YSI Pro20 - Manual (Page 14)

After selecting a language, sensor, and membrane, the run screen will appear. The
next time the instrument is powered up the run screen will appear immediately
after the self check. If the sensor type or membrane type is changed, ensure that it
updated in the System Setup menu.
S Y S T E M S E T U P M E N U
Press the menu key to access the following System Setup functions.
The System Setup menu contains multiple screens which are notated as ‘pages’.
The current page is indicated on the display, figure 9.
DO LOCAL%
DO Local% can be enabled or disabled by using the up or down arrow keys to
highlight it and then pressing enter. An ‘X’ in the box next to DO Local%
indicates it is enabled (Figure 9).
7 DO Local%
LDS
One Touch Cal
Audio
Contrast
Sensor Type
Membrane Type
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ESC
4
Reset Exit
Figure 9, DO %Local is enabled.
When DO Local% is enabled, DO% values will be expressed as %L on the run
screen.
DO Local% allows for localized dissolved oxygen measurements. This sets the
DO% calibration value to 100% regardless of the altitude or barometric pressure.
When DO Local% is enabled, the Pro20 will factor in the barometric pressure on
each measurement. For example, if the barometric pressure changes, the DO %L
reading would remain constant in air-saturated water or in water-saturated air.
Local DO is ideal for EU compliance.
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