wtw pH/ION 340i User manual

pH/Ion 340i
ba52317edfs04 06/2004
ba52317edfs
Operating manual
Bedienungsanleitung
Mode d’emploi
Instrucciones de operación
pH/Ion Pocket Meter Page 3
pH/Ionen-Taschenmeßgerät Seite 17
pH/Ion-mètre de poche Page 31
Medidor manual del pH/ion Página 45
8
4
2
299
6
°C
TP
pH
AR
RCL
STO
CAL
M
O

pH/Ion 340i
2
Note to this
operating manual This operating manual contains a description of
lall basic functions,
lall instructions for a safe operation, and
lall technical data in a compact form.
A more detailed description with notes for special applications is available as
a pdf document via internet under http://www.WTW.com.
Hinweise zu dieser
Bedienungs-
anleitung
Diese Bedienungsanleitung enthält in kompakter Form
ldie Beschreibung aller Grundfunktionen,
lalle Hinweise für den sicheren Betrieb und
lalle technischen Daten.
Eine ausführlichere Beschreibung mit Hinweisen für besondere Anwendun-
gen ist als pdf-Dokument im Internet unter http://www.WTW.com erhältlich.
Remarque àce
mode d’emploi Ce mode d'emploi contient sous forme compacte
lla description de toutes les fonctions de base et
ltoutes les informations assurant un fonctionnement sûr, ainsi que
ltous les données techniques.
Une description plus étendue contenant les informations sur des emplois
spéciaux peut être obtenue sous forme pdf dans l'internet sous http://
www.WTW.com.
Observatión
a estas
instrucciones
Este manual de instrucciones incluye la descripción en forma resumida de
ltodas las funciones básicas,
ltodas las observaciones que le garantizan el
lfuncionamiento normal y seguro, asimismo todo las especificaciones y
datos técnicos.
En el internet, bajo http://www.WTW.com encuentra Ud. una descripción
más detallada, en formato pdf, para aplicaciones especiales.
Copyright ©Weilheim 2004, WTW GmbH

pH/Ion 340i List of contents
3
pH/Ion 340i - List of contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Display and jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mains power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Switching on the measuring instrument . . . . . . . . . . . . . . . . . . 5
Measuring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ISE calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Saving data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Outputting the data memory. . . . . . . . . . . . . . . . . . . . . . . . . . 11
Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Configuring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Resetting to default settings. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Safety pH/Ion 340i
4
Safety
Safety
instructions The individual chapter of this operating manual use the following safety in- struction to indicate various types of danger:
Warning
indicates instructions that must be followed precisely in order to avoid the
possibility of slight injuries or damage to the instrument or the environment.
Display and jack field
Display
Jack field
Warning
Only connect sensors to the measuring instrument that cannot return any
voltages or currents that are not allowed (> SELV and > current circuit with
current limiting). Almost all sensors - in particular WTW sensors - fulfill these
conditions.
Status display indicator
Measured value display
Function and
Temperature display
Sensor symbol
%
°F
% ppm
mol/L
RCL
8
8.
8
888
8
mV/pH
°C
LoBat
AutoCal DIN
CalError
ARng AR
AutoCal TEC
TP
1
UpH
Time
Baud
Day.Month No.
Ident
Year
ISE
S
mg/l
TempError
Auto Store
ConCal
1pH electrode or ISE single-rod
measuring electrode/electrode 4pH temperature sensor
2Reference electrode 5Serial Interface RS232 / analog
output (recorder)
3Plug-in power supply unit
Ref
5
123
4

pH/Ion 340i Mains power
5
Mains power
You can either operate the measuring instrument with batteries or with the
plug-in power supply. The plug-in power supply provides the measuring in-
strument with low voltage (7.5 V ... 12 V DC). This saves the batteries.
Warning
The line voltage at the operating site must lie within the input voltage range
of the original plug-in power supply (see TECHNICAL DATA).
Warning
Only use original plug-in power supplies (see TECHNICAL DATA).
Switching on the measuring instrument
Ref
2
1
3
lPlug the jack (1) into the socket (2) of the measuring instrument.
lConnect the original WTW plug-in power supply (3) to an easily accessi-
ble mains socket.
lPress the <>key.
Display test appears briefly on the display.
After this, the measuring instrument automatically switches to the mea-
suring mode. The display shows the relevant measured value.

Measuring pH/Ion 340i
6
Measuring
Overview of the measuring modes:
Special functions:
Select pH
resolution If you press <M> while pressing the <RUN/ENTER> key, the resolution swaps between 0.01 and 0.001.
AutoRead
(drift control) The AutoRead function checks the stability of the measurement signal (ex- cept for the measurement of the ORP voltage). Activate AutoRead with
<AR>. Press <RUN/ENTER> to start the AutoRead measurement. During
the AutoRead measurement, AR flashes on the display until a stable mea-
sured value is reached. This can be terminated at any time taking over the
current measured value with <RUN/ENTER>.
Temperature
measurement
during pH
measurements
You can use pH electrodes with and without temperature sensors. The mea-
suring instrument recognizes which temperature sensors are connected and
switchesautomaticallytothecorrectmodefor thetemperature measurement
(display TP).
Manual temperature input: Set the temperature value with <▲> <▼>while
pressing the <RUN/ENTER> key.
ISE concentration
mg/l
pH value Redox
voltage
mV
▲
▼<M>

pH/Ion 340i pH calibration
7
pH calibration
AutoCal TEC This process is specially adapted to the WTW technical buffer solutions as a
fully automatic single or two-point calibration. The buffer solutions are au-
tomatically recognized by the measuring instrument. Depending on the in-
strument setting, the instrument displaysthe relevant buffer nominal value or
the current electrode voltage in mV.
Valid buffer (values at 25 °C): 2.00 / 4.01 / 7.00 / 10.01
Note
The calibration for pH 10.01 is optimized for the WTW technical buffer solu-
tion TEP 10 Trace or TPL 10 Trace. Other buffer solutions can lead to an er-
roneous calibration. The correct buffer solutions are given in the WTW
catalog or in the Internet.
AutoCal DIN as AutoCal TEC, but matched to buffer solutions according to DIN 19266.
Valid buffer (values at 25 °C): 1.679 / 4.006 / 6.865 / 9.180
ConCal is the conventional two-point calibration using two buffer solutions (pH 7.0
± 0.5 and any other buffer solution) or a single-point calibration using any
buffer solution and is used as a high-speed method.
Calibration
evaluation After calibrating, the measuring instrument automatically evaluates the cali- bration. The asymmetry and slope are evaluated separately. The worst eval-
uation appears on the display.
Display Asymmetry[mV] Slope [mV/pH]
-15 ... +15 -60.5 ... -58
-20 ... +20 -58 ... -57
-25 ... +25 -61 ... -60.5
or
-57 ... -56
Clean the electrode according
to the electrode operating
manual
-30 ... +30 -62 ... -61
or
-56 ... -50
E3
Invalid calibration
< -30 or > 30 < -62 or > -50

pH calibration pH/Ion 340i
8
Note
If a printer isconnected to theinterface, a calibration protocol is automatically
printed after a valid calibration.
AutoCal TEC / AutoCal DIN procedure:
The following example shows the AutoCal TEC calibration. In the
AutoCal DIN calibration, Cd... instead of Ct... appears on the display. Other-
wise, both procedures are identical.
lConnect the pH electrode to the measuring instrument.
If necessary, press the <M> key repeatedly until the status display pH (pH
measurement) or U(measurement of the ORP voltage) appears.
lPress the <CAL> key repeatedly until the display Ct1 and the function dis-
play AutoCal TEC appears. The sensor symbol displays the evaluation of
the last calibration (or no sensor symbol in the delivery state or after the
measurement parameter has been reset).
lImmerse the pH electrode into the first buffer solution.
lWhen measuring without a temperature sensor:
Enter the temperature of the first buffer solution with <▲> <▼>while
pressing the <RUN/ENTER> key.
lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-
trode voltage (mV) or the buffer nominal value appears on the display. If
the measured value is stable, Ct2 appears.
Note
At this point, the AutoCal TEC calibration can be terminated with
<M>. Thiscorresponds toasingle-point calibration.To do this,
theinstrumentusestheNernst slope(-59.2 mV/pHat25 °C) and
determines the asymmetry of the electrode.
lImmerse the two-point calibration pH electrode in the second buffer so-
lution to continue.
lWhen measuring without a temperature sensor:
Enter the temperature of the second buffer solution with <▲> <▼>while
pressing the <RUN/ENTER> key.
lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-
trode voltage (mV) or the buffer nominal value appears on the display.
lWhen the measured value is stable, the instrument displays the value of
the slope and the calibration evaluation.
lPress <RUN/ENTER>. The instrument displays the value of the asymme-
try.
lSwitch to the measuring mode with <M>.
8
4
2
1C t
°C
TP
pH
AutoCal TEC
8
4
2
2C t
°C
TP
pH
AutoCal TEC
pH
45 9
mV/pH
-
pH
2
mV

pH/Ion 340i pH calibration
9
ConCal procedure:
lConnect the pH electrode to the measuring instrument.
If necessary, press the <M> key repeatedly until the status display pH (pH
measurement) or U(measurement of the ORP voltage) appears.
lPress the <CAL> key repeatedly until the display ASY and the function
displayConCalappears.Thesensor symboldisplaystheevaluationofthe
last calibration (or no sensor symbol in the delivery state or after the mea-
surement parameter has been reset).
lImmerse the pH electrode in the first buffer solution
(pH 7.0 ± 0.5 in two-point calibration).
lWhen measuring without a temperature sensor:
Enter the temperature of the first buffer solution with <▲> <▼>while
pressing the <RUN/ENTER> key.
lPress the <RUN/ENTER> key.
The measured pH value appears on the display.
lSet the measured value to the nominal pH value of the buffer solution (at
the current temperature) with <▲> <▼>.
lWhen the measured value is stable, press the <RUN/ENTER> key. The
value of the asymmetry appears.
lPress the <RUN/ENTER> key. SLO appears.
Note
At this point, the ConCal calibration can be terminated with <M>.
This corresponds to a single-point calibration. To do this, the
instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and de-
termines the asymmetry of the electrode.
lImmerse the two-point calibration pH electrode in the second buffer so-
lution to continue.
lWhen measuring without a temperature sensor:
Enter the temperature of the second buffer solution with <▲> <▼>while
pressing the <RUN/ENTER> key.
lPress <RUN/ENTER>.
lSet the measured value to the nominal pH value of the buffer solution (at
the current temperature) with <▲> <▼>.
lWhen the measured value is stable, press the <RUN/ENTER> key. The
instrument displays the value of the slope and the calibration evaluation.
lPress <RUN/ENTER>. The instrument displays the value of the asymme-
try.
lSwitch to the measuring mode with <M>.
YAS
TP
pH
ConCal
8
4
2
°C
307 1
p
H
ConCal
TP
8
4
2
°C
5
2
OS L
°C
TP
pH
ConCal
554 7
pH
ConCal
TP
8
4
2
°C
pH
25 9
mV/pH
-
pH
3
mV

ISE calibration pH/Ion 340i
10
ISE calibration
ConCal (ISE) This is the conventional two-point or three-point calibration procedure that
uses 2 or 3 freely selectable standard solutions.
Calibration Use two or three different standard solutions from the following selection. In
the three-point calibration, the standards must be selected in either ascend-
ing or descending order.
Note
If a printer isconnected to theinterface, a calibration protocol is automatically
printed after a valid calibration.
ConCal (ISE) procedure:
Parameter Values [mg/l]
Std 1 0.01 / 0.02 / 0.05 / 0.1 / 0.2 / 0.5 / 1 / 2 / 5 / 10 / 20 /
50 / 100 / 200 / 500 / 1000
If Std 2 >Std 1, Std 3 must be >Std 2
If Std 2 <Std 1, Std 3 must be <Std 2
Std 2
Std 3
lPress the <CAL> key. Std2 appears on the display.
lEnter the current concentration of the first standard solution with
<▲> <▼>.
lImmerse the ISE electrode and, if necessary, the temperature sensor in
the first standard solution.
lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-
trodevoltage (mV)appearson thedisplay.Ifthemeasuredvalueisstable,
Std2 appears.
lEnter the current concentration of the second standard solution with
<▲> <▼>.
lThoroughly rinse the ISE electrode and, if necessary, the temperature
sensor with deionized water and immerse in the second standard solution.
lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-
trodevoltage (mV)appearson thedisplay.Ifthemeasuredvalueisstable,
the slope appears in calibration range I.
Note
Atthispoint,theISEcalibrationcanbeterminatedwith<M>.This
correspondsto a two-point calibration with the displayed slope.
1
d
t
000
ConCal
mg/l
1
ISE
S
2
d
t
000
ConCal
mg/l
2
ISE
S
4
6
ISE
mV
S
2

pH/Ion 340i Saving data
11
Saving data
Saving data
manually Press the <STO> key in the measuring mode (display No. with the number of thenextfreememorylocation).Then,press <RUN/ENTER> and enter the ID
number with <▲> <▼>. Terminate the save with <RUN/ENTER>. The instru-
ment changes to the measuring mode.
Saving data
automatically
Int 1
TheportablemeasuringinstrumentpH/Ion 340ihas aninternaldatamemory.
It can store up to 500 datasets. The save interval (Int 1) determines the chro-
nological interval between automatic save processes.
To set up the save interval, press <STO> while pressing the <RUN/ENTER>
key (display Int 1) and set the interval with <▲> <▼>key. Then, press
<RUN/ENTER> and enter the ID number with <▲> <▼>. Change to the last
activemeasuringmodewith<RUN/ENTER>.Theautomaticsaveisswitched
on (display Auto Store).
Outputting the data memory
You can output the data memory with the <RCL> key. By repeatedly press-
ing the <RCL> key, you reach the following functions:
Start the output with <RUN/ENTER> .
lPress the <RUN/ENTER> key to continue the three-point calibration.
Std3 appears.
lEnter the current concentration of the third standard solution with
<▲> <▼>.
lThoroughly rinse the ISE electrode and, if necessary, the temperature
sensor with deionized water and immerse in the third standard solution.
lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-
trodevoltage(mV)appearsonthedisplay.Ifthemeasuredvalueisstable,
the slope appears in calibration range II.
lSwitch to the measuring mode with <M>.
3
d
t
000
ConCal
mg/l
5
ISE
S
1
2
ISE
mV
S
3
StO dISP Output stored data on the display
StO SEr Output stored data on the serial interface
CAL dISP Output calibration data on the display
CAL SEr Output calibration data on the serial interface

Transmitting data pH/Ion 340i
12
Transmitting data
Transmitting data
manually Press the <RUN/ENTER> key in the measuring mode. This manually triggers a data transmission of the current measured value to
the serial interface at any time - independently of the selected intervals.
Transmitting data
automatically
Int 2
The interval to the data transmission (Int 2) determines the chronological in-
terval between automatic data transmissions. After the selected interval ex-
pires, the current data record is transmitted to the interface. To set up the
transmission interval, press <RCL> while holding down the <RUN/ENTER>
key (display Int 2). Then, set the interval with <▲> <▼>.
Configuring
Note
You can leave theconfiguration menu at anytime with <M>. The parameters
already changed are stored.
Procedure for configuring (factory settings appear in bold typeface):
lSwitch off the measuring instrument.
lWhile pressing the <M> key, press <>.
lSelect the required Baud rate with <▲> <▼>.
Selection: 1200, 2400, 4800, 9600 Baud.
lThen press the <RUN/ENTER> key.
lSelect the required display during the pH calibration with <▲> <▼>.
Selection:Buffer nominal value (/pH) or currentelectrode voltage (mV).
lThen press the <RUN/ENTER> key.
lSet the required calibration interval with <▲> <▼>.
Selection: 1... 7... 999 d.
lThen press the <RUN/ENTER> key.
lSelect the date and time step-by-step with <▲> <▼>. In between, press
the <RUN/ENTER> key each time.
lWhen the last <RUN/ENTER> key has been pressed, the instrument
changes to the last active measuring mode.
Baud
0
40
8
LC A
pi sd
/pH
7
3n t
pH
Time
I
d
Day.Month
4
00
9

pH/Ion 340i Resetting to default settings
13
Resetting to default settings
You can reset the measurement parameters and the configuration to the de-
livery status separately from one another (initialization).
Measurement
parameters The following measurement parameters can be reset to the delivery status:
Configuration
parameters The following configuration parameters (InI) can be reset to the delivery sta- tus:
Procedure of the reset:
pH/ORP (pH InI)
Measuring mode pH
Slope -59.16 mV/pH
Asymmetry 0 mV
Manual temperature input 25 °C
Resolution (pH display) 0.001
Baud rate 4800
Display during pH calibration Buffer nominal value
Interval 1
(automatically saved) OFF
Interval 2
(for data transmission) OFF
lTo switch it off, press <CAL> while pressing the <RUN/ENTER> key.
lTo reset the measurement parameters with <▲> <▼>, select YES and
confirm with <RUN/ENTER>, or
lContinue to the configuration parameters without resetting (InI) with the
<RUN/ENTER> key.
lAfter the configuration parameters, InI changes the instrument to the last
active measurement mode.
1In
o
n
pH

Technical data pH/Ion 340i
14
Technical data
Dimensions
and weight
Mechanical
structure
Electrical safety
Test certificates
Ambient
conditions
pH/ORP
measuring ranges
Precision of
pH/ORP (± 1 digit)
Length [mm] 172
Width [mm] 80
Height [mm] 37
Weight [kg] approx. 0.3
Type of protection IP 66
Protective class III
cETLus, CE
Storage - 25 °C ... + 65 °C
Operation -10 °C ... + 55 °C
Climatic class 2
Measuring range Resolution
pH - 2.000 ... + 19.999
- 2.00 ... + 19.99 0.001 0.01
U [mV] - 999.9 ... + 999.9
- 1999 ... + 1999 0.1 1
T [°C] - 5.0 ... + 105.0 0.1
pH
(± 2 pH units from the
calibration point)
± 0.003 at + 15 °C ... + 35 °C
± 0.01
U [mV] ± 0.2 at + 15 °C ... + 35 °C
T [°C] NTC 30:
± 0.1
PT 1000:
± 0.5 at 0 °C ... 15 °C
± 0.1 at 15 °C ... 35 °C
± 1 at 35 °C ... 55 °C

pH/Ion 340i Technical data
15
pH correction
function
ISE measuring
ranges
Usable
ISE electrodes Combination and single electrodes with connector according to DIN 19262
ISE calibration
procedure Two point calibration or three point calibrationwith standards suiting the sam- ple
ISE slope ranges ± 25 to 35 mV and ± 50 to 70 mV
Analog output Automatic switchover when the recorder is connected AK 323.
Serial interface Automatic switchover when a PC or a printer is connected via the cable, AK
340/B or AK 325/S.
Temperature input
Manually [°C] - 20 ... + 130
Measuring range 1
Resolution 0.000 ... 9.999 mg/l 0.001 mg/l
Measuring range 2
Resolution 0.00 ... 99.9 mg/l 0.01 mg/l
Measuring range 3
Resolution 0.0 ... 999.9 mg/l 0.1 mg/l
Measuring range 4
Resolution 0 ... 1999 mg/l 1mg/l
Output signals corresponds to the electrode voltage,
i.e. 50-62 mV/pH unit
Accuracy ± 0.1 % of the measured value ± 4 mV
Internal resistance < 5 Ohm (current limited to max. 0.2 mA
output current)
Type RS232, data output
Baud rate Can be set to
1200, 2400, 4800, 9600 Baud
Data bits 8
Stop bit 2
Parity None
Handshake RTS/CTS + Xon/Xoff
Cable length Max. 15m

Technical data pH/Ion 340i
16
Power supply
Guidelines
and norms used
Batteries 4 x 1.5 V alkali-manganese batteries, Type AA
Operational life approx. 3000 operating hours
Mains The following applies to all plug-in power supplies:
Connection max. overvoltage category II
Plug-in power supply unit
(Euro, US , UK, Australian plug)
FRIWO FW7555M/09, 15.1432
Friwo Part. No. 1822089
Input: 100 ... 240 V ~ / 50 ... 60 Hz / 400 mA
Output: 9 V = / 1,5 A
EMC EG guideline 89/336/EWG
EN 61326 A1:1998
EN 61000-3-2 A14:2000
EN 61000-3-3:1995
FCC Class A
Instrument safety EG guideline 73/23/EWG
EN 61010-1 A2:1995
Climatic class VDI/VDE 3540
Type of protection EN 60529:1991
FCC Class A Equipment Statement
Note: This equipment has been tested and found to comply with the
limitsfor a Class A digital device, pursuantto Part 15 of the FCCRules.
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.

pH/Ion 340i Inhaltsverzeichnis
17
pH/Ion 340i - Inhaltsverzeichnis
Sicherheit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Display und Buchsenfeld . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Netzbetrieb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Meßgerät einschalten. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Messen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Kalibrieren pH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Kalibrieren ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Speichern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Datenspeicher ausgeben . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Daten übertragen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Konfigurieren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Rücksetzen (Reset) auf Grundeinstellungen . . . . . . . . . . . . . 27
Technische Daten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Sicherheit pH/Ion 340i
18
Sicherheit
Sicherheits-
hinweise In den einzelnen Kapiteln dieser Bedienungsanleitung weisen die folgenden Sicherheitshinweise auf verschiedene Stufen von Gefahren hin:
Achtung
kennzeichnet Hinweise, die genau beachtet werden müssen, um mögliche
leichteVerletzungen oder Schädenam Gerät oder der Umweltzu vermeiden.
Display und Buchsenfeld
Display
Buchsenfeld
Achtung
Schließen Sie an das Meßgerät nur Sensoren an, die keine unzulässigen
Spannungen oder Ströme (> SELV und > Stromkreis mit Strombegrenzung)
einspeisen können. Nahezu alle Sensoren - insbesondere WTW-Sensoren -
erfüllen diese Bedingungen.
Statusanzeige
Meßwertanzeige
Funktions- und
Temperaturanzeige
Sensorsymbol
%
°F
% ppm
mol/L
RCL
8
8.
8
888
8
mV/pH
°C
LoBat
AutoCal DIN
CalError
ARng AR
AutoCal TEC
TP
1
UpH
Time
Baud
Day.Month No.
Ident
Year
ISE
S
mg/l
TempError
Auto Store
ConCal
1ph-Meßkette oder ISE-Einstab-
meßkette/Elektrode 4Temperaturmeßfühler pH
2Referenzelektrode 5Serielle Schnittstelle RS232 /
Analogausgang (Schreiber)
3Steckernetzgerät
Ref
5
123
4

pH/Ion 340i Netzbetrieb
19
Netzbetrieb
Sie könnendasMeßgerätwahlweise mitBatterienoder mitdemSteckernetz-
gerät betreiben. Das Steckernetzgerät versorgt das Meßgerät mit Kleinspan-
nung (7,5 V ... 12 V DC). Die Batterien werden dabei geschont.
Achtung
Die Netzspannung am Einsatzort mußinnerhalb des Eingangs-Spannungs-
bereichs des Original-Steckernetzgeräts liegen (siehe TECHNISCHE DATEN).
Achtung
Verwenden Sie nur Original-Steckernetzgeräte (siehe TECHNISCHE DATEN).
Meßgerät einschalten
Ref
2
1
3
lStecker (1) in die Buchse (2) des Meßgeräts stecken.
lOriginal WTW-Steckernetzgerät (3) an eine leicht zugängliche Steckdo-
se anschließen
lTaste <>drücken.
Im Display erscheint kurz der Displaytest.
Das Meßgerät schaltet danach automatisch in den Meßmodus. Das Dis-
play zeigt den zugehörigen Meßwert an.

Messen pH/Ion 340i
20
Messen
Überblick über die Meßmodi:
Spezialfunktionen:
pH-Auflösung
wählen Wenn Sie <M> bei gedrückter Taste <RUN/ENTER> drücken, wechselt die Auflösung zwischen 0,01 und 0,001.
AutoRead
(Driftkontrolle) Die Funktion AutoRead prüft die Stabilität des Meßsignals (außer bei der Messung bei Redoxspannung). AutoRead mit <AR> aktivieren. Zum Starten
der AutoRead-Messung <RUN/ENTER> drücken. Während der AutoRead-
Messung blinkt die Anzeige AR, bis ein stabiler Meßwert vorliegt. Ein Ab-
bruch mit Übernahme des aktuellen Meßwerts ist jederzeit mit
<RUN/ENTER> möglich.
Temperaturmes-
sung bei pH-Mes-
sungen
Sie können pH-Meßketten mit und ohne Temperaturmeßfühler verwenden.
Das Meßgerät erkennt den Temperaturmeßfühler automatisch und schaltet
in den richtigen Modus der Temperaturmessung (Anzeige TP).
Manuelle Temperatureingabe: Bei gedrückter Taste <RUN/ENTER> Tempe-
raturwert mit <▲> <▼>einstellen.
ISE-Konzentration
mg/l
pH-Wert Redox-
spannung
mV
▲
▼<M>