Metrohm 792 Basic IC User Manual Page 99
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4 Operation
792 Basic IC
90
4.4.4 Integration
792 BASIC IC / Method / Integration
This menu item opens the
Integration parameters
window that contains
parameters and events for peak integration and consists of the follow-
ing two tabs:
Setup
Integration parameters.
Events
Integration events.
The
«
792 Basic IC
»
software includes a built-in automatic integration
algorithm to detect peaks on the chromatographic curve and to evalu-
ate them using calculated baselines. The integration procedure is tuned
by the integration parameters on the
Setup
tab and the integration
events on the
Events
tab. Integration events have higher priority than in-
tegration parameters. The integration can be modified manually using
the peak editor (see
section 4.5.4
).
The built-in integrator algorithm is based on the use of the first deriva-
tive (slope). In order to decide whether the slope at some point is sig-
nificant, the first derivative value is divided by the baseline noise and
the result is compared with a threshold value called “
Slope
”. The
threshold values for the upslope and down slope differ.
The baseline and the start and end points are determined for each
peak. For separated peaks, the baseline consists of a straight line be-
tween the start point and the end point. For overlapping neighboring
peaks, a common baseline is normally constructed; this connects the
start point of the first peak with the end point of the last peak. The
peaks are separated from one another by dropping a perpendicular line
from the lowest point (valley) between the peaks to the common base-
line. Alternatively, the baseline can also be drawn directly between the
valleys of the peaks with the event
Enable valley-to-valley
(see integration
events for baseline).
Single
peak
Peak apex
Merged peaks
Drop line
Valley point
Baseline
Peak end
Peak start
- BasicBasic 1
- Table of contents 2
- Notes – Maintenance – Faults 5
- Appendix 6
- List of figures 7
- 1 Introduction 10
- 1 Introduction 15
- 1.733.0110 Detector block) 15
- 1.3.1 Organization 17
- SYSTEM STATE 18
- <OK> 18
- 1.4 Safety notes 19
- 2 Installation 20
- 2.2.1 Packaging 22
- 2.2.2 Check 22
- 2.2.3 Location 22
- 2.3.5 Filter unit PEEK 25
- 2.4 Mains connection 26
- 2.4.2 Fuses 27
- 2.5 Connection to the PC 28
- 2.5.3 Basic settings 29
- Hardware 31
- Hardware settings 31
- Cell constant 31
- 2.6 High-pressure pump 32
- File / Open / System 34
- Default.smt 34
- <Open> 34
- 2 mL/min 35
- <Send to unit> 35
- Injector 38
- Flow rate 39
- <On> 39
- <Off> 39
- 2.8 Suppressor module 44
- 2.9 Putting into operation 50
- Suppressed anion 51
- Prep MSM.smt 51
- Startup determination 52
- 2 Installation 53
- 3 Operating tutorial 54
- 3.2 Preparations 55
- 3.3 Calibration 56
- <Concentrations> 61
- <Calibrate> 61
- 3.4 Sample determination 63
- 4 Operation 66
- 4.1.2 Glossary 67
- 4.1.4 Main window elements 69
- 4.1.9 Help 72
- 4.2.1 Fonts 73
- 4.2.2 Security system 73
- 4.2.3 Global settings 74
- 4.2.4 COM port 76
- 4.3 Systems 77
- 4.3.3 System functions 78
- 4.3.4 PC icon 80
- 4.3.5 Watch window 80
- 4.3.6 Instrument icon 81
- 4.3.7 System state window 87
- 4.3 Systems 88
- Error messages 88
- 4.4 Methods 89
- Data Log 95
- <Add new> 95
- New comment 95
- 4.4.3 Method setup 96
- 4.4.4 Integration 99
- 792 Basic IC 100
- 792 Basic IC 101
- Component table 103
- Components table 105
- 4.4.6 Report output 115
- 4.5 Chromatograms 127
- 4.5.4 Peak editor 136
- 4.5.5 Printing 138
- 4.6 Batch reprocessing 141
- REPROCESS / 145
- <Merge> 145
- Appearance 145
- File / Save / Chroma 145
- 5.1.1 Separating columns 148
- 5.1.2 High-pressure pump 149
- 5.1.3 Eluents 150
- 5.1.4 Peristaltic pump 150
- 5.1.5 Suppressor module 151
- 5.1.6 Connections 151
- 5.2.1 General information 152
- 5.2.2 Passivation 152
- 5.2.3 Recycling 153
- 5.2.4 Shutdown 153
- 90 and 158
- 5.3 Faults and malfunctions 165
- 6 Appendix 168
- 6.1.3 Injection valve 169
- 6.1.4 High-pressure pump 169
- 6.1.5 Peristaltic pump 170
- 6.1.6 Suppressor module 170
- 6.1.7 RS232 interface 170
- 6.1.8 Mains connection 171
- 6.1.9 Safety specifications 171
- 6.1.11 Ambient temperature 172
- 6.1.12 Housing 172
- 6.2 Standard equipment 173
- 6.3 Optional accessories 176
- 6.3 Optional accessories 178
- 6 Appendix 179
- 6.4 Warranty and conformity 185
- EU Declaration of Conformity 186
- 6.5 Index 188
- 6.5 Index 190
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