Advanced Operation; User Programs - Hach DR 900 Manuel D'utilisation

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5. Insert the blank sample cell into the cell compartment. Make sure to
install the blank sample cell in the correct and in a consistent
orientation so that the results are more repeatable and precise. Refer
to
Figure 4
on page 7.
6. Close the instrument cap to prevent light interferences. Refer to
Figure 5
on page 8.
7. Push Zero. The display shows a concentration of zero (e.g., mg/L,
ABS, µg/L).
8. Prepare the sample. Add reagents as specified by the method
document.
9. Select Options>Start Timer to use the stored timers within the
program.
10. Close the sample cell and clean the optical surfaces of the cell with a
lint-free cloth
11. Insert the sample into the cell compartment. Make sure to install the
sample cell in the correct and in a consistent orientation so that the
results are more repeatable and precise. Refer to
on page 7.
12. Close the instrument cap to prevent light interferences. Refer to
Figure 5
on page 8.
13. Push Read. The display shows the results in the selected units.
Note: The display shows "+++" or "---" if the measured absorbance is less or
more than the calibration range of the test.
Data log
The data log shows all saved readings. Push HOME>Options>Data
Log to see the readings. Refer to
information about the data log export.
12 English
Figure 4
Export the data log
on page 15 for

Advanced operation

Select a favorite or a user program
The favorite and user programs database is empty when the instrument
is started for the first time. A method can be saved in the favorites for
faster access. A user program can be programmed for specific needs.
1. Push HOME>Options>Favorites/User Programs>Select.
2. Push New Program to make a new user program. Refer to
programs
on page 12.
Add a program to favorites
Stored programs and user programs methods which are often used can
be saved in the favorites list.
1. Select HOME>Options>All Programs.
2. Select the applicable method and push Start.
3. Select Options>Add to Favorites to add the selected method to
favorites.

User programs

The user programs database is empty when the instrument is started for
the first time. Use New Program to make new programs for specific
needs. To make a new user program, do the steps that follow.
1. Push HOME>Options>Favorites/User Programs>Select>New
Program.
2. Select an available program number from 1001 to 1010.
Note: A maximum of ten programs (user programs and/or favorites) can be
saved.
3. Enter a method name (up to 12 characters).
4. Select the wavelength: 420, 520, 560 or 610 nm.
5. Select the unit: None, µg/L, mg/L or g/L.
User

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