Hach-Lange DR 2800 eco - Manual (Page 96)

94
Advanced Operations
A
1
refers to the absorbance at wavelength 1
A
2
refers to the absorbance at wavelength 2, etc.
K
1
refers to the coefficient at wavelength 1
K
2
refers to the coefficient at wavelength 2, etc.
Coefficients can be set negative where subtraction is required.
3. To change a wavelength, press one of the ”
λx:“ keys. Enter the
desired wavelength coefficient into the numeric keypad.
Confirm with OK.
4. To change a coefficient, press one of the ”K
X
:“ keys. Enter the
desired coefficient into the numeric keypad.
Confirm with OK.
Note: The instrument allows entry of up to 5 significant digits, with a
maximum of 4 significant digits after the decimal point.
Concentration Factor:
1. Press Concentration Factor: Off in the ”Options“ menu. Press
On to activate this feature.
2. Press the ”Factor“ key to enter the factor by which
absorbance readings are to be multiplied. Press the ”Unit“ key
to select the units for concentration measurements or to create
a new unit.
3. Confirm with OK.
Concentration Resolution:
1. Press Concentration Resolution in the ”Options“ menu.
2. Make your selection and confirm with OK.