Hach DR 2800, User Manual, Page: 54 / 96

54
Advanced Operations
Calibration by Entering the Formula
1. Select Enter Formula and press
NEXT
.
2. Press the formula key (key that contains an equation).
A list of available formulas (linear and 2nd and 3rd order
polynomial) is displayed. Up to 4 coefficients can be entered,
depending on the selected formula. Press the required formula.
3. Depending on the selected formula, the required coefficients (a,
b, c...) are displayed. Press the coefficient keys and enter the
corresponding values via the alphanumeric keypad. After each
entry, press
OK
to confirm.
Note: The coefficients can have up to 5 digits and can have a positive
or a negative sign.
6.1.1.4 Storing a User Program
The input of the basic method data is now complete. An overview of
the variable program data is displayed.
1. To enter more specifications or change existing information,
highlight the appropriate line and press
EDIT
.
2. Select
STORE
to save the user program.
6.1.1.5 Additional User-defined Parameters and Functions
In addition to the previously defined basic data, additional
parameters and functions can be defined for user programs:
• measuring range upper and lower limits
• timer functions
• chemical forms