YSI ProDSS User manual

This Quick Start Guide is a quick reference in operating the ProDSS. It is not intended to replace the
information found in the User Manual. For your convenience, this Quick Start Guide will enable you to
unpack your instrument and get to the field quickly. An electronic version of the User Manual is located
on the USB flash drive included with the instrument. Please refer to the ProDSS Battery Pack Quick Start
Guide, also located on the USB flash drive, for battery safety warnings and precautions.
Powering on the ProDSS
The ProDSS comes with a lithium-ion battery pre-installed. The battery ships at less than 50% full
capacity and there is no need to charge the instrument before first use. To power on the instrument,
simply press the green power key. To power off, press and hold the power key for 1.5 seconds.
Menu Functions
The ProDSS has a menu-based interface. Press the “hot keys” to access the System ,
Probe ,
Calibration , and File menus (from left to right at the top of the keypad). To navigate through
the menus, use the up ▲and down ▼arrow keys to highlight a desired menu option with the
highlight bar, and press the Enter key to activate the selection. Use the left arrow ◄key to go back
one screen. Press the Esc key to return to the run screen or to exit an alpha/numeric entry screen.
The Run screen will appear when powering on the instrument.
Setting the Date and Time
1. Press the System key.
2. Highlight
Date/Time
and press the Enter key.
3. Highlight
Date Format
and press the Enter key. Select the desired time format, press the Enter
key, and press the left arrow ◄key.
4. Highlight
Date
and press the Enter key. Use the keypad to enter the correct date, highlight
ENTER
on the display, and press the Enter key.
5. Highlight
Time Format
and press the Enter key. Highlight the correct format, press the Enter key,
and press the left arrow ◄key.
6. Highlight
Time
and press the Enter key. Use the keypad to enter the correct time, highlight
ENTER
on the display, and press the Enter key
7. Press Esc to return to the Run screen.
Installing Sensors and Connecting Cable
Install sensors in a 4 port ProDSS cable by referencing the ProDSS Sensor Installation sheet included
with each new sensor. ProDSS ODO/CT, ProODO, and ProOBOD cables feature integral (built-in) sensors.
1. Inspect the sensor port for contamination. If dirty or wet, clean with compressed air.
2. Apply a thin layer of o-ring lubricant to the sensor o-rings.
3. Align the connectors and push the sensor in towards the bulkhead until you feel the sensor firmly
seat in its port. The bulkhead ports are not sensor-specific, allowing for installation of any ProDSS
sensor into any open sensor port.
4. Once seated, finger-tighten the titanium sensor nut by hand. DO NOT continue to tighten if cross
threading is suspected.
5. Tighten with the sensor installation/removal tool until snug. Approximately ¼ to ½ turn may be
needed. DO NOT over tighten.
ProDSS Quick Start Guide

6. Install a port plug in any unused sensor port.
7. Align the keys on the cable connector with the slots on the instrument connector. Push together
and twist to lock into place.
Installing Sensor Guard and Calibration Cup
Install the calibration cup when storing or calibrating sensors. ProDSS weight(s) should not be installed
on the sensor guard when the calibration cup is used.
1. Place the sensor guard over the sensors and attach to the bulkhead.
2. Ensure the calibration cup gasket is correctly seated in the plastic retaining nut (4 port cables).
3. Loosely install the retaining nut on the calibration cup and slide the cup over the sensor guard.
4. Tighten the retaining nut to clamp/seal the cup onto the guard.
Sensor Setup
ProDSS sensors are automatically recognized by the instrument, eliminating the need to enable each
sensor under the Sensor Setup menu. However, some sensor specific settings (e.g. pH automatic buffer
recognition mode) can be set in the Sensor Setup menu, found by pressing the Probe key.
Setting Displayed Measurement Units
Measurement units that appear on the Run screen for each sensor can be selected under the Sensor
Display menu. The units chosen to be displayed will also appear on the data logging file. To set
displayed measurement units:
1. Press the Probe key.
2. Highlight
Display
and press the Enter key.
3. Highlight the sensor of interest and press the Enter key.
4. Select the units you would like to display on the Run screen by using the Enter key. Check boxes
indicate that more than one measurement unit can be displayed for the sensor (e.g. Nitrate can be
displayed as NO3-N mg/L and NO3mV). Circles indicate that only one measurement unit can be
displayed for the sensor (e.g. temperature can’t be displayed as °C and °F).
5. Press the left ◄arrow key to return to the previous screen or press Esc to return to the Run screen.
Barometer Calibration
The barometer has been calibrated before shipment. We suggest you check the barometer by following
step one below. If the instrument displays the correct reading, no further action is required. If incorrect,
please continue with step two below.
1. Determine your local barometric pressure (BP) in mmHg from a mercury barometer, an
independent laboratory, or from a local weather service. If the BP reading has been corrected to
sea level, use the following equation to determine the true BP in mmHg for your altitude:
True BP = (Corrected BP in mmHg) – {2.5 * (Local Altitude in feet/100)}
2. Press the Cal key.
3. Highlight
Barometer
and press the Enter key.
4. Highlight
Calibration Value
and press the Enter key to adjust.
5. Use the Alpha/Numeric screen to enter True BP, then highlight
ENTER
and press the Enter key.
6. Highlight
Accept Calibration
and press the Enter key
to finish the calibration.
Depth Calibration
When calibrating the depth sensor, ensure that the sensor is clean and in air. Keep the bulkhead still
while calibrating.
1. Press the Cal key, highlight
Depth,
and press the Enter key.

2. Allow the readings to stabilize by observing the graph on the measurement screen.
3. Once stable, highlight
Accept Calibration
and press the Enter key to calibrate.
Optical Dissolved Oxygen (ODO) Calibration
The ProDSS offers three options for calibrating dissolved oxygen. The first is an air calibration method in
DO % saturation. The second, calibration in mg/L, can be completed using a solution with a known DO
concentration (usually determined by a Winkler Titration). Calibration in either DO % or mg/L will
automatically calibrate the other. The third option is a zero calibration, commonly completed in a
sodium sulfite solution. You must perform a DO % calibration following a zero calibration. For ease of
use and accuracy, YSI recommends performing the following 1-point DO % calibration:
1. With a clean sensor guard attached, place a small amount of water (1/8 inch) in the calibration cup
and slide the calibration cup over the sensor guard. Tighten the calibration cup retaining nut, but
disengage a thread or two to ensure atmospheric venting.
Make sure the DO and temperature
sensors are not immersed in the water and there are no water droplets on the sensors.
2. Wait approximately 5 to 10 minutes for the air in the calibration cup to become saturated.
3. Press the Cal
key, highlight
ODO
, and press
the Enter key.
4. Highlight
DO %
, then press
the Enter key.
5. Verify the barometric pressure displayed is accurate. Once DO % and temperature are stable,
highlight
Accept Calibration
and press the Enter key.
pH, ORP, ISE, Conductivity, and Turbidity Calibration
Please consult the ProDSS User Manual for additional calibration procedure details.
1. Ensure the equipment used for calibration is clean and rinsed.
Note: The sensor guard and calibration cup are required for turbidity. Other containers (e.g. beaker)
can be used for pH, ORP, ISE, and conductivity calibrations as long as care is used to protect the
sensors from damage.
2. Fill the calibration container with enough fresh standard to cover the temperature sensor and the
sensing end of the sensor to be calibrated. Completely submerge the top vent hole when
calibrating the conductivity sensor.
Note: When the 4 port calibration cup is empty (i.e. no sensors or sensor guard in the cup, as these
would displace the calibration solution), fill to the first line (~ 170 mL) for pH, ORP, NH4+, NO3-, Cl-,
and turbidity calibration. Fill to the second (i.e. top) line (~225 mL) for conductivity calibration.
After filling the container, place the sensors and sensor guard in solution. For ODO/CT cables, ensure
the solution level is at least 1/2 inch higher than the vent holes at the top of the conductivity sensor.
Note: The first calibration point for turbidity must be 0 FNU. DI or distilled water can be used.
3. Press the Cal
key.
4. Highlight the parameter you wish to calibrate and press the Enter key.
For Conductivity, a second
menu will offer the option of calibrating
Specific Conductance
,
Conductivity
, or
Salinity
.
Calibrating one automatically calibrates the other two. Specific conductance is recommended.
5. Enter the calibration solution value by highlighting
Calibration Value
, pressing the Enter key, and
then using the alpha/numeric keypad to enter the known value for the standard. Calibration values
for pH and ORP are automatically adjusted by the instrument. Once you have entered the value of
the calibration standard (if needed), highlight
ENTER
and press the Enter key.
6. Allow the readings to stabilize by observing the white line on the graph located at the bottom of
the calibration screen. Ensure temperature readings are also stable. Once measurements are
stable, highlight
Accept Calibration
and press the Enter key to calibrate.
7. For pH, ISEs, and turbidity, continue with the next point by placing the sensor in a second standard
solution and following the procedure previously described. To complete the calibration, highlight
Finish Calibration
and press the Enter key. Up to 3 calibration points can be completed for these
sensors.

Logging and Viewing Data
The ProDSS features two methods of logging data. Only one data point will be saved at a time when
using
Single
point logging, while the instrument will log multiple data points at user-defined intervals
with
Continuous
logging. To set the method and log data:
1. Press the System key. Use the arrow keys to highlight
Logging
and press the Enter key. For
continuous logging, enable
Continuous Mode
and adjust the time interval. To enable
Single
point logging, simply disable
Continuous Mode
.
2. Once the logging method is set, return to the Run screen using the Esc key.
3. To log data, press the Enter key.
4. To stop
Continuous
logging, simply press the Enter key again.
There are two different methods of displaying data on the Run screen. With
Auto Sampling
, the
measurements on the Run screen are continuously updated. With
Manual Sampling
, measurements
are updated on the display for the duration of the sampling period (user-defined), and then locked.
Once locked, press Enter to log data. Esc followed by Enter will cause the sampling period to reset.
These methods can be set by pressing the System key and adjusting the sampling mode.
Data can be “tagged” on the ProDSS using two different descriptors,
Site
and
Data ID
.
Site
contains GPS
information connected with a site while
Data ID
is a method of tagging the data (e.g. project number or
day of the week). Press the System key to add/modify these options under the logging menu.
When taking measurements, insert the sensor into the sample and briefly move the sensor up and down
to release any air bubbles. Continuous sensor movement is not required. Allow measurements to
stabilize and press the Enter key to log data. Press the File key to view, delete, or backup logged data or
the GLP file. Data can be filtered by date/time and by user-created site and data ID.
Uploading Data to KorDSS
The ProDSS User Manual, located on the USB flash drive provided with the instrument, provides
thorough instructions on installing KorDSS and the USB driver for the ProDSS. The HTML help file,
located under the File tab of KorDSS, provides a more complete description of KorDSS features.
1. Install the KorDSS software from the USB flash drive included with the instrument.
2. Use the USB cable to connect the instrument to the PC.
3. Install the ProDSS instrument driver. The driver is partially installed during the KorDSS install
process. The driver installation procedure may occur automatically, but if you do not see a message
indicating successful install of the driver, please follow the driver install instructions in the manual.
4. Open KorDSS on the PC and complete the KorDSS Startup Wizard.
5. Choose the desired instrument in KorDSS under the
Instrument Connection Panel
. Once you’ve
highlighted the correct instrument, click
Connect.
6. Download data from the instrument by clicking
Start Download from Device
, also under the
Instrument Connection Panel
.
7. After data download, the data is available for viewing, printing, and exporting from KorDSS.
8. Press the File key and choose
Delete Data
if you no longer need the data on the ProDSS.
Contact Information
YSI
1725 Brannum Lane
Yellow Springs, OH 45387
Tel: [phone] (937-767-7241)
E-Mail: [e-mail]
Item # 626972
Drawing # 626972
Revision B
July 2016
Website: YSI.com