Wtw PH/ION 340i Manuel utilisateur

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

299

°C

RCL

STO

CAL

pH/Ion 340i

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.

pH/Ion 340i List of contents

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

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

888

mV/pH

°C

LoBat

AutoCal DIN

CalError

ARng AR

AutoCal TEC

UpH

Time

Baud

Day.Month No.

Ident

Year

ISE

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

123

pH/Ion 340i Mains power

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

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

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

▲

▼<M>

pH/Ion 340i pH calibration

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

-57 ... -56

Clean the electrode according

to the electrode operating

manual

-30 ... +30 -62 ... -61

-56 ... -50

Invalid calibration

< -30 or > 30 < -62 or > -50

pH calibration pH/Ion 340i

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>.

1C t

°C

AutoCal TEC

2C t

°C

AutoCal TEC

45 9

mV/pH

pH/Ion 340i pH calibration

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

ConCal

°C

307 1

ConCal

°C

OS L

°C

ConCal

554 7

ConCal

°C

25 9

mV/pH

ISE calibration pH/Ion 340i

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.

000

ConCal

mg/l

ISE

000

ConCal

mg/l

ISE

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