Buchi DuMaster D-480, Руководство по эксплуатации

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Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
7 - Using the instrument 143
Ways of determining the daily factor
There are three ways to determine the daily factor:

You can compute the daily factor manually. This makes sense if you do not want to define the
substance as a factor sample.

You can selectively trigger determination of the daily factor:

You can then choose the time for determining the daily factor yourself.

You can choose the standard samples with which the daily factor is determined yourself.
Condition: The daily factor samples must have a name defined in
Options > Settings >
Standards
and the standard substance must be enabled as a factor sample.

Daily factor determination can be set to fully automatic.

If you measure substances defined as factor samples, they are recognized and the daily
factor is automatically computed from them.

Because the daily factor is determined several times a day, it will also offset any
fluctuations in the course of the day. Condition: The daily factor samples must have a name
defined in
Options > Settings > Standards
and the standard substance must be enabled
as a factor sample.
Computing the daily factor by hand
Proceed as follows:

Measure any substance, that need not be defined in
Options > Settings > Standard samples
.

Compute the daily factor. Daily factor = (theoretical content / actual content).

Allocate the daily factor to the real samples in the sample view (text view). Enter the daily factor
in the corresponding factor column.
How to selectively trigger the daily factor
Proceed as follows:

Define the type of factor calculation. For that purpose, open the "Configure Calculations" dialog in
the operating software by selecting
Options > Settings > Calculation
.

Define the mode of factor determination:
If you in section "Factor determination"...

... select "sequentially" then the daily factor is computed group-by-group and changes
throughout the day.

... select "entirely" the daily factor is computed on the basis of all factor samples in the file.
An average factor is computed.

Then click
OK
to save your settings.

Measure a standard substance, that must be defined in
Options > Settings > Standard
Samples
, as a factor sample.

If you only want to determine the daily factor from a certain number of samples, select these
samples in the sample view (text view).

Open the "Daily factors" dialog in the operating software by selecting
Math. > Factor
.

If you selected a certain number of samples for the calculation, check "Use standard samples
only".

Click
Yes
to continue. The daily factor is computed automatically and allocated to the subsequent
samples.