Wtw PH 330i Manuel utilisateur

ba52311edfs04 06/2004

ba52311edfs

pH 330i

pH 340i

Operating manual

Bedienungsanleitung

Mode d’emploi

Instrucciones de operación

pH/mV Pocket Meter Page 3

pH/mV Taschenmeßgerät Seite 17

pH/ mV- mètres de poche Page 31

pH/ mV Medidor manual Página 45

992

RCL

STO

CAL

pH 330i/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.

Observación

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 330i/340i List of contents

pH 330i/340i - List of contents

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Display and jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Mains power (pH 340i only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Switching on the measuring instrument . . . . . . . . . . . . . . . . . . 5

Measuring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Saving data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Outputting the data memory. . . . . . . . . . . . . . . . . . . . . . . . . . 11

Transmitting data (only pH 340i) . . . . . . . . . . . . . . . . . . . . . . 11

Configuring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Resetting to default settings. . . . . . . . . . . . . . . . . . . . . . . . . . 13

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Safety pH 330i/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 electrodes to the measuring instrument that do not return any

unallowed voltages or currents (> SELV and > current circuit with current lim-

iting).

Almost all electrodes - in particular WTW electrodes - fulfill these conditions.

Status display indicator

Measured value display

Function and

Temperature display

Sensor symbol

°F

TempError

mg/L

% ppm

mol/L

ISE

RCL

888

mV/pH

°C

LoBat

AutoCal DIN

CalError

ARng AR

AutoCal TEC

UpH

Time

Baud

Day.Month No.

Ident

Year

Auto Store

ConCal

1pH electrode 4Temperature sensor

2Reference electrode 5RS232 interface or analog output/

recorder (only pH 340i)

3Plug-in power supply (only

pH 340i)

Ref

123

pH 330i/340i Mains power (pH 340i only)

Mains power (pH 340i only)

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 330i/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

switchesautomaticallyto thecorrectmodeforthetemperaturemeasurement

(display TP).

Manual temperature input: Set the temperature value with <▲> <▼>.

pH value Redox-

voltage

<M>

pH 330i/340i Calibration

Calibration

AutoCal TEC This process is specially adapted to the WTW technical buffer solutions as a

fully automatic single, two-point or three-point calibration. The buffer so-

lutions are automatically recognized by the measuring instrument. Depend-

ing on the instrument setting, the instrument displays the 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

Calibration pH 330i/340i

Note

If a printer isconnectedto theinterface, a calibrationprotocol 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.

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 <▲> <▼>.

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>. This correspondstoasingle-point calibration. To do this,

the instrument uses the Nernst slope (-59.16 mV/pH at 25 °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 <▲> <▼>.

lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-

trode voltage (mV) or the buffer nominal value appears on the display.

lIf the measured value is stable, the instrument displays the value of the

slope and the evaluation of the two-point calibration.

lPress <RUN/ENTER>. The instrument displays the value of the asymme-

try.

1C t

°C

AutoCal TEC

2C t

°C

AutoCal TEC

45 9

mV/pH

pH 330i/340i Calibration

Note

At this point, the AutoCal TEC calibration can be terminated with

<M>. This corresponds to a two-point calibration.

lImmerse the pH electrode in the second buffer solution to continue the

two-point calibration.

lWhen measuring without a temperature sensor:

Enter the temperature of the third buffer solution with <▲> <▼>.

lPress <RUN/ENTER>. The AutoRead measurement begins. The elec-

trode voltage (mV) or the buffer nominal value appears on the display.

lIf the measured value is stable, the instrument displays the value of the

slope and the evaluation of the three-point calibration.

lPress <RUN/ENTER>. The instrument displays the value of the asymme-

try.

lSwitch to the measuring mode with <M>.

3C t

°C

AutoCal TEC

85 8

mV/pH

Calibration pH 330i/340i

ConCal procedure:

lConnect the pH electrode to the measuring instrument.

lPress the <CAL> key repeatedly until the display ASY and the function

display ConCal 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 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 <▲> <▼>.

lIfthemeasuredvalueis stable,pressthe<RUN/ENTER> key. Thevalue

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 (-59.16 mV/pH at

25 °C) and determines the asymmetry of the electrode.

lImmerse the two-point calibration pH electrode in the secondbuffer 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 asym-

metry.

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

Ce manuel convient aux modèles suivants

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