Hach Portable Spectrophotometer DR 2800 - Manual (Page 78)

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Advanced Operations
Select Conc. key
If an already defined formula, in this case C1, is to be taken into
account in the formula for C2, press Select conc.
Enter the number of the formula (e.g. 1 for C1) and press OK to
confirm.
Cn can now be linked with a mathematical operation.
Note: The Cn concentrations that are to be calculated are numbered in
sequence: C1, C2, C3, etc.
Note: When the first Cn formula has been defined, the Formula list is
automatically extended by Cn+1.
6.1.2.4 Enter variables
1. Highlight the Variables line in the data overview and press
Edit.
2. Select the variable to be edited, press Edit and use the
alphanumeric keypad to enter the data specified in the working
procedure (for F1, F2,
λ1, U1 etc.). Press OK to confirm each
entry.
Abbreviation of Variables:
F1: Factor 1
F2: Factor 2
λ1: Wavelength 1
U1: Conversion Factor 1 for the first chemical form
U2: Conversion Factor 2 for the further chemical form etc.
6.1.2.5 Save a free programming user program
1. Press Store to save the entered data. The data can be stored
under any data point (Measurement sequence, Formula, Timer,
etc.).
2. Press the PC & Printer icon to send the program data to a
printer or to a USB memory stick (connect the USB memory
stick to the USB interface first).
Note: The test data will be formatted in the preinstalled PrgData folder
as a .csv and as a .lst file.
3. To transfer the program data from one instrument to another
create a new folder on the USB memory stick named dbhlc
and copy the .lst files into this folder (see
section 6.7.2 on
page 98 ).