Hach-Lange DR 2800 eco - Manual (Page 77)

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Advanced Operations
6.1.3 "Free programming" program type
An overview of the specifications of the programmed test is
displayed. The input options are explained in the following.
Activate the line containing the program point that is to be edited or
defined and press Edit.
6.1.3.1 Measurement Process
The measurement process defines exactly the handling and the
measurements of the test:
• At which and how many wavelengths should measurements be
carried out
• How many absorbance measurements must be carried out?
• When should the zero measurement and the sample
measurement be carried out?
• Are waiting times necessary between measurements?
• Should individual program sequences be repeated?
The elements of a measuring sequence, such as zero and sample
measurements, and the timer or timers (reaction times, waiting
times, etc.) are individually defined.
Table 11 Definitions of the program points
Program point Description
Name e.g. name of the analysis parameter
Version an abbreviation assigned by the user, or the version number, etc. is entered here
Measurement Process
exact definition of the test: the number of wavelengths at which measurements are carried out,
the number of absorbance measurements needed, the keys to be used, any waiting periods
between measurements, etc.
Formula definition of the evaluation formulas with which the test result is calculated
Variables
the number of variables shown in the display depends on the definition of the measurement
process and the formulas. Input of the numerical values of the wavelengths, factors, constants,
etc.
Timer 1, Timer 2,
Timer 3, Timer 4
this function can be used to enter abbreviations and defined times for up to four timers. Activate
the appropriate line and press Edit.
The timers are activated or deactivated with the control boxes on the left of the display. In the
next column, a selection can be made from a list of names that describe the corresponding work
step. In the third column, the times for each active timer are entered.