YSI Pro2030 - Manual (Page 9)

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Example:
Instrument #1 with Do Local% enabled:
At 737 mmHg barometric pressure, roughly 841 ft above sea level, the instrument
would calibrate to 100%.
When taking measurements at the same location (737 mmHg) in a 20°C fresh
water sample that is completely air-saturated, the instrument would read:
Do %L value = 100%
Do mg/L value = 8.81 mg/L (9.09 1 x .9697 2 )
Instrument #2 Do Local% disabled:
At 737 mmHg barometric pressure, roughly 841 ft above sea level, the instrument
would calibrate to 737/760 x 100% = 96.97%
When taking measurements at the same location (737 mmHg) in a 20°C fresh
water sample that is completely air-saturated, the instrument would read:
Do% value = 96.97%
Do mg/L value = 8.81 mg/L (9.09 1 x .9697 2 )
Hence, the mg/L readings are unaffected by Do Local%.
1.) Value from oxygen solubility table (Appendix B).
2.) 737/760 x 100%, correction for barometric pressure.
last dIgIt suPPressIon (lds)
Last Digit Suppression (LDS) can be enabled or disabled by using the up or
down arrow keys to highlight it and pressing enter . An ‘X’ in the box next to
LDS indicates it is enabled.
LDS rounds the Do value to the nearest tenth; i.e. 8.25 mg/L becomes 8.3 mg/L.
LDS is automatically disabled during calibrations.
QuIcK do calIBratIon (QuIcK do cal)
Quick Do Cal can be enabled or disabled by using the up or down arrow keys to
highlight Quick Do Cal and pressing enter. An ‘X’ in the box next to Quick Do
Cal indicates it is enabled.
When Quick Do Cal is enabled, press and hold the calibration key for 3
seconds while in the Run screen. Next, highlight Dissolved oxygen and press
enter to calibrate the Do sensor to the instrument’s barometer reading. For
more information on Quick Do Cal, see the Calibration section of this manual.
audIo
Audio can be enabled or disabled by using the up or down arrow keys to highlight
Audio and pressing enter. When enabled, there will be an ‘X’ in the box next to
Audio.
When Audio is enabled, the Pro2030 will beep twice to indicate stability when
Auto Stable is enabled. The instrument will also beep when a key is pressed.
When Audio is disabled, the Pro2030 will not beep.
contrast
To adjust the display Contrast, use the up or down arrow keys to highlight
Contrast, then press enter. Next, use the up or down arrow keys to adjust the
contrast. The up arrow key will darken the contrast and the down arrow key will
lighten the contrast. After adjusting the contrast, press enter to save and exit the
Contrast adjustment option.
EMERGENCY CoNTRAST ADjUSTMENT
If necessary, there is an alternate method of adjusting the contrast. To adjust the
contrast, press and hold the menu key, then press the up arrow key to darken the
contrast or press the down arrow key to lighten the contrast.
sensor tyPe
Sensor Type sets the type of dissolved oxygen sensor being used; either
Polarographic (black) or Galvanic (grey).
Use the up or down arrow keys to highlight Sensor Type, then press enter to
open a submenu. Highlight the sensor type corresponding to the sensor installed
on the cable and press enter to confirm. The enabled sensor type will have an ‘X’
in the box next to it. Next, use the down arrow key to highlight the ESC – Exit,
then press enter to save changes and to close the sensor submenu.
The instrument’s Sensor Type must be configured for the sensor installed.
Failure to do this may result in damage not covered under warranty.
If you observe readings very close to 0 or extremely high readings, i.e.
600%, the Sensor Type setting may be incorrect.
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