Wtw OxiTop C Manuale utente

ba31114e06 06/2012

OxiTop®

Operating manual

OC 100

ON/OFF

GLP

RUN/ENTER

-C

Controller

OxiTop®OC 100

Measuring head

OxiTop®C

OxiTop®Control OC 100

2 ba31114e06 06/2012

Reproduction in whole - or even in part - is prohibited without the express

written permission of WTW GmbH, Weilheim.

Printed in Germany.

OxiTop®Control OC 100 - Contents

OxiTop®Control OC 100 Contents

ba31114e06 06/2012 3

1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.1 The system OxiTop®Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2 The measurement principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.3 Data management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Literature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1.1 Safety information in the operating manual . . . . . . . . . . . . 9

2.1.2 Safety signs on the instrument . . . . . . . . . . . . . . . . . . . . . 9

2.2 Safe operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.1 Authorized use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.2 Requirements for safe operation . . . . . . . . . . . . . . . . . . . 10

2.2.3 Unauthorized use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2.1 Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2.2 Battery status signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2.3 Energy saving feature (automatic switch-off). . . . . . . . . . 12

3.3 Initial commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3.1 Inserting the supply battery holder - controller. . . . . . . . . 12

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1 General operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.1 Keys - controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.2 Socket field - controller . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2 Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2.1 Switching on the controller. . . . . . . . . . . . . . . . . . . . . . . . 16

4.2.2 Switching on the measuring heads . . . . . . . . . . . . . . . . . 16

4.3 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3.2 Menus, functions and dialogs . . . . . . . . . . . . . . . . . . . . . 17

4.3.3 The course of the measurement . . . . . . . . . . . . . . . . . . . 18

5 Operating mode: BOD Standard / BOD Routine . . . . . . . . . 19

5.1 Sample preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2 Starting the measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.3 Calling up all data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.4 SAMPLE STATUS TYPE list (sample management) . . . . . . . . 24

5.4.1 Showing a sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Contents OxiTop®Control OC 100

4ba31114e06 06/2012

5.4.2 Erasing data of finished samples . . . . . . . . . . . . . . . . . . 26

5.4.3 Showing the measuring head list . . . . . . . . . . . . . . . . . . 27

5.4.4 Calling up data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.4.5 Calling up data - Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.5 Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.5.1 Sample statistics (BOD Standard operating mode) . . . . 31

5.5.2 Excluding a curve (BOD Standard operating mode) . . . 32

5.5.3 Cursor interrogation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.5.4 Curves display for cold samples. . . . . . . . . . . . . . . . . . . 34

5.5.5 Measured values outside the measuring range . . . . . . . 35

6 Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7GLP/TOOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7.1 GLP/TOOLS main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7.2 Show free measuring heads . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.3 Show settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.4.1 Operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.4.2 Operational life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.4.3 Date/time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.4.4 GLP (BOD Standard operating mode). . . . . . . . . . . . . . 42

7.4.5 GLP - calibration interval (- Calinterval) . . . . . . . . . . . . . 43

7.4.6 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7.4.7 AutoTemp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

7.4.8 Switch-off interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

7.4.9 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

7.5 Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

7.5.1 Showing the measuring heads . . . . . . . . . . . . . . . . . . . . 47

7.5.2 Measuring head information . . . . . . . . . . . . . . . . . . . . . . 48

7.5.3 Controller information . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

7.5.4 cal-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

7.5.5 Pneumatic test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

7.6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.6.1 Erasing finished samples . . . . . . . . . . . . . . . . . . . . . . . . 54

7.6.2 Reset/release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

7.6.3 Restoring data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

8.1 Achat OC software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9 Maintenance, cleaning, disposal. . . . . . . . . . . . . . . . . . . . . . 61

9.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

9.1.1 General maintenance activities . . . . . . . . . . . . . . . . . . . 61

9.1.2 Replacing the supply batteries (controller) . . . . . . . . . . . 61

9.1.3 Replacing the data backup battery (controller). . . . . . . . 63

9.1.4 Changing the supply battery (measuring head) . . . . . . . 65

9.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

9.2.1 Cleaning of the sample bottles . . . . . . . . . . . . . . . . . . . . 66

9.2.2 Cleaning of the controller and measuring heads . . . . . . 66

9.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

OxiTop®Control OC 100 Contents

ba31114e06 06/2012 5

10 What to do if.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

10.1 Display messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

10.2 Display messages on the charging status of the batteries . . . 72

10.2.1 Batteries in the controller . . . . . . . . . . . . . . . . . . . . . . . . 72

10.2.2 Battery in the measuring head . . . . . . . . . . . . . . . . . . . . 72

10.3 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

11 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

11.1 Controller OxiTop®OC 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

11.2 OxiTop®-C measuring head. . . . . . . . . . . . . . . . . . . . . . . . . . . 78

12 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Contents OxiTop®Control OC 100

6ba31114e06 06/2012

OxiTop®Control OC 100 Overview

ba31114e06 06/2012 7

1 Overview

1.1 The system OxiTop®Control

The classical application field for the OxiTop®measuring heads and controller

is the BODx determination (BODx = Biochemical Oxygen Demand for the time

x). The evaluation of biological degradability (e.g. test according to OECD

301F) is also part of this field.

With different sample vessels, the OxiTop®-C measuring heads in conjunction

with the OxiTop®Controller 110 can also be used in other areas such as

Evaluation of respiration and toxicity in earth, sludge, waste and sediment

(e.g. extraction of contaminated earth according to recovery concepts)

Evaluation of the respiration rate of cell cultures

Microbiological growth and stress examinations

Measurement of anaerobic degradation processes (e.g. biogas determina-

tion)

Accessories: see WTW catalog and price list

1.2 The measurement principle

The respirometric measurement is a pressure measurement. If oxygen is

consumed in a closed vessel at a constant temperature, a negative pressure

develops. If a gas is released, an overpressure develops. The OxiTop®-C

measuring head measures and stores this pressure for the whole duration of a

measurement once started.

The OxiTop®OC 100 controller collects the pressure values from the

measuring heads and processes them.

The formula shown below is the basis for all calculations for the BOD using the

values from the OxiTop®-C measuring head.

The interpretation of the pressure differences in the temporal course depends

on the measured material and its preparation and on the sample manipulation

(e. g. intermediate aerations) during the measuring period.

1.3 Data management

The measuring head records the measured values and stores the measuring

data. Using the controller, the collected and stored data are read out from the

measuring head and stored in the “sample management“. Starting at the

OxiTop®sample management, it is possible to make the graphical and statis-

tical evaluation of the sample data.

The data can be transferred from the controller to a computer via the RS232

interface. The read-out software Achat OC facilitates to process the stored data

further.

Overview OxiTop®Control OC 100

8ba31114e06 06/2012

Additionally, the data can be transferred to an IR printer via the IR interface.

1.4 Literature

Further information and application reports on the subject of measuring with the

system OxiTop®Control can be obtained at no cost from WTW:

CD-ROM applications for OxiTop®Control

CD-ROM Principles of measuring technique

OxiTop®Control OC 100 Safety

ba31114e06 06/2012 9

2Safety

2.1 Safety information

2.1.1 Safety information in the operating manual

This operating manual provides important information on the safe operation of

the instrument. Read this operating manual thoroughly and make yourself

familiar with the instrument before putting it into operation or working with it.

The operating manual must be kept in the vicinity of the instrument so you can

always find the information you need.

Important safety instructions are highlighted in this operating manual. They are

indicated by the warning symbol (triangle) in the left column. The signal word

(e.g. "CAUTION") indicates the danger level:

NOTE

indicates a possibly dangerous situation where goods might be damaged

if the actions mentioned are not taken.

2.1.2 Safety signs on the instrument

Note all labels, information signs and safety symbols on the instrument. A

warning symbol (triangle) without text refers to safety information in this oper-

ating manual.

2.2 Safe operation

2.2.1 Authorized use

Only the operation and running of

the instrument according to the instructions and technical specifications given

in this operating manual is authorized (see section 11 TECHNICAL DATA, page

77).

Any other use is considered unauthorized.

WARNING

indicates a possibly dangerous situation that can lead to seri-

ous (irreversible) injury or death if the safety instruction is not

followed.

CAUTION

indicates a possibly dangerous situation that can lead to slight

(reversible) injury if the safety instruction is not followed.

Safety OxiTop®Control OC 100

10 ba31114e06 06/2012

2.2.2 Requirements for safe operation

Note the following points for safe operation:

• The instrument may only be operated according to the authorized use spec-

ified above.

• The instrument may only be supplied with power by the energy sources

mentioned in this operating manual.

• The instrument may only be operated under the environmental conditions

mentioned in this operating manual.

• The instrument may only be opened if this is explicitly described in this oper-

ating manual (example: Changing the batteries).

2.2.3 Unauthorized use

The instrument must not be put into operation if:

• it is visibly damaged (e.g. after being transported)

• it was stored under adverse conditions for a lengthy period of time (storing

conditions, see section 11 TECHNICAL DATA, page 77).

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