Metrohm 900 Touch Control Manual User Manual Page 503
- Page / 541
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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31 Troubleshooting
900 Touch Control
￭￭￭￭￭￭￭￭
487
31.9 STAT titration
Problem Cause Remedy
The control point is
not kept stable.
The control parameters are
unsuitable.
Adjust the control parameters (see Chapter
29.7.2, page 354):
￭ Define Titration rate = user and reduce
the minimum rate (Min. rate).
￭ Define Titration rate = user and increase
the control range.
The stirring rate is too low. Stir faster.
The arrangement of elec-
trode and buret tip is not
optimum.
Arrange the electrode and buret tip to an opti-
mum (see manual of control device).
The cylinder volume of the
exchange/dosing unit is
too large.
Use an exchange/dosing unit with a smaller
cylinder volume (yields a smaller minimum vol-
ume increment).
The electrode responds too
slowly.
Replace the electrode.
It takes an unex-
pectedly long time
for the control point
to be reached.
The control parameters are
unsuitable.
Adjust the control parameters (see Chapter
29.7.2, page 354):
￭
￭ Define Titration rate = user and reduce
the control range.
￭ Define Titration rate = user and increase
the minimum rate (Min. rate).
￭ Define Titration rate = user and increase
the maximum rate (Max. rate).
- 900 Touch Control 1
- Table of contents 5
- 7 System settings 22 6
- 8 Titrants 41 6
- 9 Reagents 61 6
- 10 Sensors 66 6
- 11 Device manager 79 7
- 12 File manager 119 7
- 13 GLP manager 127 8
- 14 Common variables 139 8
- 15 Templates 145 8
- 16 Methods 165 8
- 25 Statistics 229 10
- 26 Result table 234 10
- 27 Printing 240 10
- 28 Manual control 248 10
- 29 Parameters 276 11
- 31 Troubleshooting 482 14
- 32 Appendix 488 14
- 34 Warranty (guarantee) 517 15
- 35 Accessories 519 15
- Index 521 15
- Table of figures 16
- 1 Introduction 17
- 1.3 About the documentation 19
- 2 Safety instructions 21
- 2.5 Recycling and disposal 23
- 3 Overview of the instrument 24
- 3 Overview of the instrument 25
- 4 Installation 26
- 5 Titrations 27
- 5.3 Endpoint titration (SET) 28
- 6 Operation 31
- 6.2.1 Touch-sensitive screen 33
- 6.2.3 Status display 34
- 7 System settings 38
- 7.3 User administration 44
- 7.3.3 Defining login options 49
- 7.3.4 Password options 51
- 7.3.5 Modification options 53
- 7.3.6 Reasons 54
- 7.3.7 Audit Trail 55
- 7.4 Measured value display 56
- 7.5 Acoustic signals 56
- 8 Titrants 57
- 8.1 Adding a new titrant 58
- 8.2 Editing titrant data 59
- 8.4 Dosing unit 62
- 8.4.2 Tubing parameters 64
- 8 Titrants 67
- 8.5 Exchange unit 68
- 8.5.2 Tubing parameters 70
- 8.7.1 Titer validity 74
- 9 Reagents 77
- 9.1 Editing reagent data 78
- 9.2 Reagent monitoring 78
- 10 Sensors 82
- 10.1 Adding a new sensor 83
- 10.2 Editing the sensor data 84
- 11 Device manager 95
- 11.1 Adding a new device 96
- 11.3 Touch Control 97
- 11.3.1 E-mail 98
- 11.3.2 PC/LIMS report 99
- 11.3.3 Shared memory 100
- ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 101
- ￭￭￭￭￭￭￭￭ 101
- 11.3.4 TCP/IP settings 102
- 11.4 Metrohm control devices 103
- 11.5 USB Sample Processor 107
- 11.5.2 Properties – Tower 109
- 11.6 Sample racks 115
- 11.6.1 Editing rack data 117
- 11.6.2 Rack adjustment 123
- 11.7 Printer 124
- 11.7.1 PDF settings 125
- 11.7.2 Network printer 126
- 11.8 Balance 128
- 11.9 USB/RS-232 adapter 130
- 11.10 PC keyboard 131
- 11.11 Barcode reader 133
- 12 File manager 135
- 12.1.1 Copying a file 137
- 12.1.2 Renaming a file 137
- 12.1.3 File properties 138
- 12.2 External storage medium 139
- 12.3.1 Restoring data 141
- 13 GLP manager 143
- 13.1 Automatic system test 144
- 13.2 Test tools 144
- 13.3.1 Parameter description 146
- 13.4 System validation 149
- 13.4.1 Parameter description 150
- 13.5 System monitoring 153
- 13.5.2 Backup interval 154
- 14 Common variables 155
- 14.3 Monitoring validity 158
- Save the settings 160
- 15 Templates 161
- 15.2 Custom result templates 165
- 15.3 Input lines 169
- 15.4 Output lines 171
- 15.6 Report header 176
- 15.7 Custom electrode type 177
- Input range 0 - 999 s 180
- Default value 60 s 180
- 16 Methods 181
- 16.2 Saving a method 182
- 16.3 Loading a method 183
- 16.4 Editing a method 184
- 16.4.1 Inserting a command 185
- 16.5 Method options 186
- 16.5.1 Start options 187
- 16.5.2 Stop options 189
- 16.5.3 Sample data 190
- 16.5.4 Method properties 194
- 16.5.5 Note 196
- 17 Electronic signatures 198
- 18 Control 200
- Continue the sample series 203
- 19 Favorites 204
- 19.1 Creating favorites 205
- 20 Sample data 208
- 21 Sample table 211
- 21.2 Edit the sample data 214
- 21.3 Properties 216
- 22 Determination run 219
- 23 Live modifications 222
- 23.3 Live display 224
- 23.4 Live parameters 226
- 24.1 More determination data 229
- 24.1.1 Details 230
- 24.2 Messages 232
- 24.3 Local common variables 233
- 24.5 Loading a determination 236
- 24.5.1 Determination list 237
- 24.6 Saving a determination 241
- 24.7 Curves 241
- 25 Statistics 245
- 26 Result table 250
- 26.1 Properties 251
- 26.2 Saving the result table 255
- 27 Printing 256
- 27.1 General report options 258
- 28 Manual control 264
- 28.2 Measuring 266
- 28.2.1 Parameter description 267
- 28.3 Dosing 270
- 28.3.1 Continuous dosing 272
- 28.3.2 Dosing fixed volumes 274
- 28.3.3 Preparing 276
- 28.3.4 Emptying 277
- 28.3.5 Filling 278
- 28.3.6 Replacing reagent 278
- 28.4 Stirring 279
- 28.6 Remote 281
- 28.7 USB Sample Processor 282
- 28.7.1 Moving the lift 284
- 28.7.3 External positions 288
- 29 Parameters 292
- 29.1.2 Titration parameters 295
- 29.1.3 Stop conditions 299
- 29.1.5 Control device 305
- 29.1.6 Sensor 306
- 29.1.7 Dosing device 307
- 29.1.8 Stirrer 308
- 29.2.1 Start conditions 309
- 29.2.2 Titration parameters 312
- 29.2.3 Stop conditions 315
- 29.2.5 Control device 321
- 29.2.6 Sensor 322
- 29.2.7 Dosing device 323
- 29.2.8 Stirrer 324
- 29.3.1 Start conditions 325
- 29.3.2 Control parameters 326
- 29.3.3 Titration parameters 330
- 29.3.4 Stop conditions 331
- 29.3.5 Conditioning 332
- 29.3.6 Cell 334
- 29.3.7 Control device 334
- 29.3.8 Sensor 334
- 29.3.9 Dosing device 336
- 29.3.10 Stirrer 337
- 29.4.1 Start conditions 337
- 29.4.2 Control parameters 339
- 29.4.3 Titration parameters 342
- 29.4.4 Stop conditions 343
- 29.4.5 Conditioning 344
- 29.4.6 Cell 346
- 29.4.7 Control device 346
- 29.4.8 Sensor 347
- 29.4.9 Dosing device 348
- 29.4.10 Stirrer 349
- 29.5.1 Control parameters 350
- 29.5.2 Titration parameters 352
- 29.5.3 Stop conditions 353
- 29.5.4 Conditioning 353
- 29.5.5 Cell 356
- 29.5.6 Control device 357
- 29.5.7 Sensor 357
- 29.5.8 Stirrer 358
- 29.6.1 Control parameters 359
- 29.6.2 Titration parameters 362
- 29.6.3 Stop conditions 363
- 29.6.4 Conditioning 363
- 29.6.5 Cell 365
- 29.6.6 Control device 366
- 29.6.7 Sensor 366
- 29.6.8 Stirrer 367
- 29.7 STAT titrations (STAT) 368
- 29.7.2 Control parameters 370
- 29.7.3 Titration parameters 372
- 29.7.4 Stop conditions 374
- 29.7.5 Monitoring 375
- 29.7.6 Control device 382
- 29.7.7 Sensor 382
- 29.7.8 Dosing device 383
- 29.7.9 Stirrer 386
- 29.8 Manual titrations (MAT) 387
- 29.8.2 Control device 388
- 29.8.3 Sensor 388
- 29.8.4 Dosing device 389
- 29.8.5 Stirrer 392
- 29.9 Measurements (MEAS) 393
- 29.9.2 Standard addition 397
- 29.9.3 Control device 401
- 29.9.4 Sensor 401
- 29.9.5 Stirrer 403
- 29.10.4 Control device 413
- 29.10.5 Sensor 413
- 29.10.6 Stirrer 414
- 29.11.2 Control device 417
- 29.11.3 Sensor 418
- 29.11.4 Stirrer 419
- 29.11.5 Further information 419
- 29.12 Evaluations (EVAL) 421
- Measured value 427
- Volume / Time 427
- 29.13 Calculations 431
- 29.13.3 Formula editor 440
- 29.13.3.3 Variable list 443
- 29.14 Reports (REPORT) 446
- 29.14.3 List of reports 448
- 29.16 Communication 478
- 29.17 Automation 483
- 29.18 Miscellaneous commands 492
- 29.18.3 Scan data (REQUEST) 493
- 30 Operation and maintenance 496
- 31 Troubleshooting 498
- 31.4 Printing 499
- 31.5 Manual control 499
- 31.6 Miscellaneous 500
- 31.7 SET titration 500
- 31.8 Karl Fischer titration 501
- 31.9 STAT titration 503
- 32 Appendix 504
- 32.2 Exchange unit 505
- 32.3 Stirring rate 505
- -15 -10 -5 0 5 10 15 506
- 32.8 Using AuditTrailViewer 514
- 32.9 Diagnosis 519
- 32.9.9 Service 527
- 33 Technical specifications 530
- 33.2 Interfaces 531
- 33.3 Power supply 531
- 33.4 Safety specifications 531
- 33.6 Ambient temperature 532
- 33.7 Dimensions 532
- 34 Warranty (guarantee) 533
- 35 Accessories 535
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