Metrohm 848 Titrino plus Manuel d'utilisateur Page 114
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7.3 Endpoint titrations (SET)
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848 Titrino plus
Measuring mode Upol:
Input range 0.01 - 125.00 µA
Default value 10.00 µA
Selection off
Max. rate
This parameter is visible only when Titration rate = user.
Rate at which dosing is carried out outside of the control range. The maxi-
mum dosing rate depends on the cylinder volume (see Chapter 10.1.1,
page 117).
Input range 0.01 - 166.00 mL/min
Default value 10.00 mL/min
Selection max.
Min. rate
This parameter is visible only when Titration rate = user.
Rate at which dosing is carried out at the very beginning of the titration
and in the control range at the end of the titration. This parameter has a
decisive influence on the titration rate and thus also on the accuracy. The
smaller the selected minimum rate, the slower the titration.
Input range 0.01 - 9999.00 µL/min
Default value 25.00 µL/min
Table 3 Standard values for predefined titration rates for SET
Titration rate
slow optimal fast
Dynamics
– pH
– U und Ipol
– Upol
5.000
300.0 mV
40.00 µA
2.000
100.0 mV
10.00 µA
0.500
30.0 mV
5.00 µA
Max. rate 1.00 mL/min 10.00 mL/min maximum
Min. rate 5.00 µL/min 25.00 µL/min 50.00 µL/min
Stop criterion
The titration is stopped when the endpoint has been reached and this
stop criterion has been fulfilled. If no stop criterion has been selected then
the titration will not be stopped. The stop conditions (see Chapter 7.3.6,
page 105) always lead to a stop, even if the stop criterion has not been
reached.
- 848 Titrino plus 1
- Table of contents 5
- 6 System settings 52 6
- 7 Parameters 68 7
- 9 Troubleshooting 115 7
- 10 Appendix 117 8
- 12 Warranty (Guarantee) 135 8
- 13 Accessories 137 8
- Index 144 8
- Table of figures 9
- 1 Introduction 11
- 1.2 About the documentation 12
- 1.3 Safety instructions 14
- 1.3.5 Recycling and disposal 15
- 2 Overview of the instrument 17
- 3 Installation 19
- 3.3 Connecting a stirrer 21
- 3.4 Connecting a balance 22
- 6.2148.030 25
- 4 Titrations 27
- 4.3 Endpoint titration (SET) 28
- 5 Operation 29
- 5.2.1 The keypad 30
- 5.3 Formula editor 33
- 5.4 Methods 35
- 5.4.2 Saving a method 36
- 5.4.3 Loading a method 37
- 5.4.4 Exporting a method 38
- 5.5 Control 39
- 5.6 Sample data 40
- 5.7 Sample table 42
- 5.9 Live modifications 47
- 5.10 Results 50
- 5.11 Statistics 51
- 5.13 Manual Control 54
- 5.13.1 Dosing 55
- 5.13.2 Measuring 59
- 5.13.3 Stirring 60
- 6 System settings 62
- 6.2 Managing sensors 66
- 6.3 Managing solutions 68
- 6.4.1 General 70
- 6.5 File management 72
- 6.7 Instrument diagnosis 76
- 6.7.2 Diagnosis functions 77
- 7 Parameters 78
- 7.1.2 Titration parameters 79
- 7.1.3 Stop conditions 84
- 7.1.4 Evaluation 86
- 7.1.5 Calculation 89
- 7.1.6 Statistics 91
- 7.1.7 Reports 91
- 7.2.1 Start conditions 93
- 7.2.2 Titration parameters 94
- 7.2.3 Stop conditions 99
- 7.2.4 Evaluation 100
- ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 101
- ￭￭￭￭￭￭￭￭ 101
- 7.2.5 Calculation 103
- 7.2.6 Statistics 105
- 7.2.7 Reports 105
- 7.3.1 Conditioning 107
- 7.3.2 Start conditions 108
- 7.3.3 Titration parameters 110
- 7.3.4 Control parameters EP1 112
- 7.3.5 Control parameters EP2 115
- 7.3.6 Stop conditions 115
- 7.3.7 Calculation 116
- 7.3.8 Statistics 118
- 7.3.9 Reports 118
- 7.4 pH calibration (CAL) 120
- 7.4.2 Buffers 122
- 7.4.3 Reports 123
- 8 Operation and maintenance 124
- 9 Troubleshooting 125
- 9.2 Miscellaneous 126
- 10 Appendix 127
- 10.2 Stirring rate 128
- 10.3 Balance 128
- 10.4 USB devices 129
- 10.4.3 PC mouse 130
- 10.5 System initialization 131
- 10.6 Remote interface 132
- Titration mode DET/MET 134
- Titration mode SET 134
- Figure 24 134
- Remote status diagram SET 134
- 11 Technical specifications 140
- 11.1.3 Temperature 141
- 11.2 Dosing drive 142
- 11.3 Interfaces 142
- 11.4 Mains connection 142
- 11.5 Safety specifications 142
- 11.7 Ambient temperature 143
- 11.8 Reference conditions 144
- 11.9 Dimensions 144
- 12 Warranty (Guarantee) 145
- 13 Accessories 147
- 13.2 Optional accessories 148
- 13.2 Optional accessories 150
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