2
3
oxygen levels, and the elimination of frequent membrane/electrolyte
changes and electrode servicing.
For more information on the ProODO and MultiLab IDS instruments,
including product specification, please visit ysi.com or contact YSI
Technical Support at 800-897-4151 (+1 937-767-7241), environmental@
ysi.com.
Reading the entire manual before use is recommended for an overall
understanding of the probe’s features.
Important: The OBOD probes are designed for laboratory use,
not field use. They are not waterproof and should never be
immersed in a sample past the taper on the stem of the probe.
G E T T I N G S T A R T E D
Throughout the manual, the term “probe” refers to the end of the cable
where the sensor, stir motor and stirrer are located. The term “sensor”
refers to the Optical Dissolved Oxygen sensing portion of the probe
assembly and the term “sensor cap” refers to the removable sensing
cap that is replaced about once every 12 to 18 months (Figure 1).
Figure 1
Stirrer toggle switch, turns
stir paddle on and off
Probe
Temperature sensor
Optical DO sensor
OBOD Sensor Cap,
shown here removed
from probe
Stir paddle
Unpacking the OBOD prOBe
Each OBOD probe and replacement OBOD sensor cap
includes an instruction sheet with important information
unique and specific to each individual cap.
Carefully unpack the instrument and accessories and inspect for
damage. Compare received parts with items on the packing list. If
any parts or materials are damaged or missing, contact YSI Customer
Service at 800-897-4151 (+1 937 767-7241) or [email protected]
or contact the authorized YSI distributor where the instrument was
purchased.
Remove the OBOD probe/cable assembly from the shipping container
and locate the instruction sheet that is included. This instruction sheet
is important because it contains the calibration coefficients for your
sensor cap. A new probe/cable assembly already has a sensor cap
installed and the sensor cap coefficients are preloaded into the probe
at the factory. The coefficients are automatically sent to the instrument
when the probe is connected to the instrument. however, the probe
instruction sheet should be saved in case you need to reference the
coefficients in the future.
Preparing the probe for the first time:
1. A new OBOD probe will have a protective cover with a moist
sponge placed over the sensor cap to ensure the cap remains
hydrated during shipment. Carefully remove this cover from the
end of the probe by pulling it straight off the sensor. Save the cover
along with the sponge to use later for long term storage of the
probe. Long term storage is generally considered to be 4 weeks
or longer.
2. Place the probe in a standard BOD bottle that contains a small
amount of clean water (approximately 40 ml). The sensor should
not be immersed in water but rather in the air above the water.
The purpose is to create a 100% water-saturated air environment
for the sensor which is ideal for calibration and storage when not
in use.
It is important to always keep your sensor in a moist
environment so the sensor cap does not dry out. (See
Maintenance and Storage for more information.)
i