Advanced Operations

2.To enter the standard concentrations and corresponding absorbance values in the displayed table, press the "+" symbol. Use the alphanumeric keypad to enter the values.

Press OK and enter the corresponding absorbance value. Press OK.

The entered data are displayed in the table. Repeat the sequence for each data point to enter it.

3.To change a value in the table, highlight the appropriate line, press the unit key (e.g. mg/L) or Abs and enter the changed value via the alphanumeric keypad.

4.When the data have all been entered, press Graph.

Note: The correlation coefficient (r2) is shown on the left below the axes.

5.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.

6.Press Force 0 to change the setting from Off to On. The curve now passes through the origin of the coordinate system.

Note: This may have an adverse effect on the correlation coefficient (r2).

7.Press Table to display the table again.

8.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 70.

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Hach DR 5000 user manual Advanced Operations