Buchi DuMaster D-480, Руководство по эксплуатации

Страница: 137 / 354

Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
7 - Using the instrument 137

If necessary, prepare samples for determining the blank value.See Types of blank value
determination and their settings.

Prepare conditioning samples for conditioning. Settings can be found in Performing routine
measuring work.

Prepare the samples for determining the daily factor. Settings can be found in Performing
routine measuring work.

Prepare the real samples. Cf.
Sample preparation instructions
(on page 124).

Insert the samples on the carousel.

Enter the weight in [mg] in the sample view (text view) on the PC if it has not already been
transmitted online by the balance.

Enter the sample name (max. 32 characters) in the sample view (text view):

Blank values must have the keyword defined via
Options > Settings > Keywords
(factory
set to "Blnk").

Daily factor or calibration samples must have the name defined in
Options > Settings >
Standards
.

Set method in the sample view (text view):

For blank samples, cf. Types of blank value determination and their settings.

For conditioning samples, cf. Performing routine measurement work.

For daily factor samples, cf. Performing routine measurement work.

For real samples, cd. Values for oxygen dosing.

Go through the measuring start checklist. Cf. Checklist for blank value / conditioning and daily
factor measurements.

Start the analysis process in the operating software:

Select
System > Auto run
to start a multiple-sample analysis.

Select
System > Single run
to start a single-sample analysis.

Once measurement is finished, evaluate the measurement.

Save the data or print them out. See
Data backup and printing
(on page 156).
When can routine measuring work be omitted?
You can measure real samples without preceding routine measuring work:

if you have already performed routine measuring work today

if measuring breaks last less than 2 hours.
Measuring real samples without preceding routine measuring work
Please observe the following instruction:
Caution
Inserting multiple samples into the ball valve (only for
solid operation)
If there are samples in the carousel while you are changing the position of the
carousel via
System > Sample Position
, multiple samples may fall into the ball
valve at the same time. In this case, a service technician is required.
Before changing the position of the carousel, always remove all samples from the
carousel.
Proceed as follows:

Move the empty carousel to zero position. To do so, open the "Set carousel position" dialog in
the operating software by selecting
System > Sample Position
.