wtw inoLab 740 Operating instructions

inoLab Level 3

with Level 3 terminal

ba12239e03 02/2002

ba12239e

Operating manual

inoLab Level 3

measuring system with

active multifunction boxes

and inoLab Level 3 terminal

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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. Also, we cannot

guarantee that there are absolutely no errors in this manual.

Therefore, we are sure you will understand that we cannot

accept any legal claims resulting from the data, figures or

descriptions.

Warranty We guarantee the instrument described for 3 years from the

date of purchase.

The instrument warranty covers manufacturing faults that

are discovered within the warranty period.

The warranty does not cover components that are replaced

during maintenance work, e. g. batteries.

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.

Copyright

Reprinting - even as excerpts - is only allowed with the

explicit written authorization of WTW GmbH & Co. KG,

Weilheim.

Printed in Germany.

List of contents

3

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 Measuring module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.2 Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.2.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.2.2 Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

1.2.3 Sockets on the terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

1.2.4 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

3.2 Preparing the inoLab Level 3 measuring system . . . . . . . . . . . . . . . . . . . .20

3.3 Switching on the measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

3.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

3.5 Updating the terminal software (firmware) . . . . . . . . . . . . . . . . . . . . . . . . .29

3.5.1 Checking the version no. of the terminal firmware . . . . . . . . . . . . .29

3.5.2 Starting the update of the terminal firmware . . . . . . . . . . . . . . . . .30

4 Basic principles of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

4.1.1 Status display indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

4.1.2 Softkey functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

4.1.3 Symbols in the Menu mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

4.1.4 Display of measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

4.2 Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.2.1 Keys on the terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.2.2 Keys on the measuring module . . . . . . . . . . . . . . . . . . . . . . . . . . .42

4.2.3 IBM PC keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.2.4 Barcode reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.3 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.4 Output of measured data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

4.4.1 Measured data display on the screen . . . . . . . . . . . . . . . . . . . . . .48

4.4.2 Measured data output on the integrated printer . . . . . . . . . . . . . . .49

4.4.3 Outputting measured data to the RS232/REC interface . . . . . . . .49

List of contents

4

5 System settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.1 Date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

5.2 Changing the language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

5.3 Display settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

5.3.1 Display contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

5.3.2 Display illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

5.4 Acoustic signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

5.5 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

5.5.1 Temperature unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

5.5.2 Measuring the temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

5.6 User profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

5.6.1 Opening the Administration menu . . . . . . . . . . . . . . . . . . . . . . . . .62

5.6.2 Opening the Administration window . . . . . . . . . . . . . . . . . . . . . . .62

5.6.3 Creating, editing, or deleting a user profile . . . . . . . . . . . . . . . . . .63

5.6.4 Printing the list of user profiles . . . . . . . . . . . . . . . . . . . . . . . . . . .65

5.7 Password for user names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

5.7.1 Changing the password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

5.7.2 Assigning a password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

5.7.3 Forgotten the password? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

5.8 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

6 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

6.1 Settings for pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

6.1.1 Displaying pH/ISE or measured voltage values . . . . . . . . . . . . . .71

6.1.2 Setting the pH display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

6.1.3 Measured value resolution of voltage display . . . . . . . . . . . . . . . .73

6.1.4 Measured value resolution of pH display . . . . . . . . . . . . . . . . . . . .74

6.1.5 Resetting to default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

6.2 Calibrating pH measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

6.2.1 Buffer sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

6.2.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

6.3 Measuring the pH value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

6.4 Measuring the ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

7 Ion concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

7.1 Settings for ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

7.1.1 Displaying pH/ISE or measured voltage values . . . . . . . . . . . . . .93

7.1.2 Setting up the ISE display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

List of contents

5

7.1.3 Measured value resolution of voltage display . . . . . . . . . . . . . . . .94

7.1.4 Resetting to default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

7.2 Advanced settings for ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

7.2.1 Units of the ISE display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

7.2.2 Blank value correction (Bw Corr) . . . . . . . . . . . . . . . . . . . . . . . . . .96

7.2.3 Reference measurement (Ref Meas) . . . . . . . . . . . . . . . . . . . . . .98

7.2.4 Criterion for AutoRead (AutoRead) . . . . . . . . . . . . . . . . . . . . . . .100

7.3 Calibration for ion-selective measurements . . . . . . . . . . . . . . . . . . . . . . .101

7.3.1 Two-point and three-point calibration . . . . . . . . . . . . . . . . . . . . .105

7.3.2 Four-point to six-point calibration . . . . . . . . . . . . . . . . . . . . . . . . .109

7.4 Measuring the ion concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

7.4.1 Select the measuring method . . . . . . . . . . . . . . . . . . . . . . . . . . .115

7.4.2 Standard Addition (Std Add) . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

7.4.3 Double Standard Addition (Std Add ++) . . . . . . . . . . . . . . . . . . .119

7.4.4 Standard Subtraction (Std Sub) . . . . . . . . . . . . . . . . . . . . . . . . .122

7.4.5 Sample Addition (Smp Add) . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

7.4.6 Sample Subtraction (Smp Sub) . . . . . . . . . . . . . . . . . . . . . . . . .127

7.4.7 Standard addition with blank value correction (Bw Add) . . . . . . .131

8 Dissolved oxygen (D. O.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

8.1 Settings for D. O. measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

8.1.1 Determining the measuring range . . . . . . . . . . . . . . . . . . . . . . . .135

8.1.2 Displaying the air pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

8.1.3 Salinity correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137

8.1.4 Resetting to default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

8.2 Calibrating for D. O. measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

8.2.1 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

8.2.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

8.3 Measuring the D. O. content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

8.3.1 Selecting the measured value display . . . . . . . . . . . . . . . . . . . . .145

8.3.2 Drift control (AutoRead) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

9 BOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

9.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

9.1.1 Operation with the StirrOx G oxygen sensor . . . . . . . . . . . . . . . .150

9.1.2 Operation with a barcode reader . . . . . . . . . . . . . . . . . . . . . . . . .150

9.2 BOD measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

9.2.1 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

9.2.2 Start measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

List of contents

6

9.2.3 Stopping the BOD measurement . . . . . . . . . . . . . . . . . . . . . . . . .159

9.2.4 End measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

9.3 BOD result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165

9.3.1 Displaying, editing and printing the measurement result . . . . . . .165

9.3.2 Deleting BOD measurement results . . . . . . . . . . . . . . . . . . . . . .168

9.4 Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

9.4.1 Setting up routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

9.4.2 Starting a measurement with routine . . . . . . . . . . . . . . . . . . . . . .172

9.4.3 Deleting routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

10 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

10.1 Settings for conductivity measurements . . . . . . . . . . . . . . . . . . . . . . . . . .175

10.1.1 Determining the measuring range . . . . . . . . . . . . . . . . . . . . . . . .175

10.1.2 Entering the reference temperature . . . . . . . . . . . . . . . . . . . . . . .177

10.1.3 Displaying the conductivity or specific resistance . . . . . . . . . . . .178

10.1.4 Setting the temperature compensation . . . . . . . . . . . . . . . . . . . .179

10.1.5 Reset (Reset) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

10.2 Determining/setting up the cell constant . . . . . . . . . . . . . . . . . . . . . . . . . .182

10.2.1 Determining the cell constant (calibration) . . . . . . . . . . . . . . . . .182

10.2.2 Setting the cell constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186

10.3 Measuring the conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

10.3.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

10.3.2 Displaying the conductivity, dry filtrate residue or salinity . . . . . .190

10.3.3 Drift control (AutoRead) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192

11 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

11.1 Storage of measurement data records . . . . . . . . . . . . . . . . . . . . . . . . . . .194

11.1.1 Saving individual measurement data records . . . . . . . . . . . . . . .194

11.1.2 Automatically storing measurement data records . . . . . . . . . . . .196

11.1.3 Displaying stored measurement data records . . . . . . . . . . . . . . .199

11.1.4 Deleting stored measurement data records . . . . . . . . . . . . . . . .204

11.2 Storage of system configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206

11.2.1 Saving the system configuration . . . . . . . . . . . . . . . . . . . . . . . . .206

11.2.2 Recalling a system configuration . . . . . . . . . . . . . . . . . . . . . . . . .207

11.2.3 Deleting a system configuration . . . . . . . . . . . . . . . . . . . . . . . . .209

11.3 Storage of calibration records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

12 Data output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

12.1 Data output to the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213

List of contents

7

12.1.1 Numerical display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213

12.1.2 Graphical display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214

12.2 Outputting data to the integrated printer . . . . . . . . . . . . . . . . . . . . . . . . . .218

12.2.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218

12.2.2 Switching on the integrated printer . . . . . . . . . . . . . . . . . . . . . . .219

12.2.3 Data output to the integrated printer . . . . . . . . . . . . . . . . . . . . . .219

12.2.4 Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220

12.3 Outputting data to an external printer/PC . . . . . . . . . . . . . . . . . . . . . . . . .224

12.3.1 Outputting data to the RS232/REC interface . . . . . . . . . . . . . . . .225

12.3.2 Setting the baud rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225

12.3.3 Determining the data format . . . . . . . . . . . . . . . . . . . . . . . . . . . .226

12.3.4 Setting the print interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .228

12.3.5 Outputting data to an external printer or PC . . . . . . . . . . . . . . . .229

12.4 Outputting data to the external recorder . . . . . . . . . . . . . . . . . . . . . . . . .230

13 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

13.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233

13.1.1 Replacing the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233

13.1.2 Changing the roll of paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234

13.1.3 Maintenance of the probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234

13.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235

13.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235

14 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

14.1 Terminal messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237

14.2 Printer messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238

14.3 pH/voltage system messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239

14.4 Ion concentration system messages . . . . . . . . . . . . . . . . . . . . . . . . . . . .242

14.5 Oxygen system messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .244

14.6 Conductivity system messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246

15 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

15.1 Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248

15.2 Measuring module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .252

15.3 pH/electromotive force of the electrode: . . . . . . . . . . . . . . . . . . . . . . . . . .253

15.4 Ion concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255

15.5 Dissolved oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .256

List of contents

8

15.6 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .258

16 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

16.1 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262

16.2 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264

16.3 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271

Overview

9

1Overview

The inoLab Level 3 measuring system is suitable for

operating with an inoLab Level 3 terminal and also with a

PC.

This manual contains a description of the operation of

inoLab Level 3 with terminal.

Note

The operation of inoLab Level 3 measuring modules on the

PC with the MultiLab pilot software is described in a

separate operating manual.

The newest software version of MultiLab pilot is available on

the Internet under http://www.wtw.com.

Note

Information on other accessories is given in the WTW

catalog, L

ABORATORY AND FIELD INSTRUMENTATION, or is

available via the Internet.

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Terminal

Measuring module (active

multifunction box)

Overview

10

1.1 Measuring module

The inoLab Level 3 measuring system works together with

the following inoLab Level 3 active multifunction boxes:

pH, pH/ION, Oxi, BSB/BOD, Cond, pH/Oxi, pH/Cond and

Multi.

Each inoLab Level 3 measuring module has its own fixed

software in order to process the probe signals and to

communicate with the terminal.

A detailed description of the operating elements on the

measuring module can be found in chapter 4 B

ASIC

PRINCIPLES OF OPERATION.

Measuring module

Overview

11

1.2 Terminal

The terminal is both the display and entry unit of the system.

The settings for the measurement and display of the

measured values are menu-driven via the display. The

terminal is optionally equipped with an integrated printer.

The terminal recognizes the type of inoLab Level 3

measuring module connected and the probe operated with

the measuring module via the connection cable.

1.2.1 Display

The measured value, active functions or settings and

available menu items that are displayed always correspond

to the active probe and the selected measured variable.

The display of the terminal shows:

1 Menu line to select the measuring and display

settings

2 Type of temperature measurement, i.e. manual

entry, external or integrated temperature probe

3 Status line that displays the active functions and

settings

4 Softkey functions

5 Current measured temperature value

6 Current measured value

7 Selected measured variable

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Overview

12

1.2.2 Keys

The inoLab Level 3 measuring system has a keypad on the

terminal and one on the measuring module. The terminal

keys operate the entire measuring system. Using the

g

and

a keys on the measuring module, you can also

operate the AutoRead function (drift control) on the

measuring module. The LED on the measuring module

shows the AutoRead status.

The topmost row of keys on the terminal consists of

softkeys.

Each softkey carries out the softkey function that is

displayed directly above the key.

A detailed diagram and description of the keys and softkeys

is given in chapter 4 B

ASIC PRINCIPLES OF OPERATION.

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Terminal

Measuring module

Overview

13

1.2.3 Sockets on the terminal

Warning

The line voltage on site must lie within the input voltage

range of the original plug-in power supply unit. Use original

plug-in power supplies only (see chapter 15 T

ECHNICAL

DATA).

Connections:

1 Plug-in power supply unit

2 inoLab Level 3 measuring module

3 RS 232 interface/analog output

4 IBM PC keyboard (via adapter cable

AK T-K PS2)

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Overview

14

1.2.4 Firmware

The inoLab Level 3 terminal software (firmware) can be

updated. You can always install the newest software version

for the terminal via a connected PC and a special update

program.

The details of the update are given insection 3.5 and in the

installation program for the update.

Note

Further information on the latest software version is

available from WTW or on the Internet under

http://www.WTW.com.

The addresses and telephone numbers of the WTW

subsidiaries are given on the cover of this operating manual.

Safety

15

2 Safety

This operating manual contains basic instructions that must

be followed in the commissioning, operation and

maintenance of the inoLab Level 3 (terminal and measuring

module) measuring system. Consequently, all responsible

personnel must read this operating manual carefully before

working with the measuring system.

The operating manual must always be available within the

vicinity of the measuring system.

Target group The measuring system 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

Warning

indicates safety instructions that must be followed to prevent

damage to persons and property.

Note

indicates notes that draw your attention to special features.

Note

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

application reports, operating manuals of probes, etc.

Safety

16

2.1 Authorized use

This measuring system is authorized exclusively for

potentiometric, conductimetric or amperometric

measurements in the laboratory.

The technical specifications as given in chapter 15

T

ECHNICAL 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 measuring system 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

operating safety

The smooth functioning and operational safety of the

measuring system can only be guaranteed if the generally

applicable safety measures and the specific safety

instructions in this operating manual are followed during

operation.

The smooth functioning and operational safety of the

instrument can only be guaranteed under the environmental

and electrical operating conditions that are in specified in

chapter 15 T

ECHNICAL DATA.

If the measuring system was transported from a cold

environment to a warm environment, the formation of

condensate can impair the functioning of the measuring

system. In this event, wait until the temperature of the

measuring system reaches room temperature before putting

the measuring system back into operation.

Warning

The measuring system is only allowed to be opened by

personnel authorized by WTW.

Safety

17

Safe operation If safe operation is no longer possible, the measuring

system must be taken out of service and secured against

inadvertent operation!

Safe operation is no longer possible if the measuring system

(terminal or measuring module):

l has been damaged in transport

l has been stored under adverse conditions for a lengthy

period of time

l is visibly damaged

l no longer operates as described in this manual.

If you are in any doubt, please contact the supplier of the

measuring system.

Obligations of the

purchaser

The purchaser of this measuring system must ensure that

the following laws and guidelines are observed when using

dangerous substances:

l EEC directives for protective labor legislation

l National protective labor legislation

l Safety regulations

l Safety datasheets of the chemical manufacturers.

Safety

18

Commissioning

19

3 Commissioning

3.1 Scope of delivery

l The inoLab Level 3 Set includes: inoLab Level 3 terminal,

Level 3 measuring module and probe

(depending on the composition of the inoLab Level 3 set)

l Operating and display instrument

– inoLab Level 3 terminal

– Plug-in power supply with country-specific adapters

(for Great Britain, United States of America, Europe

and Australia)

– RS 232 interface cable, AK T-PC

(for data transmission on the PC and software update).

l Measuring module (active multifunction box)

– inoLab Level 3 measuring module (depending on how

the set is made up)

– Connecting cable (AK M-T) from the measuring

module to the terminal

– Stand rod

– Probe holder

– Locking holder for non-active probes

– for BSB/BOD measuring module:

Adapter cable AK T-K PS2 for connecting a barcode

reader or an IBM-PC keyboard to the measuring

module

l Software MultiLab pilot on CD-ROM

l Connecting cable AK M-PC from the measuring module

to the PC

l Operating manual for terminal and measuring module

Commissioning

20

3.2 Preparing the inoLab Level 3 measuring

system

A measuring module that is ready for operation looks as

follows:

1 Cable holder

2 Stand rod

3 Opening to the cable shaft

4 Connection cable to the terminal (AK M-T)

6 Locking holder

7 Beaker with test solution

8 Probe

9 Freely adjustable probe holder

10 Locking key for probe holder

11 Connection cable: Probe - measuring module

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wtw inoLab 740, inoLab Level 3 Operating instructions

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