Hach-Lange DR 2800 eco - Manual (Page 95)

93
Advanced Operations
λ / Absorbance Formula:
1. Press Absorbance Formula.
2. The formula selected in the top key determines the number of
wavelength and coefficent keys that will appear below. To
change the absorbance formula, press the top key, select a
formula from the opening list, and press OK. When a new
formula is selected, the number of variables below changes to
match.
The following formulas are available:
K
1
A
1
+ K
2
A
2
K
1
A
1
+ K
2
A
2
+ K
3
A
3
K
1
A
1
+ K
2
A
2
+ K
3
A
3
+ K
4
A
4
K
1
A
1
/ K
2
A
2
(K
1
A
1
+ K
2
A
2
) / K
3
A
3
(K
1
A
1
+ K
2
A
2
) / (K
3
A
3
+ K
4
A
4
)
Timer icon
This functions as a stopwatch. It helps to ensure that the steps of an analysis are correctly timed
(e.g. reaction times, wait times, etc., can be exactly specified). When the specified time has
elapsed, an acoustic signal is emitted. The use of the timer has no influence on the measurement
program.
Concentration Factor Multiplication factor for converting absorbance values into concentration values.
Concentration
Resolution
To select the position of the decimal point in the calculated concentration readings.
Absorbance Formula Calculation basis for evaluating samples
Save as User Program
To store the selected parameters as a User Program, see 6.1 User Programs (DR 2800 only) on
page 65
Recall Data
Call up saved measurement data or time courses, see 5.3 Storing, Recalling, Sending and
Deleting Data on page 38 .
Instrument Setup Basic data of the instrument, see 5.2 Instrument Setup Mode on page 29 .
Table 13 ”Multi Wavelength“ options (continued)
Figure 15 Options
Options Description