Buchi DuMaster D-480, Руководство по эксплуатации

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Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
7 - Using the instrument 144
How to set automatic daily factor determination
Proceed as follows:

Define the type and degree of automation for 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.

Specify the degree of automation for factor determination. Check "Automatic factor
determination". factor calculation.

Then click
OK
to save your settings. As soon as you measure a substance defined as a factor
sample, the daily factors are automatically computed afterwards.
Recommendation for automated daily factor determination
When automatically computing the daily factor, it is useful to enable the "Standard tolerance
monitoring" function. This checks standard samples for fluctuations of results. If the tolerance define
in
Options > Settings > Standards
is exceeded, continuous analysis is stopped.
Enabling "Standard tolerance monitoring"
Proceed as follows:

Open the "Error handling" dialog in the operating software by selecting
Options > Settings >
Error handling
.

Check "Standard tolerance monitoring".

Click
OK
. "Standard tolerance monitoring" is now enabled.
Stopping continuous analysis
When do I stop continuous analysis?
It makes sense to stop a continuous analysis in the following cases:

If the result of the blank value indicates that the instrument is leaky.

If the results of the conditioning sample indicate that parts of the instrument are defective or that
gas pressure and flow behaviors are not OK.

If results of the daily factor deviate substantially from the last results.
Stopping a continuous analysis spontaneously
Proceed as follows:

Execute the command
System > Single run
in the operating software.

This stops the analysis after measuring the current sample.
Moving a stop marker
The program automatically moves the stop marker to the last sample position during sample data
input. It is therefore only necessary to move the stop marker in special cases.
Nevertheless, if for any reason you have to move the stop marker proceed as follows:

Open the "Set stop marker" dialog by selecting
Edit > Stop tag
.