Wtw InoLab Oxi Level 2 Manual de usuario

inoLab

Oxi Level 2

ba12223e03 10/2002 71

Operating Manual

Laboratory dissolved oxygen meter

with integrated printer

Accuracy when

going to press

The use of advanced technology and the high quality

standard of our instruments are the result of continuous

development. 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

declaration

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

explicit written authorization of WTW GmbH & Co. KG,

Weilheim.

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

4.1 Switch on the instrument . . . . . . . . . . . . . . . . . . . .87

4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

4.2.1 Oxygen concentration . . . . . . . . . . . . . . . .88

4.2.2 Oxygen saturation . . . . . . . . . . . . . . . . . . .90

4.2.3 Oxygen partial pressure . . . . . . . . . . . . . . .90

4.2.4 Measuring range selection, AutoRange . . .91

4.2.5 AutoRead AR (drift control) . . . . . . . . . . . .93

4.2.6 Printing/transmitting measured values . . .94

4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

4.3.1 Starting the calibration . . . . . . . . . . . . . . . .97

4.3.2 Calibration interval (Int 3) . . . . . . . . . . . . . .99

4.3.3 Entering the salt content (salinity) . . . . . .100

4.4 Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

4.4.1 Manual storage . . . . . . . . . . . . . . . . . . . . .101

4.4.2 Switching on AutoStore (Int 1) . . . . . . . . .103

4.4.3 Outputting the data storage . . . . . . . . . . .105

4.4.4 Clearing the storage . . . . . . . . . . . . . . . . .109

4.5 Data transmission . . . . . . . . . . . . . . . . . . . . . . . .110

4.5.1 Data transmission interval (Int 2) . . . . . . .110

4.5.2 Recorder (analog output) . . . . . . . . . . . . .112

4.5.3 PC/external printer (RS232 interface) . . .113

4.5.4 Remote control . . . . . . . . . . . . . . . . . . . . .114

4.6 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

List of contents

4.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

5 Maintenance, cleaning, disposal . . . . . . . . . . . 121

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

5.1.1 Changing the batteries . . . . . . . . . . . . . . .122

5.1.2 Replacing the roll of printer paper . . . . . .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 Oxi Level 2 precision dissolved oxygen

meter lets you perform D. O. measurements rapidly and

reliably. The inoLab Oxi Level 2 provides the highest degree

of operating comfort, reliability and measuring safety for all

applications.

The integrated printer enables the measurements to be

documented in compliance with GLP. The proven OxiCal®

calibration procedure and special AutoRead function

support your work with the dissolved oxygen 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

4Printer

Overview

1.1 Keyboard

1Paper feed/line feed

(Only with the printer being off -

Print LED lights up red)

2Printer ON/OFF

3Print LED

Red: printer off (offline) or malfunction

Green: printer ready for operation (online)

4Call up calibration procedure

5Select measuring mode

6Display or transmit measured values

7Measuring instrument ON/OFF

8Activate/deactivate AutoRead function

9Store measured value

10 Increase values, scroll

11 Confirm inputs, start AutoRead

12 Reduce values, scroll

Overview

1.2 Display

1.3 Sockets

Connectors:

1D. O. probe with integrated temperature probe

2Stirrer (StirrOx G)

3RS232 interface/analog output

4Plug-in power supply

Status line

Measured value display

Function and

temperature display

Overview

Caution

Only connect probes to the instrument that cannot feed

excessive voltages or currents (> SELV and > circuit with

current limiter). Almost all commercial electrodes -

especially WTW electrodes - meet these requirements.

Caution

On socket 2, use the WTW probe StirrOx G only.

Safety

2 Safety

This operating manual contains basic instructions that you

must follow during the commissioning, operation and

maintenance 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

laboratory. Thus, we assume that, as a result of their

professional training 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

voltage.

Note

Indicates notes that draw your attention to special features.

Note

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

application reports, operating manuals of combination

electrodes, etc.

Safety

2.1 Authorized use

This instrument is authorized exclusively for measuring the

dissolved oxygen in liquid samples in the laboratory.

The technical specifications as given in the chapter 7

TECHNICAL DATA, must be observed. Only the operation and

running of the measuring instrument according to the

instructions given in this operating manual is authorized.

Any other use is considered unauthorized.

2.2 General safety instructions

This instrument is constructed and tested in compliance with

the EN 61010-1 safety regulations for electronic measuring

instruments. It left the factory in a safe and secure technical

condition.

Function and

operational safety

The smooth functioning and operational safety of the

instrument can only be guaranteed if the generally

applicable safety measures and the specific safety

instructions in this operating manual are followed.

The smooth functioning and operational safety of the

instrument can only be guaranteed under the climatic

conditions specified in chapter 7 TECHNICAL DATA.

If the instrument was transported from a cold environment to

a warm environment, the formation of condensate can lead

to the faulty functioning of the instrument. In this event, wait

until the temperature of the instrument reaches room

temperature before putting the instrument back into

operation.

Caution

The instrument is only allowed to be opened by personnel

authorized by WTW.

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