Table of Contents
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Section 3
3.1 Selecting a Hach Program
3.2 Running a Hach Program
3.3 Using Program Timers
3.4 Taking a Reading
5940018HachPrograms.fm
Hach Programs—Simplified Analysis
The DR/2400 Portable Spectrophotometer contains more than 120 programmed
procedures accessible through the Hach Programs menu.
•
To see an alphabetical list of Hach programs with program
numbers, touch
•
To select a specific program number, touch
Enter the program number (listed in the procedures manual)
and touch
•
To move quickly through the list, use the scroll bar to move up
or down. When the selection is highlighted, touch
After a program is selected, the screen for that parameter will appear.
Wavelength selection is automatic.
Follow the chemical procedures described in the DR/2400 Procedures Manual.
Some Hach procedures do not require the use of timers. Other Hach procedures
require several timers.
Touch the timer icon when prompted by the Procedures Manual.
Choose the appropriate timer from the Timers screen and touch
. The timer will count down on the screen. If necessary, cancel
Start
the timer midway through the countdown by touching Cancel.
By default, the timer displays large numbers as it counts down. Touch
view the Hach Program screen while the timer is running.
A general purpose timer is also available in many programs. Touch the timer
icon and select
General Timer
After preparing the samples according to the Procedures Manual, place the
sample cell into the instrument. Touch
•
If the instrument is set so that Display Lock is off, the instrument will take
readings continuously after the instrument is set to zero.
•
If Display Lock is on, touch
in the Main Menu.
Hach Programs
.
OK
, then enter the length of the timed interval.
.
Read
to obtain a sample reading.
Read
Hach Programs—Simplified Analysis
.
Select by Number
.
Start
to
Close
Page 33
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