Stored Programs - Hach LT 200 Manual Del Usuario

C A U T I O N
Burn Hazard. Sample cells are hot. Wear thermal insulating material
(e.g., gloves or finger cots). Do not remove a sample cell that is
greater than 80 °C. Do not put a sample cell that is greater than 80 °C
in a colorimeter.
C A U T I O N
Chemical Hazard. If a sample cell breaks, do not let the liquid touch
skin. Use a fume hood as necessary to remove chemical fumes.
C A U T I O N
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.
N O T I C E
To prevent sample cell and instrument damage, keep the openings in the heating
block dry. Dry the outside of sample cells fully.
N O T I C E
To prevent instrument damage, immediately disconnect power if an accidental
spill occurs or a sample cell breaks, then clean the instrument. Refer to
instrument on page 11.
N O T I C E
Do not cover the ventilation slits in the protective cover. The instrument and
sample cells may become too hot and decrease the accuracy of measurement.
1. Prepare the test sample cells as specified in the analysis procedure.
2. Close the sample cells with the cap.
3. Dry the outside of the sample cells fully.
4. Turn the instrument on and open the protective cover. The last
temperature program(s) selected is shown on the display.
5. If using 16 mm tubes with a heating block with 20 mm openings, put
reducing adapters in the openings.
6. LT 200: Put the test sample cells in the correct heating block and
close the protective cover.
7. Select the correct temperature program (and digestion period if
applicable) using the keys, then push Start. Refer to
programs on page 9. The temperature program is selected
independently for each heating block when there are two heating
blocks.
Note: To stop a program, push the key below the program two times.
LT 200: The digestion program starts. The temperature of the
heating block increases to the selected temperature, then the time
automatically counts down to zero (0). When the digestion program
is completed, three beeps are heard and the heater turns off.
DRB 200: The temperature of the heating block increases to the
selected temperature.
8. DRB 200: When the heating block is at the selected temperature
(two beeps are heard), put the test sample cells in the correct
heating block and close the protective cover. Push Start to start the
digestion program.
When the digestion program is completed, three beeps are heard
and the heater turns off.

Stored programs

Clean the
Table 3 provides descriptions of the stored temperature programs for the
LT 200. Table 4 provides descriptions of the stored temperature
programs for the DRB 200.
Stored
English 9