jenway 3520 User manual

Instruction Manual
352 050/REV B/01-17
pH/mV Temperature Meter
Model 3520

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Safety
Please read this information carefully prior to installing or using this equipment.
1. The unit described in this manual is designed be operated only by trained personnel. Any
adjustments, maintenance and repair must be carried out as defined in this manual, by a
person qualified to be aware of the hazards involved.
2. It is essential that both operating and service personnel employ a safe system of work, in
addition to the detailed instructions specified in this manual.
3. Other than for those items defined in the maintenance procedures herein there are no
user serviceable items in this instrument. Removal of covers and attempted adjustment or
service by unqualified personnel will invalidate the warranty and may incur additional
charges for repair.
4. References should always be made to the Health and Safety data supplied with any
chemicals used. Generally accepted laboratory procedures for safe handling of chemicals
should be employed.
5. If it is suspected that safety protection has been impaired in any way, the unit must be
made inoperative and secured against any intended operation. The fault condition should
immediately be reported to the appropriate servicing authority.
Merci de lire attentivement ces informations avant d'installer ou d'utiliser cet appareil.
1. L'appareil décrit dans ce manuel est conçu pour être utilisé uniquement par des
personnes formées. Tout réglage, maintenance ou réparation doit être effectué comme
décrit dans ce manuel, par une personne qualifiée consciente des risques encourus.
2. Il est essentiel que les personnes utilisant et intervenant sur cet appareil respectent les
règles de sécurité de travail, en plus des instructions détaillées précisées dans ce
manuel.
3. En-dehors des éléments décrits dans les procédures de maintenance ci-incluses, cet
appareil ne contient aucun élément réparable par l'utilisateur. L'enlèvement des capots et
les tentatives de réglage ou de réparation par des personnes non qualifiées invalide toute
garantie et entraîne un risque de frais de réparation supplémentaires.
4. Toujours se référer aux fiches techniques de santé et de sécurité accompagnant tout
produit chimique utilisé. Respecter les procédures de laboratoire généralement
acceptées pour la manipulation en toute sécurité des produits chimiques.
5. Si l'utilisateur suspecte qu'un problème quelconque puisse mettre en cause la sécurité,
l’appareil doit être rendu inopérant en empêchant son utilisation. Communiquer la
défaillance constatée au service de maintenance compétent.

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Bitte lesen Sie diese Hinweise vor Installation oder Gebrauch dieser Ausrüstung sorgfältig
durch.
1. Das in diesem Handbuch beschriebene Gerät darf nur von geschultem Personal bedient
werden. Alle Anpassungen, Wartungsarbeiten und Reparaturen müssen entsprechend
der Vorgaben in diesem Handbuch und von einer kompetenten Person, die mit den damit
verbundenen Gefahren vertraut ist, durchgeführt werden.
2. Es ist wichtig, dass sowohl das Bedienungs- als auch das Service-Personal zusätzlich zu
den detaillierten Anweisungen in diesem Handbuch ein sicheres Arbeitssystem
einsetzen.
3. Mit Ausnahme der Teile, deren Wartungsverfahren in diesem Handbuch beschrieben
sind, enthält dieses Gerät keine weiteren Teile, die vom Benutzer gewartet werden
können. Das Entfernen von Abdeckungen und Versuche von hierfür unqualifiziertem
Personal, Anpassungen oder Wartungsarbeiten durchzuführen, haben zur Folge, dass
die Garantie verfällt und können zusätzliche Reparaturkosten auslösen.
4. Es ist jederzeit auf die sicherheitsrelevanten Daten sämtlicher verwendeter Chemikalien
Bezug zu nehmen. Allgemein anerkannte Labormethoden zum sicheren Umgang mit
Chemikalien sollten eingesetzt werden.
5. Besteht der Verdacht, dass die Sicherheitsvorrichtungen in irgendeiner Weise beschädigt
wurden, muss das Gerät außer Betrieb genommen und gegen weiteren Gebrauch
gesichert werden. Die Störung sollte der zuständigen Serviceeinrichtung unverzüglich
gemeldet werden.
Leggere attentamente queste istruzioni prima di installare o utilizzare il dispositivo.
1. L'unità descritta nel presente manuale è stata realizzata per essere utilizzata solo da
personale che ha ricevuto l'apposita formazione. Qualsiasi operazione di regolazione,
manutenzione e riparazione deve essere effettuata sulla base di quanto indicato nel
presente manuale da personale qualificato consapevole dei rischi connessi.
2. È fondamentale che il personale operativo e il personale addetto alla manutenzione
utilizzino un sistema di lavoro sicuro, oltre a seguire le istruzioni specificate nel presente
manuale.
3. Oltre a quelli indicati nelle procedure di manutenzione, all'interno di questo dispositivo
non sono presenti altri elementi sui quali è possibile effettuare interventi. La rimozione
delle protezioni e qualsiasi tentativo di regolazione o di manutenzione posto in essere da
personale non qualificato invaliderà la garanzia. In questi casi, sarà necessario pagare un
importo per le riparazioni effettuate.
4. È sempre necessario fare riferimento ai dati sulla salute e sulla sicurezza forniti con le
sostanze chimiche utilizzate. Adottare le procedure di laboratorio generalmente accettate
per la gestione delle sostanze chimiche.

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5. Nel caso in cui si sospetti che la salute possa essere pregiudicata in qualsiasi modo,
disattivare l'unità per renderla inutilizzabile. Qualsiasi condizione di errore deve essere
immediatamente segnalata al responsabile per la manutenzione.
Lea esta información atentamente antes de instalar o utilizar este equipo.
1. La unidad descrita en este manual está diseñada para que solamente la utilice personal
con formación. Cualquier operación de ajuste, mantenimiento y reparación debe llevarse
a cabo del modo indicado en este manual y debe realizarla una persona cualificada que
sea consciente de los peligros que implica.
2. Es fundamental que tanto los operarios como el personal de servicio utilicen un sistema
de trabajo seguro, así como las instrucciones detalladas que se especifican en este
manual.
3. Cualquier elemento que no se encuentre entre los definidos en los procedimientos de
mantenimiento aquí descritos no podrá utilizarse en este instrumento. La extracción de
las tapas y los intentos de ajuste o reparación por parte de personal no cualificado
invalidarán la garantía y pueden incurrir en cargos adicionales por reparación.
4. Siempre deberían consultarse los datos sobre Salud y Seguridad que se suministran con
cualquier producto químico que se utilice. Es necesario llevar a cabo los procedimientos
de laboratorio de aceptación generalizada para la manipulación segura de productos
químicos.
5. Si existe la sospecha de que las medidas protectoras de seguridad han quedado
dañadas en cualquier modo, la unidad debe inutilizarse y protegerse contra toda
operación que se intente llevar a cabo. El estado de fallo debe comunicarse
inmediatamente a la autoridad de servicio de mantenimiento y reparación pertinente.

Model 3520 pH/mV/Temperature Meter
Operating Manual
Contents
Section 1 Introduction
Instrument Description 1.1
Instrument Specification 1.2
Section 2 Installation
Unpacking 2.1
Installation 2.2
Displays/Controls 2.3
Inputs/Outputs 2.4
Section 3 Operation
Theory of pH measurement 3.1
pH Measurement 3.2
Preparation of Buffer Solution 3.3
Solution Temperature Values 3.4
Good Practice Guidelines 3.5
Set-Up Parameters 3.6
pH Calibration 3.7
Error Codes 3.8
mV Mode 3.9
Performing Measurements 3.10
Status Page 3.11
Results Storage and Display 3.12
GLP Functions 3.13
Section 4 Maintenance
General 4.1
Cleaning/Re-conditioning of Glass Electrodes 4.2
Section 5 Optional Accessories
Optional Accessories 5.1
Spares 5.2
Section 6 Interfacing
Analogue 6.1
RS232 6.2
Keypad Emulation 6.3
Printing 6.4
Section 7 Troubleshooting
Troubleshooting 7.1
Functional Checks 7.2
Reset Procedure 7.3
EC Declaration of Conformity
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Section 1
Introduction
1.1 Instrument Description
The Model 3520 is a fully specified laboratory pH/mV/Temperature meter that includes full support
for good laboratory practices (GLP). The meter supports 1, 2 or 3 point pH calibration on either
manually entered pH buffers or automatically temperature compensated buffers to DIN, JIS and
NIST standards. Powerful data logging capabilities are included with the ability to store up to 500
readings either manually, at timed intervals or on alarm events.
1.2 Instrument Specification
pH (1, 2 or 3 point cal)
Range: -2.000 to 20.000pH
Resolution: 0.001 / 0.01 / 0.1pH
Accuracy: ±0.003pH
mV (Absolute or Relative)
Range: -1999 to +1999mV
Resolution: 0.1mV
Accuracy: ±0.2mV
Input Impedance: >1012ohms
Temperature Measuring
Ranges: -10 to +105°C / 14 to 221°F
Resolution: 0.1°C / 1°F
Accuracy: ±0.5°C / ±1°F
ATC Range: 0 to 100°C / 32 to 212°F
Manual Temp. Compensation: 0 to 100°C / 32 to 212°F
Auto Buffer Selection: Jenway (2.00, 4.00, 7.00, 9.20 and 10.00)
DIN (3.06, 4.65, 6.79, 9.23, 12.75)
NIST (1.68, 4.01, 6.87, 9.18, 12.45)
JIS (1.68, 4.01, 6.87, 9.18, 12.45) or manually entered buffers
Calibration: User selectable 1, 2 or 3 point
Outputs: Analogue 1mV per 0.01pH
RS232 serial and IrDA printer interface
Alarm - open collector
Clock: 24 hours, hrs/min/sec or day of month/month/year, leap year
corrected (European and American formats)
GLP: Calibration reminder interval (1-999 hours)
Alarm outputs (open collector and audible)
Security code protected user data
Display: Back lit 1/8 VGA monochrome LCD
Languages:English, French, German, Italian, Spanish, Portuguese
Power: Power Supply 9Vac
Size: 275(l)x240(w)x150(d)mm
Weight: 850g
352 050/REV A/03-03
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Section 2
Installation
2.1 Unpacking
Remove the Model 3520 from the packaging and ensure the following items are included:
1. Model 3520 pH/mV/Temperature Meter
2. Glass bodied combination pH electrode (924 005)
3. ATC probe (027 500)
4. Electrode holder (903 300)
5. 4, 7 and 10pH buffer sachets
6. BNC shorting plug (009 146)
7. Power Supply (as specified at time of ordering the product)
8. Condensed operating instructions (352 051)
9. Operating Manual (352 050)
4
Any shortages or damage should be reported immediately to the manufacturer or your local
distributor.
2.2 Installation
The Model 3520 is supplied ready to use. Connect the ATC (if required) and the pH electrode to the
rear panel Temp and pH sockets.
The unit should be placed on a clean flat surface which is free from drafts and vibrations. The units
are designed for operation on 120V to 240V AC input at 50 to 60Hz.
Connect the power supply unit to the power inlet socket on the rear panel of the instrument and
connect to the mains socket. Turn the power on at the mains and switch the instrument on using
the power switch on the front of the instrument.
Do not position the product so that it is difficult to disconnect from the mains supply using the
mains plug.
The mains outlet socket used should be located close to the equipment and readily identifiable
and accessible to users.
Fig. 2.2.1 Electrode Holder Assembly
The electrode stand requires minimal assembly (refer to the diagram below).
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2
3

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2.3 Display
Fig. 2.3.1 – Display
1. Primary display – 4½ digit. Provides direct readout in pH and millivolts of samples and
standards.
2. Mode annunciators – shows selected measurement mode; pH, mV (Absolute and Relative).
3. Secondary display – 3½ digit display. Provides direct readout of automatic or manual
temperature.
4. Mode annunciators – indicates temperature in °C or °F and whether the measurements are
manually temperature compensated (MAN symbol).
5. Endpoint symbol – this symbol is displayed when an endpoint has been detected.
6. Mode tags – Each mode tag is highlighted when selected; SETUP, MODE (pH or mV),
STATUS or RESULTS. If a double headed arrow symbol is present this indicates that the
mode can be changed to an alternative option (pH/mV).
7. Real time clock - will display either date or time.
8. The following symbols will appear along the display:
Padlock - Set up parameters security locked
Notepad symbol - data logging to internal memory
IrDA status
Alarm indication - an Up arrow refers to Hi alarm / a Down arrow refers to Low alarm

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2.4 Keypad
2.4.1 Keypad
1. ESC used to switch the instrument on and to place into standby mode (only if power
supply lead remains connected to the instrument). Also used to escape/exit a
mode.
2. CAL / CLR used to select and perform a calibration sequence. This key is also used to clear
readings from Memory. Used to select Abs/Rel mV in mV mode.
3. Print key used to initiate a print.
4. Up Arrow used for adjustment during set up, to scroll results and to toggle between mV and
pH modes.
Down Arrow used for adjustment during set up, to scroll results and to toggle between mV and
pH modes.
Left Arrow used for adjustment during set up and to move between mode tags.
Right Arrow used for adjustment during set up and to move between mode tags.
STO used to accept an entered value in set-up mode and to instigate a stored reading.
This key can also be used as a CAL key during calibration.

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2.5 Inputs/Outputs
Fig. 2.5.1 – Rear panel layout
1. Ref Socket 2mm pin socket. Connection socket for separate reference electrode. When
performing measurements with some pH and ion selective electrodes a separate
reference electrode is needed.
2. pH Socket BNC type socket which allows combination pH or redox electrodes to be used.
3. Temp Socket 8 pin mini-DIN socket. This allows the optional Automatic Temperature
Compensation (ATC) probe to be connected.
4. Alarm Output 2 x 4mm sockets. Open collector alarm outputs.
Red for Hi / Black for Low.
5. Printer Socket 9 way socket for RS232 and IrDA connection.
6.Power In
AC 9V I/P socket. 2.1 x 5.5mm socket allowing the power supply to be connected
to the instrument.
7. Analog Out 2x4mm sockets. Analogue output (buffered electrode potential).

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Section 3
Operation
3.1 Theory of pH Measurement
pH is a unit of measurement which defines the degree of acidity or alkalinity of a solution. It is
measured on a scale of 0 to 14. The pH value quantifies the degree of hydrogen ion activity of an
acid or a base.
The internationally accepted symbol, pH, is derived from “p”, the mathematical symbol of the
negative logarithm and “H”, the chemical symbol for Hydrogen. The pH value is the negative
logarithm of Hydrogen ion activity as shown in the mathematical relationship pH= -log[H+].
The pH value of a substance is directly related to the ratio of the Hydrogen ion [H+] and the Hydroxyl
ion [OH-] concentrations. If the concentration of H+is greater than OH-, the material is acidic and
has a pH value of less than 7. Conversely, if the concentration of OH-is greater than H+the material
is basic, with a pH value greater than 7. If the concentrations of H+and OH-are equal the material is
neutral with a pH value of 7.
It can, therefore, be seen that pH is a measurement of both acidity and alkalinity, even though by
definition it is a selective measurement of hydrogen ion activity. The logarithmic relationship
between hydrogen ion concentration and the pH unit means that a change of one pH unit
represents a ten-fold change in hydrogen ion concentration.
3.2 pH Measurement
pH can be measured by using either pH papers/indicators or a pH meter, dependent on the level of
accuracy required. pH papers or indicators change colour as the pH level varies. These can be
used as a guide to the pH level, but can be limited in accuracy and difficult to interpret correctly in
murky or coloured samples.
For greater accuracy the use of a high impedance pH meter is recommended, together with a pH
measuring electrode and reference electrode.
Each component part of the measurement system can be described as follows:
a) the pH meter – is a high impedance amplifier used to accurately measure the minute electrode
voltages produced. The pH meter will display the results directly in pH units on either an analogue
or digital display. Voltages can also be read for special applications, ORP (Oxidation-Reduction
Potential) measurements or with Ion Selective Electrodes.
b) the pH electrode – is a hydrogen ion sensitive glass bulb, with a millivolt output that varies with
the changes in the relative hydrogen ion concentration inside and outside of the bulb. The pH
electrode has very high internal resistance, making the voltage change with pH difficult to measure.
The input impedance of the pH meter and leakage resistances are therefore important factors.
c) the reference electrode – these cells consist of an internal element, usually a silver/silver
chloride wire, electrolyte (KCl) and a liquid junction. The liquid junction provides a leak path for the
internal electrolyte to “weep” into the sample chamber and provide an electrical contact with the
liquid to be measured. If the liquid junction is inefficient then measurement will be inaccurate. It is
common for the reference electrode to be incorporated into the pH electrode. It is then called a
combination electrode. The Model 3520 is supplied with a combination electrode.

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The voltage developed by each individual pH electrode in the presence of a known hydrogen ion
concentration is theoretically predictable, but in practise deviations from the theoretical value can be
expected. These deviations will change slowly during the life of an electrode. It is therefore essential
to routinely calibrate the system using solutions with a known and constant pH value. These
solutions are called buffers.
3.3 Preparation of Buffer Solutions
Care must be taken in the preparation of all buffer solutions. The correct quantity of distilled or
deionised water should be used when preparing the solutions. For accurate and repeatable results
it is essential to follow the manufacturers instructions carefully.
3.4 Solution Temperature Values
The value of all buffer solutions varies with solution temperature. For accurate calibration of
electrodes using buffer solutions, it is necessary to measure the temperature of the buffer solution
being used. The unit should then be calibrated to the corrected pH value. Manufacturers of buffer
powders and solutions will provide a table of values at varying temperatures for their buffers.
Note: Buffer solutions will contaminate with exposure to air and should be stored in airtight
containers when not in use. Used solution should be discarded and not returned to the container as
this will cause contamination.
For best results fresh solutions should be prepared prior to calibration.

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3.5 Good Practice Guidelines
The types of electrodes are many and various. For the majority of tests carried out on aqueous
solutions, with a reasonable ionic strength; at ambient temperatures and with limited use in strongly
acidic or alkaline solutions, the standard glass or epoxy bodied combination electrode is ideal.
For other applications a more suitable pH/reference electrode pair may be required; details or
advice supplied on request.
The following general guidelines indicate the care and maintenance required for the three main
groups of electrodes (Combination, Reference and pH). For more detailed advice on specific
electrodes contact the electrode manufacturer.
1) After use Rinse thoroughly with deionised water
Short term storage Immerse in pH 4 buffer (all types)
Long term storage Fit wetting cap filled with 3M KCl adjusted to pH 4.
2) Electrodes should be stored a) away from direct sunlight
b) in a vertical position
c) within their specified temperature range
3) Always ensure the electrode is used within its specified temperature range. Degradation of
electrodes used above their specified temperature is rapid and irreversible.
4) Ensure the level of fill solution is above the internal elements in the electrode and that this
level remains above the sample in use.
5) DO NOT touch the sensitive glass pH membrane or reference junction during use. Excess
droplets of solution may be removed by gently blotting with filter paper or tissue. DO NOT rub
the electrode as this may induce an electrostatic charge.
6) Ensure no air bubbles are trapped at the bottom of the electrode. Removal of air bubbles is
possible by holding the electrode vertically and gently tapping the electrode body. Larger
bubbles may be removed by shaking the electrode in a downward direction.
7) During use ensure the electrode is rinsed in deionised water between each measurement to
eliminate risk of contamination of solutions.
8) Ensure that the side port/inlet if present is uncovered, especially during a long run of tests.
9) For samples such as blood, serum or any measurements of Tris buffer solutions the junction
may become badly clogged. For these measurements it is recommended that the Tris buffer
electrode is used (924 030).
10) For applications associated with the measurement of food extracts, it is recommended that
the Food electrode is used (924 051). This will reduce the risk of blockage from fat proteins,
will be easy to clean and is perfect for measurements in agar media. This electrode is also
recommended for measurements where deposits on the electrodes are likely. The flat
surface is easy to clean and robust.
11) For low ionic strength applications the Environmental electrode (924 050) is recommended.

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3.6 Set Up Parameters
The following section details the set-up modes available to the user on the main set up menu
screen:
Exit allows the user to exit this menu.
pH Resolution allows the user to select the preferred resolution for the samples under test.
Use the Up/Down arrows on the keypad to scroll between 0.001pH, 0.01pH
and 0.1pH.
mV Resolution allows the user to select the preferred resolution. Use the Up/Down arrows
on the keypad to scroll between 0.1mV and 1mV.
Language enables the selection of the appropriate language – English, French,
German, Italian, Spanish or Portuguese. Use the Up/Down keys to scroll
through the language options.
LCD Brightness (%) enter the value using the keypad. Press the STO key to accept the value.
3.6.1 Instrument Setup
This option will allow the following parameters to be set:

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3.6.3 Calibration Set up …
3.6.2 Temperature Setup...
Select the Temperature Setup sub menu by highlighting the option and pressing the STO key. The
following menu will be shown:
Exit enables the user to exit the Setup menu and return to the main set up
screen.
Cal Buffers Used allows selection of 1, 2 or 3 point calibration.
Cal Buffer Set allows selection to be made from the choice of buffer types available:
Auto-Buffer (Jenway), Manual Entry, Auto-Buffer (JIS), Auto-Buffer (NIST) or
Auto-Buffer (DIN).
Manual Cal 1 allows Cal 1 manual buffer value to be set using the Up/Down keys. The
Left/Right arrow keys allow forward and backward movement along the
row of digits. Press the STO key to accept the value.
Manual Cal 2 allows Cal 2 manual buffer value to be set using the Up/Down keys. The
Left/Right arrow keys allow forward and backward movement along the
row of digits. Press the STO key to accept the value.
Manual Cal 3 allows Cal 3 manual buffer value to be set using the Up/Down keys. The
Left/Right arrow keys allow forward and backward movement along the
row of digits. Press the STO key to accept the value.
This option allows the following parameters to be set:
Temp units allows selection of the preferred unit of measurement (either °C or °F) using
the Up/Down keys which toggle between the two units.
Manual temperature allows the manual temperature value to be set. Press the STO key to
accept the value.

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3.6.5 G.L.P Setup …
Exit enables the user to exit the Setup menu and return to the main
set up screen.
Cal Reminder can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Cal Reminder Interval can be set within the limits of 001 to 999 hours by using the Up/Down
keys.The Left/Right arrow keys allow forward and backward
movement along the row of digits. Press the STO key to accept the
value.
Cal Reminder Audible Alarm can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
User ID up to a 4 digit code can be set using the Up/Down keys. The Left/
Right arrow keys allow forward and backward movement along the
row of digits. Press the STO key to accept the value
3.6.4 Alarms Setup...
Exit enables the user to exit the Setup menu and return to the main
set up screen.
Alarm Outputs can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Audible Alarm Warning can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
pH Alarm High allows the user to set the high alarm limit up to 20.000 pH.
pH Alarm Low allows the user to set the low alarm limit down to -2.000 pH.
mV Alarm High allows the user to set the high alarm limit up to +1999.9mV.
mV Alarm Low allows the user to set the low alarm limit -1999.9 mV.

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3.6.7 Data Logging Set up …
Exit enables the user to exit the Set Up menu and return to the main
set up screen.
Data Log Event can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Data Log To allows the data to be sent to Memory or to the external Printer.
Selection is made via the Up/Down keys which toggle between the
two settings.
Batch ID up to a 3 digit code can be set by using the Up/Down keys.The Left/
Right arrow keys allow forward and backward movement along the
row of digits. Press the STO key to accept the value.
3.6.6.Security Setup …
Select the Security Setup sub menu buy highlighting the option and pressing the STO key. The
following menu will be shown:
Exit enables the user to exit the Set Up menu and return to the previous
set up screen.
Data Entry Security can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Security Code up to a 3 digit code can be set by using the Up/Down keys.The Left/
Right arrow keys allow forward and backward movement along the
row of digits. Press the STO key to accept the value.
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3.6.8 Printer Setup …
Select the Printer Setup sub menu buy highlighting the option and pressing the STO key. The
following menu will be shown:
Data Log Interval can be set between 00:00:01 and 23:59:59.
Memory Full gives the user to select the Stop (cease storing results and not to
overwrite existing stored information) or Overwrite (overwrite existing
results) options when the memory is full. Selection is made via the
Up/Down keys which toggle between the two settings.
Prompt Before Deleting can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Clr Key toggles between Deletes Results Before, Deletes All Results and
Deletes Results Since. Selection is made via the Up/Down keys
which toggle between the four settings.
Exit enables the user to exit the Setup menu and return to the main
instrument display.
Printer Interface toggles between Infrared and Serial. Selection of the preferred option
can be made using the Up/Down keys which toggle between the two
settings.
Serial Printer Baudrate toggles between 9600 and 1200. Selection of the preferred option can
be made using the Up/Down keys which toggle between the two
settings. (Refer Section 6.2).
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3.6.9 Endpoint Detection Set up …
3.6.10 Clock Set up …
Select the Clock Setup sub menu buy highlighting the option and pressing the STO key. The
following screens will be shown:
Exit enables the user to exit the Set Up menu and return to the main
instrument display.
Endpoint detection can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Endpoint Audible Alarm can be enabled or disabled by using the Up/Down keys which toggle
between the two settings.
Endpoint Stability (Sec) can be set within the limits of 001 to 999 seconds.
Exit enables the user to exit the Setup menu and return to the main
instrument display.
Display toggles between Time and Date. Selection of the preferred option
can be made using the Up/Down keys which toggle between the two
settings.
Date Format toggles between European (DD/MM/YY) and American (MM/DD/YY)
formats. Selection of the preferred option can be made using the Up/
Down keys which toggle between the two settings.
Time allows time to be set (hrs/min/sec) using the Up/Down
keys. The Left/Right arrow keys allow forward and backward
movement along the row of digits. Press the STO key to accept the
setting.
Date allows date to be set (in previously selected format – European or
American) using the Up/Down keys. The Left/Right arrow keys allow
forward and backward movement along the row of digits. Press the
STO key to accept the setting.
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