Hach DR/2010 - Page 73

73
31. Insert the second standard in the cell holder and close the cover. Press
the
READ key and the display changes to:
then:
If the absorbance value of the standard is known, enter this value
using the numeric key pad. The value will be displayed on the left
side of the display. Press
ENTER to accept the absorbance value. Press
ENTER again to accept the data pair.
32. Repeat the sequence in Steps 30-31 for each standard.
33. After the last standard is entered, press
EXIT to return to the User
Program setup menu.
Calib Table: X will be flashing (X= number of
data points in the calibration table). Press the
DOWN ARROW key.
34. The display will show:
To change this option to On, press
ENTER.UsetheARROW keys to
toggle between Off and On. Press
ENTER when the correct setting
is displayed.
When on, this selection forces the calibration curve through the 0, 0
point on the calibration curve graph. If Force Zero is not used, and the
intercept (“a” coefficient) is significantly different from zero, pressing
ZERO will not make the display read 0.00. Zeroing sets the Abs to 0;
the displayed concentration depends on the curve itself (i.e., C = -2 +
(500 x Abs); zeroing gives -2 as a display).
nm
+8.8.:8.8. ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
888500
*0.000 Readinç
nm
+8.8.:8.8. ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
888450
*0.300 Abs 0.075 mç/L
nm
+8.8.:8.8. ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
888450
* Force Zero: Off