Hach DR 2800, Руководство пользователя, Страница: 53 / 96

53
Advanced Operations
Calibration by Reading Standards
1. Select Read Standards and press
NEXT
.
2. To enter the standard concentrations in the displayed table,
press the "
+ " symbol. Use the alphanumeric keypad to enter
the standard concentration. Press
OK
.
3. Press the "
+
" symbol again and enter the next standard
concentration. Repeat this sequence until all standard
concentrations (maximum of 24 solutions) have been entered.
4. Highlight the appropriate concentration line for the first
standard and insert the cell with the corresponding
standard solution.
5. Highlight the zero concentration line. Place the zero solution in
the cell compartment. Close the compartment. Press
ZERO
.
6. Highlight the appropriate concentration line for the first
standard and insert the cell with the corresponding standard
solution. Press
READ
.
7. Highlight the second standard line. Place the second standard
solution in the cell compartment. Press
READ
. Repeat this
sequence until all the standard solutions have been measured
(maximum of 24 solutions).
The entered and measured data are displayed in the table.
Note: To delete a standard concentration, select the appropriate line and
press the Delete icon.
8. When the data have all been entered and the measurements
have all been performed, press
GRAPH
to display the curve that
results from plotting the entered data.
9. The linear equation corresponds to the standard setting. Press
NEXT CURVE
to display the polynomial 2nd order curve. Press
NEXT CURVE
again, to display the polynomial 3rd order curve.
10. Press
FORCE 0
to change the setting from Off to On. The curve
then passes through the origin of the coordinate system.
11. Press
TABLE
to display the table again.
12. When the table has been completed and the curve type has
been chosen, press
DONE
when the graph is displayed or
EXIT
when the table is displayed. Go to section 6.1.1.4 on page 54 .