Inolab PH level 2 Manuale utente

INSTRUCTION MANUAL

pH meter

Model : pH level 2

Brand :

inoLab

pH Level 2

ba12218e04 10/2002 71

Operating Manual

Laboratory pH meter

Accuracy when

going to press

The use of advanced technology and the high quality stan-

dard of our instruments are the result of continuous devel-

opment. This may result in differences between this

operating manual and your instrument.

We cannot guarantee that there are absolutely no errors in

this manual. We are sure you will understand that we cannot

accept any legal claims resulting from the data, figures or

descriptions.

Warranty declara-

tion

The designated instrument is covered by a warranty of three

years from the date of purchase.

The instrument warranty extends to manufacturing faults

that are determined within the period of warranty.

The warranty excludes components that are replaced during

maintenance such as batteries, etc.

The warranty claim extends to restoring the instrument to

readiness for use but not, however, to any further claim for

damages. Improper handling or unauthorized opening of the

instrument invalidates any warranty claim.

To ascertain the warranty liability, return the instrument and

proof of purchase together with the date of purchase freight

paid or prepaid.

Reprinting - even as excerpts - is only allowed with the ex-

plicit written authorization of WTW GmbH & Co. KG, Weil-

heim.

Printed in Germany.

List of contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

1.1 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

1.3 Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . .80

2.2 General safety instructions . . . . . . . . . . . . . . . . . .80

3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . 83

3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . .83

3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . .83

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

4.1 Switch on the instrument . . . . . . . . . . . . . . . . . . . .85

4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

4.2.1 Measuring the pH value . . . . . . . . . . . . . . .88

4.2.2 Measuring the Redox voltage . . . . . . . . . . .89

4.2.3 Transmitting measured values . . . . . . . . .90

4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

4.3.1 Calibration interval (Int 3) . . . . . . . . . . . . . .94

4.3.2 AutoCal TEC . . . . . . . . . . . . . . . . . . . . . . .95

4.3.3 AutoCal DIN . . . . . . . . . . . . . . . . . . . . . . . .98

4.3.4 ConCal . . . . . . . . . . . . . . . . . . . . . . . . . . .101

4.4 Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

4.4.1 Manual storage . . . . . . . . . . . . . . . . . . . . .104

4.4.2 Switching on AutoStore (Int 1) . . . . . . . . .106

4.4.3 Outputting the data storage . . . . . . . . . . .108

4.4.4 Clearing the storage . . . . . . . . . . . . . . . . .111

4.5 Data transmission . . . . . . . . . . . . . . . . . . . . . . . .112

4.5.1 Data transmission interval (Int 2) . . . . . . .112

4.5.2 Recorder (analog output) . . . . . . . . . . . . .114

4.5.3 PC/external printer (RS232 interface) . . .115

4.5.4 Remote control . . . . . . . . . . . . . . . . . . . . .116

4.6 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

4.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

List of contents

5 Maintenance, cleaning, disposal . . . . . . . . . . . 123

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . 125

7 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 129

8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

9 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Overview

1Overview

The compact inoLab pH Level 2 precision pH meter lets you

perform pH measurements rapidly and reliably. The inoLab

pH Level 2 provides the highest degree of operating com-

fort, reliability and measuring safety for all applications.

The proven MultiCal®calibration procedures and

special AutoRead function support your work with the pH

meter.

Note

The measuring instrument can also be delivered as part of

a set.

Information on this and other accessories is available in the

WTW catalog LABORATORY AND FIELD INSTRUMENTATION or

via the Internet.

1Keypad

2Display

3Sockets

Overview

1.1 Keyboard

1Call up calibration procedure

2Select measuring mode

3Display or transmit measured values

4Measuring instrument ON/OFF

5Activate/deactivate AutoRead function

6Store measured value

7Increase values, scroll

8Confirm inputs, start AutoRead

9Reduce values, scroll

Overview

1.2 Display

1.3 Sockets

Caution

Only connect probes to the instrument that cannot feed ex-

cessive voltages or currents (> SELV and > circuit with cur-

rent limiter).

Connectors:

1pH electrode

2Temperature probe

3Reference electrode

4RS 232 interface / analog output

5Plug-in power supply

Status line

Measured value display

Function and

temperature display

Overview

Safety

2 Safety

This operating manual contains basic instructions that you

must follow during the commissioning, operation and main-

tenance of the instrument. Consequently, all responsible

personnel must read this operating manual before working

with the instrument.

The operating manual must always be available within the

vicinity of the instrument.

Target group This measuring instrument was developed for use in the lab-

oratory.

Thus, we assume that, as a result of their professional train-

ing and experience, the operators will know the necessary

safety precautions to take when handling chemicals.

Symbols used

Caution

indicates instructions that have to be followed to prevent

damage to your instrument.

Warning

indicates instructions that have to be followed to protect

yourself and the instrument from dangerous electrical volt-

age.

Note

Indicates notes that draw your attention to special features.

Note

Indicates cross-references to other documents, e.g. appli-

cation reports, operating manuals of combination elec-

trodes, etc.

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