04E3920 User Manual QuickTOC
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purity
ATEX 2 93
7 How to Work With the Analyser
7.2 Configuration
LAR | PROCESS ANALYSERS AG
7.2.2.9 Filling time of the injection loop
Here you can specify the duration in which the device fills the injection loop with sample.
7.2.2.10 Waiting time of the injection loop
Here you can specify how long the filled injection loop will wait for the sample to be injected into the oven.
The waiting time is at least 5 seconds.
7.2.2.11 injection time
This option can be used to specify how many individual measurements are to be made per output
measured value. The permissible values are between 1 and 10. The default value of this option is 1. Se-
veral individual measurements are averaged over a measured value.
7.2.2.12 Outliers in a measurement
Using the outlier correction, incorrect measurements can be taken out of the averaging of the individual
values. Permissible values are 0 to 2 measured values. For the determination of the outlier, the mea-
sured value with the largest standard deviation is chosen as the mean value. If the standard deviation is
within the tolerance range of the maximum CV, the measured value of the individual measurements is
used for averaging. If this is above the maximum CV, the measured value is treated as an outlier and is
ignored when calculating the mean value and the coefficient of variation (CV).
7.2.2.13 Maximum CV for a measurement
The maximum CV or coefficient of variation describes the repeatability or reproducibility of several con-
secutive individual readings taken on the same sample. The maximum CV or coefficient of variation is
only effective in combination with the outlier correction. If the outlier correction is activated by entering
the numbers 1 or 2, then the maximum CV is taken into account when determining the outlier. The de-
fault value is 0, i. there is no consideration. The maximum adjustable value is 10%.
7.2.2.14 Averaging values
Here, the calculation of the average values can be activated. Upon activation, the number (1-5) of values
from which the average is formed may be indicated
Notice
If a user with Level 3 permission on the Measure Parameters screen in User Level 2
modifies the Percentage on Multiple Determination parameter (> 0), users with Level
2 permission can only see this parameter in gray. Further parameters "Repetition dur-
ing a measurement", "Outliers during a measurement" and "Maximum CV during a
measurement" are then only visible in gray and can not be changed (Chapter 13.2.1
from page 172).
i
Standard deviation
Medium value
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