YSI ProODO - Manual (Page 17)

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Laboratory barometer readings are usually “true”
(uncorrected) values of air pressure and can be used “as is”
for barometer calibration. Weather service readings are
usually not “true”, i.e., they are corrected to sea level, and
therefore cannot be used until they are “uncorrected”. An
approximate formula for this “uncorrection” is below:
True BP = [Corrected BP] – [2.5 * (Local Altitude in ft. above sea level/100)]
T E M P E R A T U R E
All probe/cable assemblies have built-in temperature. Temperature calibration
is not required nor is it available. To set the units, press Probe
, and select
Display. Highlight Temperature and press enter. Highlight the desired
temperature units of °F, °C, or K and press enter to confirm the selection. Only
one temperature unit may be displayed at a time. You may also choose to not
display temperature. If you choose not to display temperature, dissolved oxygen
readings will still be temperature compensated.
T A K I N G M E A S U R E M E N T S
To take readings, insert the probe into the sample. Move the probe in the 1.
sample to release any air bubbles and to provide a fresh sample to the sensor
cap. This movement is only necessary when first inserting the probe into
the sample. Since the ProODO utilizes optical luminescent technology,
continuous sample movement or stirring is not required. The probe will
fit into a 300 mL BOD bottle for taking initial and final BOD readings. For
best results in a BOD bottle, a stirring device should be used to properly mix
the sample and to keep solids from settling at the bottom.
Allow the temperature readings to stabilize and wait approximately 25-35 2.
seconds for the DO readings to stabilize.
Log One Sample is already highlighted in Run mode. Press Enter to open 3.
a submenu. Highlight Sites or Folders and press Enter to select the site or
folder to log the sample to.
If necessary, use the keypad to create a new Site or Folder name. If Site List 4.
and Folder List are disabled in the System menu, you will not see these
options when logging a sample.
i
Once the Site and/or Folder name is selected, highlight 5. Log Now and press
Enter. The instrument will confirm that the data point was successfully
logged.
If you would like to log at a specific interval vs. logging one sample at a time
or vice versa, press System
, then highlight Logging and press Enter. Select
Continuous Mode and adjust the time Interval if necessary. On the Run screen,
the option to log will change from Log One Sample to Start Logging based on the
time interval entered in the Logging Menu. Note – When utilizing the Manual
sampling mode, the Continuous Logging Interval must be set to 10 seconds or
greater.
During a continuous log, the Start Logging dialog box on the Run screen will
change to Stop Logging. Press Enter to stop continuous logging.
Note - There is NO WARM-UP period associated with the ProODO sensor so
you may wish to turn off the ProODO instrument between readings to conserve
battery power.
F I L E S A N D S I T E L I S T S
fIle MeMory
To view the file memory, press File .
The Data Memory shows a percentage
indicating the amount of memory available.
If the file memory is near 0%, files should be
downloaded to a PC and/or deleted to free up
memory.
VIeW data
Press File , highlight View Data, press enter.
Configuring your data view:
Site: will allow you to view data from one
particular site or all sites. Highlight Site, press
enter, and select the site you wish to view data
from or select All Sites to view data from all
sites.