YSI ProODO - Manual (Page 7)

4 5
InItIal setup
Throughout the manual, the term “probe” refers to the end of the cable where
the sensor is located, the term “sensor” refers to the Optical Dissolved Oxygen
sensing portion of the cable/probe assembly, and the term “sensor cap” refers to
the removable sensing cap that is replaced about once per year (Figure 3).
Figure 3
UNPACKING THE ODO PROBE
Each ProODO cable/probe assembly and replacement ODO
sensor cap includes an instruction sheet with important
information unique and specific to each individual sensing cap.
Remove the cable/probe assembly from the shipping container and locate
the instruction sheet included with your assembly. This instruction sheet is
important because it includes the calibration coefficients for your sensor cap.
After using this sheet for general probe setup, be sure to store it in a safe place in
case you need to reload these calibration coefficients in the unlikely event that
they are ever deleted from the probe.
Note - A new cable/probe assembly already has a
sensor cap installed and the sensor cap coefficients
are preloaded into the probe at the factory.
Preparing the probe for the first time:
Remove the metal probe guard from the probe by turning it 1.
counterclockwise.
Remove the red storage cap which contains a moist sponge from the end of 2.
the probe by pulling it straight off the sensor. Save this to use later for long
term storage.
Sensor
Probe
Sensor Cap
i
i
Reinstall the probe guard by sliding it carefully over the sensor and then 3.
threading it onto the cable/probe assembly with a clockwise rotation (Figure
4).
Locate the grey calibration/storage sleeve that was shipped with your probe/ 4.
cable assembly. Moisten the sponge in the grey calibration/storage with a
small amount of clean water.
Slide the calibration/storage sleeve over the probe guard to keep the probe 5.
in a moist atmosphere for storage or calibration (Figure 5). It is important
to always keep your sensor in a moist environment so the sensor cap does
not dry out. (See Care, Maintenance, and Storage for more information.)
Figure 4 Figure 5
CONNECTING THE PROBE/CABLE ASSEMBLY TO THE
INSTRUMENT
To connect the cable, align the keys on the cable connector to the slots on the
instrument connector. Push together firmly, then twist the outer ring until it
locks into place (Figure 6). This MS-8 (Military Spec) connection is water-
proof.
Figure 6. Note the keyed connector. The cable and instrument
connectors can only be mated once the keyed sections are properly
aligned. When disconnected, the cable connector and the
connector on the instrument maintain an IP-67 rating.