2 processing a sample series, Statistics for multiple determinations – Metrohm 840 PC Control 5.0 / Touch Control User Manual

Page 165

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3

Operation

PC Control / Touch Control

153

3.20.2 Processing a sample series

You can use the following functions when processing sample series:

Statistics for multiple determinations:

Activate the Statistics checkbox in the method under

Options Method and enter the Number of samples whose results

are to be used for the statistical calculations. You can carry out the

determinations individually or use the sample data silo for entering

the sample data (see below).

Note!

Only results that have been produced with the same method can be

used in the statistics.

Sample data silo: in the sample data silo you can enter the sample

data for a whole sample series and process the series in succession.

Activate the use of the sample data silo under Control (see

Section 3.17.2).

Enter the sample data in the sample data silo. You can also edit

the sample data silo "live", i.e. while a determination is being carried

out. You can define the method used to process each sample in

the sample data silo. This is not necessary if all samples are to be

processed by the same method. In this case the current method will

be used.

There are various ways of starting the determination of a sample series.
• You can start the sequence for each individual determination with

the [START] fixed key.

• You can use the autostart function, which can be activated under

Control (see Section 3.17.3). In this case the next determination will

be started automatically after the end of the previous one.

If a method is entered in the sample data silo then this method will first

be loaded and then the determination sequence will be started.
When a determination has been started a check is first made that all

devices which are necessary are connected and ready for use and

whether all the titrants are present. All the monitoring intervals for the

titrants, sensors and common variables are also checked. Then all the

method commands are processed in succession. The dialog changes

automatically to the live display (see Section 3.20.4). While a

determination is being carried out this is indicated by a moving

symbol in the status line. When all the method commands have been

processed the determination is concluded and the program switches

automatically to the Results dialog (see Section 3.18). Only if you alter

the live parameters, edit the sample data silo (Touch Control only) or if

the manual control window is open (Touch Control only) will there be no

automatic switch to the results display at the end of the determination.

You can see when the determination is finished from the status display

at the top right corner. The sample data from the processed sample

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