YSI 9300 Photometer - Manual (Page 5)

SYSTEM MODE
When the instrument is first used, the SYSTEM mode should be used to set
the preferred operating options:
• Use the and keys to scroll through the features.
• Use the and keys to select the options.
• Press [OK] to accept the selections and return to PHOTOMETER mode.
Back Light
The graphic display features a backlight to enhance the display contrast. This
may be switched off to conserve battery power.
Language Options
The photometer can be operated in a number of different languages. When a
particular language is selected, the test names and operating commands will
appear in that language. Certain tests and unit options are provided in
accordance with the conventions of particular countries and are only available
when the photometer is switched to the language concerned. Select the
language required from English, French, German, Spanish or Italian.
Units
The photometer offers the choice of result expressed in mg/l, ppm, mmol/l,
µmol and g/l.
Battery Level
A battery level indicates the remaining battery life. At least 3.0V is required for
successful operation of the instrument.
TAKING PHOTOMETER READINGS
The photometer is very simple to use. Intuitive screen prompts guide the user
towards the test result.
Program Numbers and Test Instructions
Each test is identified by a separate program number or named key. Program
numbers are shown in test instruction sheets supplied with the instrument or
reagent systems. For some tests, a choice of different programs is offered in
order to give the option of the result in different forms (eg for Nitrate - NO
3
or
Nitrate Nitrogen - NO
3
-N).
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