

This option allows you to set up the system date and time.
Scroll to the required day and press the Enter function key.

Enter the day, month, and year.

66

Enter the time in HH:MM:SS format (24 hour clock).
On completion press Esc to return to the main System Setup

menu.

6.3 Display options

System Setup

Select the DISPLAY option to set up the display parameters.

Select the LANGUAGE, CONC. UNIT and TEMPERATURE
UNIT fields in turn, and set your preferences by scrolling
through the available options (listed in Table 2 below).

Language

Concentration Units

Temperature Units

Table 2 Display options

Value Description

GB English

D German

Sp Spanish

I Italian

F French

µg-mg/L Micrograms - Milligrams / Liter

ppb/ppm Parts per Billion / Parts per Million

°C Degrees Celsius
°F Degrees Fahrenheit

67

System Setup

6.4 Passwords

Select the PASSWORDS option to set passwords for access
to programming, calibration and system setup options.

By default all passwords are set to 0000.

Each password is a 4-digit numeric field. Enter the required
value for each of the three passwords. A value of 0000
signifies no password is required to gain access to those
menu options.

6.5 Default values

Select the DEFAULT VALUES option to erase all the
previously set user parameters and load the default values
(refer to Default Configuration on page 111 for a list of all the
default values).

A warning message is displayed and confirmation of this
action is required.

To exit from the screen without loading the default values,
press the Esc function key.

To load the default values, select the Yes option.

A number of informational screens will be displayed during the
process.

68

When the process is complete, the display reverts to the
measurement screen.

6.6 Adjust mA output

System Setup

Select the ADJUST mA OUTPUT option to access the
analyzer’s analog output parameters. These can be set to
0-20 mA or 4-20 mA (see details on how this is done in mA

outputs on page 80).

Each mA output can be individually calibrated on 2 points.

Adjustments should be made based on accurate readings
from a multimeter.

You have the option to adjust any of the six available outputs.
The process is exactly the same for each of the outputs.

6.7 Factory settings

Select the mA output you wish to change to display the next
screen.

Ensure the multimeter is connected to the selected output.

The option to increase or decrease the low end value (0 mA
or 4 mA depending on your setting) is displayed.

Change the value up or down by selecting the Minus or Plus
indicators at the bottom of the screen.

On completion press the Enter function key and the display
changes to 20 mA.

Enter the adjustment value in the same way as for the low
end value. On completion press the Enter function key, and
the display reverts back to the main ADJUST mA OUTPUT
screen, to allow you to select the next output to adjust.

This option is reserved for qualified Hach Lange service
personnel.

If you believe that changes to the settings may be required,
please contact your local Hach Lange representative.

69

System Setup

70

Section 7 User Setup

Before attempting to setup the analyzer, ensure that you have read and understood how to
enter and update data fields as described in the section entitled Function keys on page 53.

The default and available settings for these options are listed in Default Configuration on

page 111. For easy reference, it is recommended that once the user setup process has been

completed, your specific settings should be logged in this table.

Press the Up Arrow function key under the Menu option on
the Measurement Screen to display the Main Menu.

Access to the Main Menu will require a password, if a
PROGRAMMING password has been set (see Passwords on

page 68).

The password is a 4-digit numeric field. Enter the value.
Press the Enter function key to accept and validate the

password.

If no password has been set, or once a valid password has
been entered, then the Main Menu will be displayed.

Press the Up Arrow function key under the Select option to
scroll through the menu until you reach the USER SETUP
option, then press the Enter function key.

The User Setup Menu is displayed.

71

User Setup

7.1 User setup - Menu overview

72

Figure 19 User setup menu

7.2 Measurement

7.2.1 Targeted pH (non-cationic applications only)

If the analyzer has been set up for non-cationic applications,
the screen illustrated left is displayed.

Select the pH option and enter the target pH value for your
application. The measured pH value of the sample in the
measuring cell should be within ±0.2 pH of the target.

7.2.2 Total gas/water ratio (cationic applications only)

User Setup

7.2.3 Measure steps

If the analyzer has been set up for cationic applications, the
screen illustrated left is displayed.

Enter the ratio of gas to water to minimize the DIPA
consumption. This is part of the installation procedure and is
explained in more detail in Sample pH conditioning check on

page 47.

Select the MEASURE STEPS option to set up the
measurement timings.

The measurement and rinse processes are explained in more
detail in Measurement process on page 24. Please ensure

you have read this before entering any of the measure
step parameters.

The on line measurement time defines the measurement time
of the sample and how often the measurement values are
stored in memory. It is recommended to leave this time at the
default value of 10 minutes.

If smart rinsing is required after a calibration, grab sample or
sensor reactivation, set this parameter to Yes and define the
maximum rinse time.

73

User Setup

7.2.4 Reactivation frequency

Select the ACTIVAT. FREQ option to set the time period
between electrode reactivation. When this time period
expires, the electrode is reactivated automatically with an
injection of a small amount of reactivation solution.

Set the reactivation mode to either a Frequency or a fixed
date.

If set to frequency, the recommended time period is 24 hours
so that the electrode is reactivated on a daily basis.

Note: If this value is set to zero, then no electrode reactivation will
take place during the calibration process and as such the calibration
may be inaccurate. It is highly recommended to set this parameter to

24.

If set to a fixed date, define the day and time of the week
when reactivation takes place. Set the day of the week to an
asterisk if reactivation is not to take place on that day.

When the days have been defined, set the time in HH:MM:SS.

In the example screen shown left, reactivation will occur
automatically every Monday, Wednesday and Friday at 3
o’clock in the afternoon.

74

7.2.5 Datalogger setup

User Setup

This option allows you to view data held in the analyzer’s
internal memory.

Select the VIEW DA TA option to display the requested data.

All information matching the parameters selected in the VIEW
SETUP option is displayed on the screen.

If the data covers more than one screen, an Arrow key will be
displayed at the bottom. Use this key to scroll through the
data.

Select the VIEW SETUP option to define the parameters for
the data you wish to view.

The FROM data field is the date (DD/MM/YY) from which you
want to start viewing data.

The AT data field is the time (HH:MM:SS format) from which
you want to start viewing the data.

Set the CH field to All or Channel 1 to view data.
If you wish to see the ALARMS information (both system and

warning alarms), select Yes in this field, or No if alarm
information is not required.

75

User Setup

7.2.6 Graph time base

7.3 Alarms

For graphical displays, enter the number of hours as the base
line for the graph. This can be 4, 8, 12, 16, 20 or a 24 hour
period.

Select the ALARMS option to set up the parameters for all the
alarms including the system and warning alarms.

Select the alarm to set up.

76

7.3.1 Alarms 1 and 2

User Setup

Table 3 Alarms 1 and 2 parameters

Value Description

Limit

Mode

Attributes Channel 1 Defines the channel number on which the alarm is triggered

Direction

Delay nnn seconds The delay (in seconds) before the alarm is activated

Hysteresis nn% Hysteresis %

Relay

Sample flow Trigger the alarm when the sample flow rate is too low

Active channel

None Alarm not required

Limit nnnn Define the limit when the alarm should be triggered

Up Trigger alarm when measurement is above the limit
Down Trigger alarm when measurement is below the limit

N.O. Normally open
N.C. Normally closed

Trigger the alarm when the measurement is above or below a
pre-defined limit

Trigger the alarm when the channel is active i.e. during the
measurement cycle

Depending on the mode set, a different screen will be
displayed.

The example left shows the Limit mode screen.

The example illustrated indicates that alarm number 2 is set
up on Channel 1, and the alarm is triggered after a delay of 15
seconds when a measurement of 21.00 ppm is exceeded.

With the mode set to either Active Channel or Sample Flow,
you only have the possibility of setting the relay, as illustrated
left.

77

User Setup

7.3.2 Warning alarm

Table 4 Warning alarm parameters

Value Description

Alarm

Accept

Relay

Yes Activate the warning alarm
No Deactivate the warning alarm
Manual When the alarm is triggered, turn it off by pressing the Enter function key

Auto

N.O. Normally open
N.C. Normally closed

When the alarm is triggered, it will turn itself off only when the reason for the
alarm being triggered is no longer valid

Set the parameters as required (see explanations in Table 4
above).

7.3.3 System alarm

Alarm

Relay

Table 5 System alarm parameters

Value Description

Yes Activate the system alarm
No Deactivate the system alarm
N.O. Normally open
N.C. Normally closed

Set the parameters as required (see explanations in Table 5
above).

78

7.3.4 System and warning alarm table

The following table lists the different system and warning alarms:

Table 6 System and warning alarms

Message Description Category

User Setup

Reset measure mod. Reset the measure module
Reset LC module Reset the local controller module
LC Error Local controller module error
Err. measure mod. Measure module error
Comms error Communication error
Temp > 45°C (113°F) Temperature too high
Temp < 5°C (45°F) Temperature too low
Measure error Measurement error
Meas.time over Measurement cycle time too long
Cal.time over Calibration cycle time too long
Flow x < min Not enough sample
No condit. No sample conditioner (< 50 mL)
Channel inhib. The sample measurement is by-passed
Cal. sol < 100 mL Calibration solution level low
Electro. < 10 mL Electrolyte volume level low
Activ. sol. < 100 mL Reactivation solution level low
Condit. < 100 mL Conditioning solution level very low
P0 too high Base measurement P0 is too high
P2 < 5 x P1 2nd point calibration < 5 times 1st point
Slope drift Slope over tolerance
Offset drift Offset over tolerance
Stabilize error Stability criteria for accuracy not reached
Sample x < C Sample concentration x is below threshold C
Sample x < 0 ppb Sample concentration x is negative
Sample x > 1000 ppm Sample concentration is too high

System

System
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning

System
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning

79

User Setup

7.4 mA outputs

Select the mA OUTPUTS option to set up the parameters for
all the analog outputs.

7.4.1 Outputs 0 to 3

Attribute

From the list available, select the mA output you wish to set.

Table 7 Analog output parameters

Description

Choose the attribute that triggers the analog output:

• Measurement channel

• Temperature

• Current (mV)

Note: The attribute variable cannot be applied to Output 0, which is reserved for the
continuous live output signal.

Type Choose either a 0-20 mA or 4-20 mA analog output

Mode

Select between linear, dual or logarithm (see graph in Figure 20 on page 81). This
parameter is only selectable if the attribute is set to a measurement channel.

80

Low The value corresponding to the low end of the scale

Middle The value corresponding to the mid-point of the scale (only available in dual mode)

High The value corresponding to the high end of the scale

Figure 20 Linear and dual slopes

User Setup

Note: Output 1 should always be assigned to the measurement channel (as illustrated above). The low and
high values will be the values on the y-axis of the graphical display on the main measurement screen (see

Figure 17 on page 59).

7.4.2 Event indication

The screen illustrated left shows the Linear mode.

As shown, an analog output will be activated on a
measurement. The lower end of the scale will be 0 mA on a
value of 1 ppm and the high end of the scale will be 20 mA on
a value of 12 ppm.

The difference in display between this Linear mode and the
Dual mode, is that an extra field (MIDDLE) is required in
addition to the LOW and HIGH values.

Select the EVENT INDICATION option in the mA Outputs
menu to display the options available for event setting.

Select the option for which you want to set an event.

81

User Setup

7.4.3 Test

Define the attribute for the event. This is one of the 6 mA
outputs (0 to 3) or None.

The MODE can be either a Preset val or Frozen.

If a preset value is chosen, you will be required to enter the
value of the analog output that will be forced, when that event
occurs.

In the illustration left, as FLOW3 < MIN was the event chosen,
then when then the flow rate drops below the minimum
allowed, a value of 6 mA will be forced on analog OUTPUT 2.

This option allows you to enter a value into the mA field.

7.5 RS485 (or PROFIBUS)

Note: If the PROFIBUS option has been installed, then the menu option will show PROFIBUS rather than
RS485, and the PROFIBUS parameters will need to be installed.

Press the Enter function key to force this value on all the
analog outputs. The value can then be verified with the use of
a multimeter connected to the analyzer.

Select the RS485 option to set up the parameters for the
communications protocol.

An RS-485 communications interface card can be purchased
as an option with a communications protocol of
MODBUS-JBUS.

82

Table 8 Communications parameters

Device N. The number of the Monec device (0-33) RS485 and PROFIBUS

Baud

Parity Odd, even, or no Only required for RS485

Stop Bit 1 or 2 Only required for RS485

Swap Word

Transmission speed (600, 1200, 2400, 4800, 9600 or

19200)

Yes or No. Yes will reverse the order of the data
transmitted

Only required for RS485

RS485 and PROFIBUS

7.6 Sample channels

User Setup

Enter the parameters as described in Table 8 on the previous
page.

Press the Enter function key to accept each data element.
On completion, press the Esc function key to return to the

user setup screen.

7.6.1 Channel activation

Select the SAMPLE CHANNELS option to set up the
parameters for the sample channels.

These options allow the activation or deactivation of the
measurement channels, and the assignment of a name to the
channel.

Measurements are only taken on active channels.

As this is a single channel analyzer, the number of channels is
set to 1.

Using the Up and Down Arrow keys, define whether the
channel is active (Activ) or inactive (Inactiv).

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User Setup

7.6.2 Sequence

7.6.3 Channel names

For this version of the analyzer (single channel), samples can
only be analyzed on channel 1. Therefore, the default
sequence (as illustrated left) should be left as is.

Define the name of the channel with free-format alphanumeric
text up to a maximum of 8 characters.

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Section 8 Calibration

8.1 General

Before attempting to calibrate the analyzer, ensure that you have read and understood how to
enter and update data fields as described in the section entitled Function keys on page 53.

Note: The instrument cannot be calibrated until at least one complete measurement cycle has been
successfully performed. An attempt to calibrate the instrument before this will result in a “Not authorized”
message being displayed.

In order to obtain accurate measurement results, the analyzer should be calibrated on a regular
basis. Two basic methods of calibration are available:

• Automatic calibration - Parameters can be set up so that the analyzer will perform a

calibration automatically on pre-defined days at a pre-defined time (see Automatic calibration

setup on page 90). This type of calibration is always done using known calibration solution

concentrations.

• Manual calibration - The user can manually perform a calibration on an ad-hoc basis.

Note: Before starting a calibration It is very important to ensure that the Reactivation Frequency
parameter (see Reactivation frequency on page 74) is greater than zero. If set to zero, the electrode
reactivation process will not take place during calibration and as such the measurement results may well be
out of limits.

To access the calibration menu, select CALIBRATION from the main menu and press the Enter
function key.

8.2 Calibration solution concentrations

Important Note: The maximum concentration value for any calibration solution cannot be
greater than 2000 ppm. Any value superior to this is outside the analyzer specifications and

cannot be processed.

Manual calibration

For a manual calibration, the calibration solutions must be between 100 ppb and 2000 ppm
and must respect the following rules:

• LOW CAL SOL must be ≥ sample concentration of Na

• HIGH CAL SOL = (LOW CAL SOL x 10)
Example 1: sample concentration of Na

→

LOW CAL SOL = minimum value = 100 ppb Na

→ HIGH CAL SOL = (100 ppb x 10) = 1000 ppb Na

Example 2: sample concentration of Na

→

LOW CAL SOL = ≥ sample concentration of Na

→ HIGH CAL SOL = (500 ppb x 10) = 5000 ppb Na

Note: The values LOW CAL SOL and HIGH CAL SOL must be entered into the system (see One point

calibration on page 88 or Two point calibration on page 89).

Automatic calibration

For an automatic calibration, the calibration solution must be between 10 ppm and 2000 ppm
and must respect the following rules:

+

= 20 ppb

+

= 450 ppb

+

and a minimum of 100 ppb

+

+

+

= 500 ppb Na

+

+

• CAL SOL minimum = 10 ppm

• CAL SOL = (sample concentration of Na
Example 1: sample concentration of Na

→

CAL SOL = minimum value = 10 ppm Na

Example 2: sample concentration of Na

→

CAL SOL = (1 ppm x 1000) = 1000 ppm Na

Note: The value CAL SOL must be entered into the system (see Automatic calibration setup on page 90).

+

x 1000)

+

= 0.1 ppb

+

+

= 1 ppm

+

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Calibration

8.3 Calibration - Menu overview

8.4 Start calibration

8.4.1 Calibrate known addition

Figure 21 Calibration menu

Select the START CALIBRATION option to calibrate the
analyzer manually.

Select the CAL.KNOWN ADDITION option to calibrate the
analyzer by mixing the sample with a known concentration of
calibration solution.

86

The concentration of the calibration solution is defined in

Automatic calibration setup on page 90.

The instrument first checks that the volume of calibration
solution remaining is enough. If not, a warning alarm is
activated and the instrument returns to normal measurement
with the original parameters.

Calibration

If the volume of solution is OK, the background point
measurement (P0) to be used as the base measurement
value is taken. This is the measurement against the sample
before any additions of the calibration solution have been
made.

A progress bar is displayed showing the progress to date and
approximate time remaining.

The instrument waits for a stable measurement (a variation of
less than 1 mV per minute) or for a maximum of 10 minutes.

The measurement must be stable and less than 1 per
thousand of the calibration solution concentration, otherwise
the instrument returns to normal measurement with the
original parameters. Provided the measurement is OK, the P0
measurement details are displayed on screen.

If the reactivation frequency parameter is not zero (as is highly
recommended), the electrode will be reactivated.

When the reactivation process is complete, the overflow
vessel is rinsed to remove all traces of sample.

After rinsing, the overflow vessel is re-filled with sample plus
2mL of the calibration solution.

The sample is then measured and the details displayed
against P1.

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Calibration

When the measurement is stable, the details are displayed at
the top of the screen against measurement P1.

The overflow vessel is then rinsed and re-filled with sample
plus 20mL of the calibration solution.

This sample is then measured and the details displayed
against P2.

Once the final measurement is stable, the offset and slope for
this calibration are calculated.

The default values of the offset and slope are displayed along
with the calculated values for the last and current calibration.

A message is displayed indicating the success or failure of the
calibration.

8.4.2 One point calibration

For the details on how this success or failure condition is
determined, and how to proceed, see the description in

Calibration results on page 91.

Select the MAN.OFFSET CAL option to start the one point
calibration process.

This process requires that a calibration solution of known
sodium concentration is available.

Refer to Calibration solution concentrations on page 85 for
information regarding the concentration of the calibration
solution.

If necessary, enter the concentration of the calibration
solution, and select START to initiate the calibration process.

88

Then, provided the reactivation frequency parameter is not
zero (as is highly recommended), the electrode is reactivated.

On completion this is followed by a rinsing of the overflow
vessel.

Calibration

When prompted, fill the overflow vessel with the calibration
solution and select OK to start the measurement.

The calibration solution is measured and the results
displayed.

Once the final measurement is stable, the offset for the
calibration is calculated.

The success or failure screen is then displayed (see
examples in Calibration results on page 91).

8.4.3 Two point calibration

Select the MAN.OFFSET+SLOPE CAL option to start the two
point calibration process.

This process requires that two calibration solutions of known
sodium concentrations are available.

Refer to Calibration solution concentrations on page 85 for
information regarding the concentrations of the calibration
solution.

If necessary, enter the concentrations of the calibration
solution, and select START to initiate the calibration process.

Then, provided the reactivation frequency parameter is not
zero (as is highly recommended), the electrode is reactivated.

On completion this is followed by a rinsing of the overflow
vessel.

The process is then very similar to the one-point calibration
above, except after the instrument measures the low value
calibration solution, the overflow vessel will be rinsed and you
will be asked to fill it with the high value calibration solution.

The success or failure screen is then displayed (see
examples in Calibration results on page 91).

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Calibration

8.5 Automatic calibration setup

Select the AUTO. CAL. SETUP option to access its sub-menu
and set the calibration parameters.

This allows the analyzer to be automatically calibrated at
pre-defined and regular intervals.

The process is the same as described in Calibrate known

addition on page 86 except it is initiated automatically at the

pre-defined time.

Turn the automatic calibration on or off by selecting Yes or No
as appropriate.

Note that even if this is set to Yes, it is still possible to
calibrate the analyzer manually if required.

CAL.SOL defines the concentration of the calibration solution.
Refer to Calibration solution concentrations on page 85 for
information regarding the concentration of the calibration
solution.

MODE can either be set up to a fixed date or to a specified
Frequency.

If the mode is set to fixed date, enter the day(s) of the WEEK
when the calibration will be performed. Set the day to an
asterisk to skip that day.

Set the HOUR field (HH:MM:SS format on a 24 hour clock) to
the time the automatic calibration should start.

In the illustration left, a calibration is set to start on a fixed
time scale and will begin every Monday, Wednesday and
Friday at 19:30 in the evening.

If the mode is set to frequency, then the week and hour data
fields will be replaced by a TIME PERIOD field. Enter the
calibration frequency in hours into this field.

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8.6 Calibration results

After the slope and offset have been calculated, the default parameters, last calibration details
and current calibration details are displayed, along with a “Calibration ok” or “Calibration
error” message.

The criteria for accepting or rejecting the calibration is as follows:

• The slope must be within ± 10% of the standard slope

• The offset must be within ± 59 mV from the reference point

If the calibration is accepted, the parameters are updated and the instrument returns to the
normal measurement mode after a short delay.

If the calibration is rejected an alarm is set and the parameters remain unchanged. After a short
delay the analyzer returns to the normal measurement mode.

For details of the calibration results, select the calibration loggings option as described below.

8.7 Calibration loggings

Calibration

Select the CALIBRATION LOGGINGS option to view
historical information about previous calibrations.

The screen will list the following information about previous
calibrations:

• Date and time.

• Whether the calibration was automatic or manual.

• The values of the slope and offset.
Use the Arrow key to scroll through the data.

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Calibration

8.8 Custom adjustment

8.9 Temperature calibration

Where the analyzer displays values that are slightly above or
below the expected value, the CUSTOM.ADJ option can be
used to manually adjust the measurement value.

Enter a positive or negative value which will be added to the
measurement value.

This option can only be used to make minor adjustments. The
allowable adjustment value is between -0.1 ppb and +0.1 ppb.

If the displayed and expected values differ significantly, the
analyzer should be recalibrated.

Select the TEMPERATURE CALIB. option to calibrate the
temperature electrode.

The measured temperature reading is displayed in the raw
temp field.

Take a temperature reading with a certified thermometer and
press OK to continue.

Then enter this temperature reading into the CAL.TEMP. field.
Press OK to calibrate.

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Section 9 Maintenance and Diagnostics

Periodic maintenance will ensure accurate and consistent analysis results. Verify the levels of
the calibration solution and reagents and refill where necessary.

9.1 Maintenance schedule

The following table shows the suggested maintenance schedule for the 9245 Sodium Analyzer.
Selection of parts for preventive maintenance is detailed in Accessories - Options - Maintenance

kits on page 107.

Table 9 Maintenance schedule

Daily Weekly Monthly

Verification
Calibration
Electrode reactivation
Temperature calibration
Refill calibration solution
Refill reactivation solution
Refill electrolyte solution
Electrodes manual cleaning

(with paper/tissue)
Conditioning solution

(non-cationic applications)
Conditioning solution

(cationic applications)

Solenoid valves

The following items are performed by the Hach Lange service group

System check-up
External audit X

X X

Refer to DIPA consumption on page 23 for an indication on
how often the conditioning solution will need to be changed.

X X

X X X

Every 3
Months

Every 6
Months

X X
X X
X X

X X

X X

Yearly

Every 2

Years

X X

X X

X

As

Needed

X

9.2 Battery replacement

The transmitter is delivered with a CR1220 (3V) lithium battery included to safeguard the time
function in the instrument when not powered up. Should this internal battery malfunction or
require replacement it must be replaced with exactly the same battery type CR1220 (3V) UL
Certified (compulsory VARTA, RENATA or MATSUSHITA).

There is a risk of explosion if the replacement battery does not correspond to the correct
model as indicated above. Do not throw away used batteries, but send them to a local
recycling center.

WARNING

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Maintenance and Diagnostics

9.3 Fuse replacement

The following illustration shows the position of the fuse, which is located next to the mains
connectors on the power supply board under the shielding plate.

Two replacement fuses are supplied with the instrument and these must be used to replace
faulty or blown fuses.

If for any reason these replacements are no longer available, only the following alternatives
should be used:

• JDYX2, LITEFUSE, type 213, rated 2 AT, 250 VAC

• JDYX2, SIBA, Type 179120, rated 2 AT, 250 VAC

• JDYX2, SCHURTER, Type FST, rated 2 AT, 250 VAC

If there is any difficulty in obtaining these replacement fuses, please contact your local Hach
Lange representative for advice and assistance.

9.4 Cleaning and decontamination

The analyzer does not normally require any cleaning or decontamination. The internal cycle is
only in contact with clean, pure water.

If needed, clean the exterior of the instrument with a moist cloth and a mild soap solution. Never
use cleaning agents such as turpentine, acetone or similar products to clean the instrument,
including the display and any accessories.

Figure 22 Location of the fuse

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9.5 Maintenance and diagnostics menu option

There are a number of maintenance and diagnostic procedures that can be performed using the
software. These options can be found in the MAINTENANCE/DIAG. menu option of the main
menu, and are explained in detail in the rest of this section.

The maintenance and diagnostics screen gives a list of
maintenance procedures.

Select MAINTENANCE/DIAG. from the main menu to display
the maintenance and diagnostics screen.

9.6 Maintenance and diagnostics - Menu overview

Maintenance and Diagnostics

Figure 23 Maintenance and diagnostics menu

95

Maintenance and Diagnostics

9.7 Reagent changes

Note: The conditioning reagent and electrolyte consumption are approximate measurements, so a
discrepancy between measurement and actual consumption may occur. The conditioning solution
consumption has been measured for a pH of 11.2 at an ambient temperature of 25°C.

For the alarm levels for the reagents, please refer to the table in System and warning alarm

table on page 79.

This procedure is applicable to each change of reagent
solution. It allows the regulation of the volumes of solutions in
the bottles.

The analyzer consistently checks the consumption of these
solutions, triggering an alarm when these levels get too low.

This option must be selected each time a solution is refilled or
changed to reset the measurement parameters.

9.7.1 Adjust bottle volumes

Select the ADJUST BOTTLE VOLS. option to set the reagent
volumes.

This option should be used to set the default values of
reagents or when bottles are being used that are not full (see

Bottles full on page 97).

Enter the volumes for the conditioning solution, reactivation
solution, calibration solution and electrolyte in milliliters.

Press Select to move from one field to another to keep the
value displayed, or press Enter on completion of a field to
move to the next.

Press the Esc function key on completion.

96

9.7.2 Priming tubes

Maintenance and Diagnostics

After refilling the bottles (reference electrolyte, calibration
solution and reactivation solution) and/or after exchanging the
empty bottle of conditioning reagent with a new one, select
the PRIMING TUBES option.

This will set off the process to purge and refill the tubes.

A progress bar is displayed while the process executes.

9.7.3 Bottles full

Press the Esc function key at any time to abort the process
and return to the menu.

If the bottles of reagent are full, select Yes and the default
values for the volumes will be set. These values can be
viewed and modified by selecting the ADJUST BOTTLE
VOLS. option in the menu.

If you select No to this option, you will manually have to enter
the correct values using the ADJUST BOTTLE VOLS. option.

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Maintenance and Diagnostics

9.8 Calibration diagnostics

9.9 Raw values

This option is used by after sales service technicians to verify
that the last calibration was working correctly.

9.10 Test accessories

This option is used by after sales service technicians to verify
that the electrodes are functioning correctly.

This option allows you to check that a number of accessories,
as well as the alarm relays and logical inputs are functioning
correctly.

98