Hach Portable Spectrophotometer DR 2800 - Manual (Page 71)

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Advanced Operations
Timer 1 / Timer 2 / Timer 3 / Timer 4:
This function can define time intervals for up to four timers. Timer
designations such as Shake, Wait and Swirl can be assigned.
1. Highlight the appropriate line in the overview of the program
data and press Edit.
2. The timers are activated or deactivated with the check boxes in
the left part of the display. In the next column, a selection can
be made from a list of names that designate the corresponding
work step. In the third column, the times for each timer are
entered (in mm:ss).
Chemical form 2 / chemical form 3 / chemical form 4:
If a Chemical Form 1 has been defined, up to three additional
alternative forms can be entered here.
1. Highlight the appropriate line in the overview of the program
data and press Edit.
2. The chemical forms are activated or deactivated with the check
boxes in the left part of the display.
3. Press the left key to enter another chemical form with the
alphanumeric keypad and press OK to confirm. Press the right
key to enter the conversion factor to calculate the concentration
of the additional chemical form from the concentration of
Chemical Form 1 and press OK to confirm.
4. Press Store to save the program data. Press Cancel to return
to the Main Menu.